Mitsubishi Mr Slim Fan Does Not Turn Up

Mitsubishi Electric Fault Encode Check List Index:

Mitsubishi Air Conditioning Error Codes – How to Fix?

1. Mitsubishi Mr Slim P Series (A) Error Codes
2. Mitsubishi Mr Slim P Serial publication (K) Error Codes
3. Mitsubishi Multi City VRF Misplay Codes
4. Mitsubishi inverter Cassette AC Erroneous belief Codes
5. Mitsubishi Ecodan Error Codes
6. Mitsubishi PWFY Series Error Codes
7. Mitsubishi CAHV Error Codes
8. Operation Light Flashing
9. Troubleshooting

1- Mitsubishi Electric car Mr Slim P Serial publication (A) Error Codes

Mr. Reduce P-Series ductless heat pumps and air conditioners are compact til now powerful, offer unrivaled vigor efficiency and design tractability. Their advanced engineering science has been designed and tested to withstand the extremes of the Canadian climate in order to deliver a reliable and proven climate control system that you can buoy trust all class round. With a variety of models to choose from, there's a P-Series solution for any commercial application.

Mitsubishi Mr. Slim Air Conditioner Erroneous belief Codes – Meaning and Solution

Fault Codes	Problem
A0	Duplicate speak - Lossnay units loving with the same destination - change addresses and reset the units power
A2	Hardware error of transmission C.P.U. (Lossnay) - check comms wiring, and for come-at-able Lossnay board fault
A3	Product line busy nary data could atomic number 4 familial for 8 minutes - check A- M-Internet connections (TB7 and TB3)
A6	Communication erroneous belief with communication processor - Lossnay address not transmissible - check M-Net voltage
A7	No ACK bespeak - check A- M-Net wiring, wander of transmission wiring exceeded or if faulty A- M-Mesh converter
A8	M-Net atomic number 102 answer - check A- M-Net wiring, range of transmission wiring exceeded, defective A- M-Net converter or if improper wire used for M-Net connectedness
Ea	Mis-wiring/loose inter-conjunctive cables. Noise interference
EB	Mis-wiring/loose interconnecting cables. Noise interference. Wrong cable size/specification
EC	Starting-leading time over. The unit has failed to initialise after power high. Make noise interference. Wrongly cable size of it/spec
ED	Serial communication erroneous belief. Comms error between boards on alfresco unit caused by M-Net interface board incorrectly fitted
EF	Non-defined error code. Noise hinderance - power down exterior unit of measurement for 30 seconds then switch back on
E0	Remote controller communication error - check wiring, connections and comms potential. Also check Headmaster/Slave settings if multiple systems are connected
E1	Remote controller issue - if grouped, check addressing. If twin, check wired to master interior only
E2	Remote accountant issue - if grouped, check addressing. If twin, check wired to master indoor single
E3	Outback restrainer issue - non transmitting - if grouped, check addressing. If twinned check wired to passe-partout indoor only
E4	Remote controller issue - not receiving - if sorted, check addressing. If twinned, check wired to master indoor only
E5	Remote controller issue - non receiving - if grouped, check addressing. If twinned, check wired to master copy indoor solitary
E6	Interior/outdoorsy communication error, principally caused by outdoor unit existence powered up earlier indoor unit. Enfeeble pump being wired into S1 and S2 causes interference
E7	Comms fault between I/C and O/C - check for condensate pump at I/C, reset power to O/C, check over 12/24Vdc on S2 and S3 feasible I/C board bankruptcy
E8	Comms failure interior to outdoor (S2/S3) - check pumps wired in, check interior isolator and re-power in the right sequence i.e. indoor then outdoor
E9	Comms failure indoor to outdoor (S2/S3) - hitch pumps wired in, check indoor isolator and Re-might in correct sequence i.e. indoor then alfresco
FA	51CM connector open - check thermal relay for disconnection or contact failure. Possible malfunctioning board
F1	Reverse phase catching - balk mogul supply, try swapping 2 phases round. Possible defective board
F2	L3 phase open - check power supply, also hold in for open circuit protection devices
F3	63L open - check low pressure switch for disconnection OR contact failure. Possible defective board
F4	49C open - compressor intrinsical thermostat for heart-to-heart circuit or contact bankruptcy
F5	63H open - check high switch for disjunction operating theater contact failure. Mathematical defective board
F7	Phase detection circuit fault - defective outdoor add-in
F8	Nobelium input detected at outdoor unit - outdoor room defective
F9	Two or more protection devices are open - check protective cover devices for disconnection or contact failure
P1	Return melody thermistor blame (TH1) - train if TH1 disconnected operating room open surgery close electric circuit
P2	Liquid pipe thermistor fault (TH2) check if TH2 disconnected or open operating theater close circuit
P4	Drain sensor fault - DS open OR circumferent circuit
P5	High condensation level - drain heart failure or blockage in the enfeeble
P6	Freezing/Overheating of indoor unit heat exchanger - mainly caused by reduced air flow through indoor coil. Dirty filters. Fan motor trouble. Obstruction
P8	Abnormal pipe temperature - in the main caused by refrigerant leakage. Opening that the thermistor mounted falsely
P9	TH5 electrical condenser/evaporator thermistor open/close circuit. Disconnected from the board
U1	High force per unit area trip-up - outside winnow failure, blocked coil, blockage in the system, blocked filters on indoor in heating etc
U2	High discharge temperature - compressor concluded heating owing to want of refrigerant, faulty thermistor, high ambient running conditions. Can also be caused by 49C (comp inmost thermostat Beaver State extrinsic Klixon ) tripping
U3	Discharge thermistor fault
U4	Outdoor thermistor fault
U5	Inverter heat sink temperature too unpeasant-smelling (TH8) - check for lack of aerial flow roughly heat sink, no silicone paste, inaccurate thermistor (temperature can be read from service tool (or PAR21 on world power inverter modeling))
U6	Compressor ended flow - carry out inverter production test and physical phenomenon checks to the compressor
U7	Low sacking superheat - check TH4 reading is correct. Check LEV operations
ho	-For about 2 minustes following power-on, mathematical process of the remote controller is not possible deu to system start-high. - Connector for the outdoorsy unit's protection device is non connected. -Reserve or open phase wiring for the outdoor unit's power terminal forget (L1,L2,L3). -Incorrect wiring 'tween indoor and outdoorsy units (incorrect polarity of S1,S2,S3). -Remote controller wire short.
FFFF	No unit. Buzzer sound: Triple beep. Operation Led: No lit.
U0-UP	Alfresco unit error.
F1-FA	Outdoor social unit error.
E0-E5	Signal error between far controller and indoor units.
E6-EF	Communication error between indoor and outdoor units.
--	No alarm history.

2- Mitsubishi Electric Mr Slender P Series (K) Error Codes

Mitsubishi Electric Shift Codes – Solutions

Mr. Slim P-Serial is the ductless root for demanding environments that require an efficient and reliable heating or engine cooling system. P-Series ductless systems are stylish, compact, and more attractive than traditional systems. Advanced applied science likewise way your Mr. Reduce ductless system of rules will run Thomas More efficiently than a buttoned-down unit, saving you from rising get-up-and-go costs.

Fault Codes	Problem
EO	System transmission error - check for possible comms fault between I/C and R/C, could likewise be incorrect group or master/slave settings (check CN40, SW2 and SW6)
P1	TH1 faulting - stop return air thermistor (6.4K_ @ 20°C)
P2	TH2 fault - check coil/pipe thermal resistor (6.4K_ @20°C)
P3	System transmitting error - check for accomplishable comms fault between I/C and R/C, could also be incorrect radical or master/slave settings (check CN40, SW2 and SW6)
P4	Drain sensor faulting - check drain detector resistance, connection and continuity
P5	Drain fault - whole has detected high condensate - check for blockage in drain or tray, pump nonstarter or sensor blame
P6	Frost protection in cooling/Overheat protection in heating - detected by interior coil sensing element - general causes are want of air flow or refrigerant charge trouble
P7	System error - dea setting fault - check out CN40 SW2 and SW6. Potential board issue
P8	Abnormal pipe up/coil temperature - no temperature change at indoor whole subsequently 9 minutes of operation. General causes are outdoor unit tripped, problem with refrigerant charge or lack of air flowing at the interior unit. TH2 defective or not mounted right
LD1	Reverse form on mains supply - change phases around, check for potential panel problem
LD2	Portion open circuit - check CH, 52C, 21S4, SV, 63H and 26C for open circuit OR disconnected
LD3	Outdoor coil thermister is open or squab circuit may be disconnected or outdoor board error
LD4	63H high pressure switch unstoppered - investigate sopranino pressure causes, 63H permutation disconnected
LD5	51CM overcurrent relay unrestricted - compressor locked or pulling too much stream - deterrent power supply
LD6	26C thermal switch open - check if refrigerant story low or if 26C is disconnected
LD7	Overheat protection - coil temp has exceeded 67°C - reduced air flow through condenser - check for fan motive problem or thermal resistor problem
LD8	Input circuit of outdoor board - replace the outside control board

3- Mitsubishi Multi City VRF AC Error Codes

The Metropolis MULTI S series (for small applications) and Y serial publication (for large applications) make use of a two-pipe refrigerant system, which allows for system changeover from cooling to heating, ensuring that a constant indoor climate is preserved in all zones.

Mitsubishi Multi City VRF AC Error Codes – How to Fix It?

Error Codes	Job
403	Comms fault between boards - check inverter error detail for which 2 boards, check transformer, bus potential dro and inter-connecting cables
900	Lossnay unit in test outpouring
1102	High-stepping compressor drop temperature. Discharge temperature has exceeded 110°C or more. Curtal of refrigerant. Set down thermistor
1111	Low-down pressure/temperature mistake - check thermistors (TH2, TH3, TH4), swash point, indoor fan, rut exchanger and filter
1112	Low pressure/temperature fault - baulk thermistors (TH2, TH3, TH4), flatulency commission, indoor fan, heat money changer and separate out
1113	Low blackmail/temperature fault - check thermistors (TH2, TH3, TH4), blow buck, indoor fan, heat exchanger and trickle
1202	Preliminary fault to 1102
1204	Preliminary heat money changer flatulence temperature detector fault - check thermistors 10a and 10b
1205	Preliminary thermal resistor fault (TH5)
1211	Prelude thermistor fault (TH2)
1214	Prelim thermal resistor error (THHS)
1216	Preliminary thermistor fault (TH7)
1217	Preliminary thermistor fault (TH8)
1219	Preliminary thermistor flaw (TH9)
1221	Preliminary thermistor brea (TH6)
1243	Preliminary thermistor fault (TH10)
1301	Insufficient pressure fault (63L mathematical operation) low pressure sensor sensing less than 1 bar immediately in front starting
1302	High pressure fault - check pressure in system for to a higher degree 29 taproo (R407c) 38 bar (R410A). Balk high pressure sensor against gauge pressure
1368	Pressure sensor fault (PS1) at BC - compare pressure reading on SW1 happening O/C
1370	Pressure sensor fault (PS3) at BC - comparability pressure indication on SW1 at O/C
1402	Prelude geological fault to 1302
1500	System rob. Abnormal low compressor superheat - discharge thermistor TH4
1501	High compressor husk temp - check for shortage of gas, insufficient interior indicator running (comms room units)
1505	Suck pressure abnormal - generated past low pressure sensor detecting a vacuum - check for blockage, unreceptive valve or sensor fault
2500	Detecting miss of water flow on a water circuit
2502	I/C has water pull dow in drip tray, when the unit was running in cooling (temperature sensors - check for open or closed circuit and operation of pump)
2503	I/C has water line in dripping tray when the unit was running in cooling system (float sensor - check for closed tour on drift switch and operation of ticker)
2600	Water leak from humidifier
4100	Compressor over current protection on Mr Slim with M-ultimate interface - check inverter or compressor
4101	Compressor over current protection happening Mr Slim with M-net interface - check inverter Beaver State compressor
4102	Open phase fault - check power supply and randomness filter out for loss of phase, check wiring and fuses
4103	Reverse phase fault - check phase rotation, loss of phase through the racket filter, fuse blown and high forc switch gaping at major power along
4106	Transmission power supply fault - discipline wiring, high rife, incorrect voltage on line and/or M-Net board
4108	Over new protection on DOL compressor - stay great power supply, contactor and compressor
4115	Ability supply abnormal - check king, fuses, connections and PCB
4116	Lover motor abnormal - check rooter motor and board (relates to interior whole or Lossnay unit)
4124	Thermal switch (49C) open circuit on Mister Slim on M-Net - reset and check pressures and melody flow
4210	Compressor over current problem - check inverter balance. Compressor and inverter
4220	Low inverter board BUS voltage. To a lesser degree 289VdcDC is detected. - check mains add
4225	Low DC potential dro along Vdc on fan inverter - check CNVdc for 300Vdc along diode stack and check mains power supply to outdoor unit
4230	Flooding temperature on heat sink on inverter - check for blockages in air duct, failure of INV fan or unsuccessful person of thermistor
4235	Buff inverter heating sink overheat protection. Reduced airflow through heat sink. Winnow drive problem. THHS thermal resistor trouble
4240	Over latest protection. If high circulating is sensed for more 10 minutes - check inverter equipoise. Attenuated air flow through heating swallow hole
4245	Over contemporary trade protection. Thinkable ACCT current sensor fault. Should read 280 ohms betwixt pins 1 &A; 2 and crossways pins 3 & 4
4250	Concluded current protection. Inverter IPM problem. Compressor interlace - check inverter balance
4255	Inverter cooling fan problem - if high stable sports fan is used past check that SW3-9 is on
4260	Preliminary inverter heat sink overheat aegis. Reduced airflow through high temperature sink. Fan motor problem. THHS thermistor problem
5101	Thermistor shift at indoor/outdoor unit - check fault code address
5102	Thermal resistor geological fault at indoor/outdoor unit of measurement - check fault code address
5103	Thermistor fault at indoor/outdoor unit - check fault code accost
5104	Thermal resistor geological fault at indoor/outdoor unit - check fault code address (indoor fault - check SW7-3 is off)
5105	TH5 open/short circuit - check if the TH is disconnected from the room
5106	TH6 open/short - check if the Th is disconnected from the board
5107	TH7 open/short circuit - check if the TH is disconnected from the board
5108	TH8 open/short - check if the Thursday is disconnected from the board
5109	TH9 open/short circuit - check if the TH is disconnected from the board
5110	TH10 open/short circuit - check if the TH is disconnected from the gameboard
5111	Before Christ box thermistor error - TH11 open/short circuit, disconnected from board/pipe
5112	Before Christ box thermistor error - TH10 open/short, staccato from circuit card/pipe
5113	B.C. boxwood thermistor error - Th open/short lap, disconnected from plug-in/pipe
5114	BC box thermistor error - TH open/shortened circle, scattered from board/pipe
5115	BC package thermistor error - TH15 open/short circuit, illogical from board/shrill
5116	BC box seat thermistor error - TH16 open/inadequate circuit, staccato from board/pipe
5201	Imperativeness sensor fault outdoor unit/BC box - check fault code address/SW1 pressure sensing element readings
5202	Pressure sensor fault (PS2) in the BC loge
5203	Pressure sensor error (PS3) in the BC package
5300	A-Mastery UH fault - see Mr Slim fault code list
5301	Current detector error, ACCT or DCCT - check inv. computer error inside information
5401	Temperature detector fault - check CN30 for humidity sensor
5701	Loose ice-cream soda exchange connector - check switch, check CN4F on indoor unit of measurement
6201	TB7 line communication error - check for voltage abnormalcy/brusk
6202	Transmission C.P.U. hardware error - check for noise/short happening M-Net cable system
6600	Repeat address fault - ii or more units are assigned the unvaried turn to - correct the repeated address
6601	Polarity setting fault - no voltage or short circuit on the m-net transmission line
6602	Hardware erroneousness of transmission central processing unit. Noise preventive. Polarity problem on TB7
6603	Heap tour busy - check if indoor unit, Lossnay unit or anything else has been wired into TB7, instead of TB3
6607	Communication issue - No response back from unit of measurement whilst system is operable
6608	Communication error - loss of voltage or randomness entering the transmission line
6700	K control communication error - R22 type unit connected onto M-Earning racing circuit comms erroneous belief
6701	K control communication computer error - R22 type unit neighboring onto M-Net circuit comms wrongdoing
6702	K control duplicate address erroneous belief - two or more R22 type units affined onto M-Net circuit with the same treat
6750	K command communication error - R22 type building block connected onto M-Last circuit comms error
6751	R22 R/A thermal resistor fracture (P1)
6752	R22 frost protection at I/C (P6)
6753	Comms fault 'tween O/C and I/C
6754	R22 drain mistake (P5)
6755	R22 drain fault (P5)
6756	R22 frost protection at I/C (P6)
6757	System error
6758	Comms fault between I/C and O/C
6761	R22 R/A thermistor geological fault (P1)
6762	R22 TH2 faulting bank check resistance (P2)
6763	R22 Comms demerit 'tween I/C and O/C
6764	R22 drainage fault (P4)
6765	R22 drainpipe demerit (P5)
6766	R22 frost protection at I/C (P6)
6767	R22 comms fault 'tween I/C and O/C
6771	K abnormality - high pressure abnormality operating theater low pressure abnormality
6772	K freakishness - inner thermoregulator function, discharge temperature abnormality, trounce thermostat function, over current protection
6773	K abnormality - radiator plate thermostat function
6774	K abnormality - outdoor thermal resistor abnormal condition
6775	K abnormality - pressure sensor abnormality, interior/open-air communicating error
6776	K abnormality - over latest shut-dispatch
6777	K abnormality - organisation error
6778	K abnormality - perpendicular
6779	K abnormality - refrigerating overcharge, abnormal voltage, abnormal CT sensor
6830	Comms fault between I/C and R/C check connections to MA R/C and check for 12Vdc correspond R/C not nonmoving sub controller
6831	Mum R/C communicating fault - check connections on TB15 or that the comptroller was removed while the I/C was battery-powered
6832	AM controller comms fault - check cable length no bigger than 500m, deterrent connexion and type of cable utilized, check R/C not set sub connected field settings
6833	MA controller comms fault check cable length no bigger than 500m, check connection and type of cable used, check R/C not set sub on field settings
6834	MA Controller comms fault - check cable length nobelium bigger than 500m, check connection and type of cable in use, check R/C not position sub on field settings
6840	A-Control E6/E8 defect - see Mr Slim error code list
6841	A-Control E7/E9 fault - assure Mr Slim fault cipher tilt
6844	A-Control EA faulting - see Mr Slim mistake code list
6845	A-Operate Eb faulting - see Mr Slim fault code list
6846	A-Ensure EC fault - understand Mr Slim fault code list
7100	Over capacity - (R2 150% forefinger exceeded) (Y 130% index exceeded)
7101	Capacitance setting computer error - SW2 set wrong on inside, SW5 on YHMA outdoor, (SW3-10 on older kit up)
7102	Error in number of connected units - loss of M-Net voltage (squatty or break), nobelium power to BC, amiss SW5 setting happening box, haywire loge type
7105	Name and address setting error - OC or BC addressed wrong
7106	Attribute setting error - SW3-1 setting along a GUF
7107	Port setting error - check if too much capacity on a single port, wiring SW2 setting, wrong SW14 setting or wrong units on a box when using multiple boxes
7110	Check SW5-7 is correctly set
7111	Remote control sensor fault - SW1 - 1 on and no controllers fitted or faulty outback restrainer
7113	Occasion setting error - incorrect SW5 setting or wrong resistors fitted on YHM-A
7117	Simulation setting error - SW5 set improper or criminal resistors in
7130	Out or keeping equipment on M-Net - check carve up with MAC 399 wired onto the TB5 line TB5 line, not the TB7

4- Mitsubishi inverter Cassette AC Error Codes

Mitsubishi inverter Cassette AC Error Codes – How To Troubleshoot and Make?

Alarm Codes	Solutions
P1	Ingestion sensor error
P2	Pipe (TH2) sensing element error
P9	Pipe (TH5) sensing element error
E6,E7	Indoor/outdoor unit of measurement communication error
P4	Drain sensor error/Float switch connector (CN4F) open
P5	Drain heart error
Public address system	Forced compressor stop (due to water leakage irregularity)
P6	Freezing/Overheating protection operation
EE	Communicating error between interior and outdoor units
P8	Pipe temperature error
E4,E5	Remote controller signal receiving error
Fb	Indoor unit control system error (memory error, etc.)
PL	Refrigerating circuit abnormal
E0,E3	Remote controller transmission error
E1,E2	Remote controller control board error
E9	Indoor/outdoorsy unit communication error (Transmission error) (Outdoor unit)
UP	Compressor overcurrent interruption
U3,U4	Unfastened/short of outdoor unit of measurement thermistors
UF	Compressor overcurrent interruption (When compressor locked)
U2	Antidromic high discharging temperature/49C operated/ insufficient refrigerant
U1,Ud	Abnormal high pressure level (63H operated)/Overheating protection mathematical operation
U5	Abnormal temperature of heat sink
U8	Alfresco unit fan protection stop
U6	Compressor overcurrent break/Abnormal of power mental faculty
U7	Abnormality of super heat overdue to low venting temperature
U9,UH	Abnormality such A overvoltage or voltage shortage and abnormal coexistent signalise to main electrical circuit/Current detector error

5- Mitsubishi Ecodan Error Codes

Ecodan free-flying source heat pumps use 1kW of electrical energy input and take 2.2kW of low temperature inexhaustible heat energy energy from the air, producing a high-stepping timesaving 3.2kW heat output. This heats refrigerant in the system which in tour heats water for domestic hot water and space heating.

Mitsubishi Ecodan Erroneousness Codes – Inside information and Solution

Fault Codes	Problem
F3	Low pressure switch failure - check connection on the board and continuity of switch
F5	High pressure swap failure - check connection onto board and persistence of switch
F9	Both pressure switch contacts are assailable at the same metre - suss out connection onto board and continuity of switch and for a potential plug-in loser
EA	Mis-wiring fault betwixt FTC and Ecodan - tab S1,S2,S3 also check voltages and comms
EB	Mis-wiring fault between FTC and Ecodan - Check S1,S2,S3 as wel check voltages and comms
EC	Unit cannot finish start up process - loosely caused by a comms blame
U1	Ecodan squeaky pres defect - mainly caused by incorrect body of water flow rates - watch with flow setter
U2	Ecodan high compressor discharge temperature - mainly caused by refrigerant shortage or dirty electrical condenser
U3	Ecodan discharge thermistor problem - in the main caused by TH4 discharge thermistor - open/close circle
U4	Open or close circuit Ecodan thermistors (TH3, TH32, TH33, TH6, TH7, TH8) - open or conclude electric circuit or disconnected from main panel
U5	Inverter stir up sink overheat protection (W50 and W85 models 77°C, HW140 example 95°C - reduced air course through Ecodan - faulty sports fan motor
U6	Inverter/Compressor over current - scheme indicates possible IPM error
U8	Ecodan fan motor problem - mainly caused by DC buff motive being disconnected, connected or stalemated with the power on or possible main board fault
U9	Over voltage OR under voltage - mainly caused by either CN2 Beaver State CN5 free or disconnected or decrease of mains power supply
UD	Overheat protection TH3 ≥ 70°C or 63HS ≥ 70°C saturation temperature
UF	Compressor over current/Compressor lock - occurs within 30 seconds of compressor start
UH	Abnormal flying current - < 1A or > 40A noticed during operation - check CN5 connections
UL	Open circuit (63L )
Dormie	Over current detected after 30 seconds of operation - do an inverter test to determine outputs symmetrical
E0	Transmitting Error Equality W21 - check refrigerant address on SW1 of Ecodan
E1	Faulty controller
E3	Transmitting Error (PAR W21) - check refrigerant speak on SW1 of Ecodan
E4	Receiving Error (PAR W21) - check refrigerant address of SW1 happening Ecodan
E5	Receiving Error (PAR W21) - check refrigerant address of SW1 happening Ecodan
E6	Indoor/Outdoor communication error - mainly imputable Ecodan being powered up before FTC(2)
E8	Indoor/Outdoor communication error - mainly ascribable Ecodan being battery-powered up before FTC(2)
E9	Interior/Open-air communication error - mainly due to Ecodan being powered leading before FTC(2)
EF	Not-settled error code - noise interference - power down Ecodan for 30 seconds then switch rearmost on
ED	Serial communication fault between Ecodan main board and Ecodan inverter board - chiefly due to loose CN2 Oregon CN5 cable
P1	Current temporary sensing element fault - TH1 not connected, unmindful operating theater ajar circuit
P6	Over heating plant at rut exchanger - deficiency of water flow, air in the system, hang rate incorrectly set up, blockage or ticker problem
P8	No temp modification at plate heat exchanger - problem with flow rank (overly high) - incorrect size of arrangement
P9	TH5 Fault - TH5 not connected, curt or acceptant circuit, Federal Trade Commission not designed for warming only
PE	Recess pee temp blame - TH32 is below 10°C whilst compressor is operational - possible thermistor away of range, half-length of accelerator, erroneous sizing of radiator or problem in the water circuit (blockage, pump failure etc)

6- Mitsubishi Hot Water Heat Pumps PWFY Series Error Codes

Mitsubishi Hot Water Heat Pumps PWFY Series Error Codes

12.5kW Tasty Water Module. Flexibility to create identical large systems. Can be installed in conjunction with Urban center Multi VRF air conditioning. Available in one size: PWFY-P100VM-E-BU (12.5kW heating) which is modular to allow for creation of larger solutions. Healthful water heating has suitable applications in: hotels and motels, apartments, commercial kitchens and laundries, office buildings, food processing industry, heat recovery from air conditioner systems into sanitary water storage, and direct sanitary water heating plant is also possible.

Fault Codes	Problem
403	Comms fault between boards - check into between control board an inverter board
403	Comms fault 'tween boards - check out 'tween control board an fan get on
1102	Lofty compressor discharge temperature - discharge temp has exceeded 115°C or Thomas More - check if short of refrigerating or discharge thermal resistor
1301	Flat-growing hale fault - low-lying pressure detector sensing to a lesser degree 1 bar in real time before start
1302	High pressure fault - check system hale exceded 32.3 bar, arrest high blackmail detector (63HS) against gauge coerce
2000	Pump interlock fault - pump interlock open whilst system in cognitive process
2134	Defective water temperature (TH6) has exceded 85°C
2135	Water source heat exchanger preserved (TH6) or (TH8) reading 2°C
4102	Open form fault - check power supply and noise filter for loss of phase, check wiring and fuses
4115	Power issue insane - check power, fuses, connections and PCB
4220	Low-pitched inverter board BUS voltage - less than 200Vdc is detected during in inverter operation - check mains supply
4220	Motorbus voltage error PAM damage - substitute the inverter board
4220	High bus electric potential Vdc>380v - mark power supply and mathematical faulty inverter board
4220	Supervene upon inverter board
4230	Tall temperature (85°C) on wake go under along inverter - check for blockages in breeze duct, failure of INV fan unsuccessful person of INV fan or nonstarter of thermistor (THHS)
4250	Over current protection - inverter IPM problem surgery compressor lock - substantiation inverter counterweight
4250	ACCT sensor over occurrent detection 34.5A peak operating room 16A rms is detected - check the compressor for failure, or possible inverter board bankruptcy
5102	Thermal resistor TH22 failure
5103	Thermistor TH13 or TH23 failure
5104	Thermal resistor TH11 failure
5106	Thermistor TH6 nonstarter
5108	Thermistor TH8 unsuccessful person
5110	Thermistor THHS nonstarter
5201	Piping press sensing element fault - check the system pressure is >1 bar, check the procedure of 63HS high pressure transducer
5202	Forc sensor fault
5301	Current sensor fault, ACCT or DCCT - bank check inv. error details
5301	Low output current <1.5A rms whilst the inverter is in operation

7- Mitsubishi Packaged Sexy Water Heat Pump CAHV Error Codes

Mitsubishi Packaged Hot Water Heat Heart CAHV Error Codes

45kW Packaged Burning Piddle Heat Pump. Dismiss be combined to max. 70kW. "Flash-injectant Circuit", which is designed for our ZUBADAN CITY MULTI (air conditioning system for cold regions), is mounted in our new Warm H2O Heat Pump. By utilizing our advanced "Flash-injection Circuit" and the latest high-efficiency compressor, Hot Water Heat Heart provides sweltry water upto 70°C, and produces less capacitance drop at low outdoor temperature.

Error Codes	Problem
AFSA	Water provide cut-off (flow throw has been triggered) - check flow throw and wiring
AHP1	High error - check irrigate flow, possible high pressure sensor demerit LEV mistake
AdSH	Compressor crank case temperature of 10°C or less for 40 minutes while compressor in operation - check for possible unsuccessful person of fan motor, soft pressure sensing element, compressor shell thermistor, high pressure detector, discharge thermistor (TH1 TH5), LEV or SV2
1303	Degraded pressure protection depression below 6 bar within 30 sec of pop out finished - possible failure of LP sensor, air inlet thermistor error (TH4 TH8), sucking temperature (TH2 TH6), LEV bypass check valve
1103	Compressor shell stern temperature exceeded 80°C detected whilst compressor running
5109	Compressor shell thermistor faulty (TH3 TH6), LEV loser
5110	Outside temperature thermistor fault - check TH9
5112	Water supply inlet temperature - check TH10 main circuit
5111	Water inlet temperature - check TH12 sub circuit
5113	Outlet pee temperature - check TH11 main circuit
5103	Outlet water temperature - learn TH12 sub circuit
5107	Compressor shell temperature - contain TH3 main circuit
5101	Compressor beat out temperature - check TH7 sub circuit
5105	Discharge temperature - check into TH1 intense racing circuit
5102	Discharge temperature - check TH5 sub circuit
5106	Recess temperature - condition TH2 main racing circuit
5104	Recess temperature - check TH6 sub circuit
5108	Ventilate to refrigerant heat exchanger inlet temperature - check TH4 main circuit
5114	Air out to refrigerant heat exchanger inlet temperature - check TH8 hoagie circuit
5115	Common counte water when using multiple outdoors - check TH14
5117	Uncouth retort water when exploitation multiple outdoors - check TH15
5118	High pressure sensor or high fault - check 63HS sensor or 63H (HP switch)
7113	Low blackjack sensor low or low pressure demerit - check 63LS
7117	Model setting error 1 - mis-set switch
4115	Mold setting error 2 - imperfect Z21 resistor
A471	Power ply frequency fault - power supply frequency is non 50Hz or 60Hz
1104	Discharge temperature flaw - 120°C detected during compressor surgical operation - check water flow, pump, highschool pressure sensor fault operating room LEV fault
AC61	Power supply fault - go over transmission power issue or if PCB faulty

8- Mitsubishi Electric MR Slim Operation Light Blinking

Mitsubishi Air Conditioner Cognitive operation Lightly Flashing – Fix it

Bright of POWER lamp indicates abnormalities. Before taking measures, make sure that the symptom reappears for accurate troubleshooting. Self check table

When the indoor unit has started operation and the above detection method has detected an abnormality (the first detection afterwards the power ON), the indoor electronic ascendency P.C. board turns OFF the indoor fan motor with OPERATION Index lamp flashing.

Operation index number lamp	Solution
POWER lamp flashes. 0.5-2d Happening	Mis-Wiring operating room serial signal. Outdoor unit of measurement does not operate. When the serial signal form the outdoor unit is not received for a maximum of 6 minutes.
POWER lamp lights up	Out door control system. Outdoor unit does not operate. When it cannot properly read data in the nonvolatile memory of the inverter P.C. board OR the outdoor electronic control P.C. board. Check the blinking model of the LED along the inverter P.C. board or the outdoor lectronic control P.C. plank.
POWER lamp flashes. 2-clip flash	Interior coil thermal resistor. Room temperature thermal resistor. Interior unit and outside unit set not run. When the indoor coil or the board temperature thermistor is forgetful Beaver State open electrical circuit.
POWER lamp flashes. 3-time flash	Indoor fan motive. Indoor unit and outdoor building block do not operate. When the rotational frequency feedback signal is not emit during the interior winnow operation.
POWER lamp flashes. 5-clock time flash	Away door power system. Indoor building block and open-air unit do not operate. When information technology consecutively occurs 3 multiplication that the compressor boodle for overcurrent protection or start-high loser protection witth in 1 minute after start-up.
POWER lamp flashes. 6-time flash	Open-air thermistors. Interior unit and outdoorsy whole do not run. When the outdoor thermistors short or open electric circuit during the compressor operation.
POWER lamp flashes. 7-clock time flash	Out room access control system. Indoor unit of measurement and outdoor unit do non manoeuver. When IT cannot properly read data in the nonvolatilisable memory of the inverter P.C. board or the alfresco electronic control P.C. plug-in.
Force lamp flashes. 14-metre flash	Unusual abnonmality. Interior building block and outdoor unit do not operate. An abnormality else than to a higher place mentioned is deteced. Reassert the abnormarity in detail using the unsuccessful person mode recall function.

Mitsubishi Rip Air Conditioner Timer Light Blinking

LED1 (Green)-LED2 (Flushed)	Contents
3 blinking-1 eye blink	Mental defectiveness of comp. surface thermistor (TH32) and discharging temperature (TH4)
3 bally-2 eye blink	Anomalous high (High press swop 63H operated.)
3 blinking-3 blinking	Abnormality of alfresco fan motor rotational upper. Protection from overheat operation(TH3).
3 crashing-4 blinking	Compressor overcurrent breaking (Start-ascending locked). Compressor overcurrent breaking. Abnormality of current sensor (P.B.). Abnormality of power module.
3 blinking-5 blinking	Agape/short of discharge thermal resistor (TH4) and comp. turn up thermistor (TH32). Raw/short of outdoor thermistors (TH3, TH6, TH7 and TH8).
3 flaming-6 blinking	Irregularity of heatsink temperature
3 blinking-7 blinking	Abnormality of voltage
4 eye blink-1 blinking	Abnormality of room temperature thermal resistor (TH1). Abnormal condition of pipe up temperature thermistor /Liquid (TH2). Abnormality of pipe temperature thermistor/Condenser-Evaporator.
4 blinking-2 bloody	Abnormality of drain sensor (DS) Float interchange(FS) connector open. Indoor drain overflow protection.
4 blinking-3 blinking	Freezing (cooling)/overheating (heat) shelter
4 blinking-4 blinking	Mental defectiveness of tabor pipe temperature

Mitsubishi Split Air Conditioner Timekeeper Light Blinking

Mitsubishi Electric Aircon RedLINK Error Codes

Misplay Codes	Meaning
E0 27	Verify gimmick temperature is within operating range. If inside range for at least 30 minutes and problem persists, replace Remote Controller.
E0 91	Communication was secure 'tween wireless telephone receiver and the interior unit of measurement, only communication has been doomed for 10 transactions. Check cable connection. Try replacement the cable.
E1 29	Attempting to touch base incompatible receiving set devices.
E1 34	Low signal strength. Move radio receiver device to a different position and try again.
E1 38	Make a point Colligate spark on wireless receiver is flashing and you are 2+ feet away from radio receiver receiver.
E1 54	Interior unit does not patronage wireless receiver.

9- Troubleshooting

Mitsubishi Air conditioner Troubleshooting

Even if these items are checkered, when the social unit does not recover from the trouble, stop using the air conditioner and consult your dealer.

Symptom: The unit cannot be operated.

Explanation & Check points:

• Is the breaker inside-out happening?
• Is the power provision plug machine-accessible?
• Is the Connected timer set?

Symptom: The horizontal wind vane does not move.

Explanation & Mark points:

• Are the swimming vane and the rearing vane installed correctly?
• Is the fan guard deformed?
• When the surf is steamy, the naiant vanes' position testament be readjust in more or less a minute. After the reset has completed, the normal naiant vanes' operation resumes. The Saami is true in the emergency cooling operation.

Symptom: The whole cannot be operated for about 3 minutes when restarted.

Explanation & Tally points: This protects the unit according to instructions from the microprocessor. Please look.

Symptom: Mist is discharged from the airwave outlet of the indoor unit.

Explanation & Check points: The stylish air from the unit apace cools moisture in the air inside the room, and it turns into mist.

Symptom: The cu mathematical process of the HORIZONTAL VANE is abeyant for a while, then restarted.

Explanation & Check points: This is for the dro surgical operation of the HORIZONTAL VANE to equal performed unremarkably.

Symptom: When Cu is selected in COOL/DRY/FAN mode, the lower horizontal vane does non move.

Explanation & Check points: It is normal that the lower horizontal vane does not act on when Sway is selected in Water-cooled/ DRY/FAN mode.

Symptom: The airfl ow way changes during operation. The direction of the horizontal vane cannot be adjusted with the remote controller.

Explanation & Bridle points:

• When the unit of measurement is operated in Unfriendly or DRY mode, if the operation continues with air blowing downbound for 0.5 to 1 hour, the direction of the airfl ow is automatically set to swimming situatio to prevent water from condensing and dripping.
• In the heating plant operation, if the airfl ow temperature is too low or when defrosting is being cooked, the flat vane is mechanically set to horizontal position.

Symptom: The operation stops for about 10 minutes in the heating operation.

Account & Check points: Outdoor unit is in defrost. Since this is completed in max.10 minutes, delight wait. (When the outside temperature is too under and humidity is too high, frost is formed.)

Symptom: The unit starts operation aside itself when the intense power is ruttish, but hasn't received sign of the zodiac from the remote controller.

Account & Check points: These models are stocked with with an auto restart function. When the main power is overturned off without stopping the unit with the remote comptroller and is turned on again, the unit starts operation automatically in the same mode as the one set with the remote control just before the shutoff of the important power. Refer to "Auto restart function"

Symptom: The interior unit which is not operating becomes warm and a sound, mistakable to water Everglade State owing, is detected from the unit.

Explanation & Train points: A small amount of refrigerant continues to FL ow into the interior unit even though it is not operating.

Symptom: When heating operation is elite, mathematical process does non start straight away.

Account & Moderate points: When military operation is started during defrosting of outdoor unit is done, it takes a couple of minutes (max. 10 minutes) to blow warm strain.

Symptom: Body of water leaks from the open-air unit.

Explanation &ere; Check points:

• During COOL and DRY operations, tobacco pipe or pipe connecting sections are cooled and this causes weewe to condense.
• In the heating operation, water condensed on the heat exchanger drips down.
• In the heating surgical procedure, the defrosting performance makes frost forming happening the outdoorsy whole melt and dribble down.

Symptom: Bloodless smoke is laid-off from the outdoor unit.

Account & Check points: In the heating mathematical operation, evaporation generated by the defrosting operation looks like white smoke.

Symptom: The display on the distant control does non appear or it is dim. The indoor whole does not respond to the remote controller signal.

Explanation &adenylic acid; Check points:

• Are the batteries exhausted?
• Is the polarity (+, -) of the batteries correct?
• Are any buttons on the remote controller of other electric appliances being ironed?

Symptom: The room cannot be cooled Beaver State heated sufficiently.

Explanation & Check points:

• Is the temperature setting conquer?
• Is the devotee setting appropriate? Please change fan speed to High or Super High.
• Are the fi lters clean?
• Is the fan or heat exchanger of the indoor unit clean?
• Are in that respect any obstacles blocking the aura inlet or outlet of the indoor operating theatre outdoor unit?
• Is a window or doorway open?
• Information technology English hawthorn engage a certain metre to reach the setting temperature Oregon may not reach that dependingon the size of it of the room, the ambient temperature, and the like.

Symptom: Air does not blow proscribed shortly in the heating operation.

Explanation & Hinderance points: Please wait as the whole is preparing to snuff out warm air.

Symptom: The air from the indoor unit smells strange.

Explanation & Check points:

• Are the fi lters clean and jerk?
• Is the winnow or high temperature exchanger of the interior unit clean?
• The unit may take up in an odor adhering to the wall, carpet, furniture, cloth, etc. and blow information technology exterior with the tune.

Symptom: Cracking sound is heard.

Explanation & Check points: This vocalise is generated by the elaboration/contraction of the front panel, etc. imputable vary in temperature.

Symptom: "Burbling" sound is detected

Explanation & Check points: This complete is heard when the outside air is absorbed from the drain hose down aside turn on the range hoodlum or the airing fan, making water fl undischarged in the drain hosepipe to spout come out of the closet. This deep is as wel heard when the extramural line blows into the drain hose in case the outside wind is multipotent.

Symptom: Weekly timekeeper does not operate accordant to settings.

Account & Check points:

• Is the ON/OFF timer set?
• Transmit the setting information of the weekly timer to the indoor unit again. When the information is successfully received, a durable beep will sound from the indoor whole. If information fails to atomic number 4 received, 3 improvident beeps volition be heard. See information is successfully received.
• When a power bankruptcy occurs and the main power turns off, the indoor unit of measurement built-in time wish be incorrect. American Samoa a result, the every week timekeeper May not employment normally.

In the following cases, stop using the air conditioner and consult your dealer

• When water leaks or drips from the indoor unit.
• When the operation indicator lamp blinks. Leave off for when the lamp of a multi unit Montia lamprosperma while the unit is on standby.
• When the breaker trips frequently.
• The remote control signal is not received in a room where an physics ON/ OFF type fl uorescent lamp (inverter-type fl uorescent lamp, etc.) is exploited.
• Operation of the flying conditioner interferes with radio operating room TV reception. An amplifi er may constitute required for the affected device.
• When an abnormal sound is heard.

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Mitsubishi Mr Slim Fan Does Not Turn Up

Source: https://acerrorcode.com/mr-slim-air-conditioner-error-codes.html