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Mitsubishi City Multi VRF air conditioning systems are famed for their ultra-quiet noise levels, higher savings on installation and running costs, and a significantly reduced footprint.
But much like other air conditioner brands, your mitsubishi city multi air conditioner may, on occasion, malfunction.
Now, a good place to start your troubleshooting when a fault occurs is looking for error codes- and the great thing is that some of the most common mitsubishi city multi error codes can be resolved by performing basic DIY maintenance.
This article lists the most prevalent mitsubishi city multi error codes and their meaning- plus tips to help you fix the problem depending on the exact model you own.
Read through the fault codes- solving the problem causing your air conditioner not to operate properly may be a lot easier than you think:
With many mitsubishi city multi air conditioner models, fault codes are made up of 3 or 4 digits.
Here is a detailed list of mitsubishi city multi error codes, possible meanings, and potential troubleshooting steps (for some):
Mitsubishi City Multi Error Codes- full list
Error code 403 (Mitsubishi City Multi R22, R4O7c, and R410A models)
Meaning: Communication fault between boards
Recommended fix: Check transformer, bus voltage, and inter-connecting cables. Also check inverter error detail for which 2 boards.
Error code 1102 (Mitsubishi City Multi R22, R4O7c, and R410A models)
Meaning: Compressor discharge temperature high (has exceeded 110°C).
Recommended fixes: refrigerant may need to be refilled (could be insufficient). In addition, check discharge thermistor.
Mitsubishi city multi error code 1111, 1112, 1113 (Mitsubishi City Multi R22, R4O7c)
Meaning: Low pressure/temperature problem
Recommended fixes: check thermistors (TH2, TH3, TH4). Also check gas charge, the indoor fan, heat exchanger, and filter
Error code 1202 (Mitsubishi City Multi R22, R4O7c, R410A)
Meaning: Preliminary fault to error code 1102
Error code 1204 (Mitsubishi City Multi R410A)
Meaning: Preliminary heat exchanger gas temperature sensor problem
Recommended fixes: check thermistors 10a & 10b
Error code 1205 (Mitsubishi City Multi R22, R4O7c, R410A)
Meaning: Preliminary thermistor issue(TH5)
Error code 1211 (Mitsubishi City Multi R22, R4O7c)
Meaning: Preliminary thermistor issue(TH2)
Error code 1214 (Mitsubishi City Multi R22, R4O7c, R410A)
Meaning: Preliminary thermistor issue(THHS)
Error code 1216 (Mitsubishi City Multi R22, R4O7c, R410A)
Meaning: Preliminary thermistor issue(TH7)
Error code 1217 (Mitsubishi City Multi R22, R4O7c, R410A)
Meaning: Preliminary thermistor issue(TH8)
Error code 1219 (Mitsubishi City Multi R22, R4O7c)
Meaning: Preliminary thermistor issue(TH9)
Error code 1221 (Mitsubishi City Multi R22, R4O7c, R410A)
Meaning: Preliminary thermistor issue(TH6)
Error code 1243 (Mitsubishi City Multi R4O7c)
Meaning: Preliminary thermistor issue(TH10)
Error code 1301 (Mitsubishi City Multi R4O7c)
Meaning: Low pressure fault(63L operation)-low pressure sensor could be sensing less than 1 bar immediately before starting.
Error code 1302 (Mitsubishi City Multi R22, R4O7c)
Meaning: High pressure issue – check pressure in the system for more than 29 bar(R407c)/38 bar(R410A).
Recommended fixes: Check the high pressure sensor against the gauge pressure
Error code 1368 (Mitsubishi City Multi R22, R4O7c)
Meaning: Pressure sensor issue(PS1) at BC
Recommended fixes: Compare the pressure reading on SW1 (on O/C)
Error code 1370 (Mitsubishi City Multi R22, R4O7c)
Meaning: Pressure sensor fault(PS3) at BC
Recommended fixes: compare the pressure reading on SW1(at O/C)
Error code 1402(Mitsubishi City Multi R410A)
Meaning: Preliminary issue to 1302
Error code 1500 (Mitsubishi City Multi R22, R4O7c, R410A)
Meaning: System overcharge(Abnormal low compressor super-heat ).
Recommended fixes: discharge thermistor TH4
Error code 1501 (Mitsubishi City Multi R22, R4O7c)
Meaning: High compressor shell temperature
Recommended fixes: check for potential shortage of gas. Can also be due to insufficient indoor index running(comms room units).
Error code 1505 (Mitsubishi City Multi R22, R4O7c)
Meaning: Abnormal suction pressure(generated when low pressure sensor detects a vacuum)
Recommended fixes: check for blockage or a closed valve. Also check for sensor fault
Error code 2500 (Mitsubishi City Multi R22, R4O7c, R410A)
Meaning: there is lack of waterflow on the water circuit
Mitsubishi city multi error code 2502 (R22, R4O7c, R410A)
Meaning: I/C has water level in the drip tray
Troubleshooting steps: check for open/closed circuit(temperature sensors). Also check if the pump is operating correctly.
Error code 2503 (R22, R4O7c, R410A)
Meaning: I/C has water level in the drip tray
Troubleshooting steps: check for closed circuit(on float switch). Also check if the pump is running properly.
Error code 2600 (R22, R410A)
Meaning: Water is leaking from humidifier
Error code 4102 ( R410A)
Meaning: Open phase fault
Troubleshooting steps: Check the power supply as well as noise filter for possible loss of phase. Also check the wiring and fuses.
Error code 4103 (R22, R4O7c, R410A)
Meaning: Reverse phase issue.
Troubleshooting steps: -check phase rotation. Also check if there is loss of phase (through noise filter). Finally check if there is a blown fuse or if the high pressure switch is open (at power on)
Error code 4108 ( R410A)
Meaning: Over current protection (on DOL compressor)
Troubleshooting steps: Check the following parts: power supply, contactor, and compressor
Error code 4115 (R22, R4O7c, R410A)
Meaning: power supply abnormal
Troubleshooting steps: – check power, connections, fuses, and PCB
Error code 4116 (R22, R4O7c, R410A)
Meaning: Fan motor abnormal
Troubleshooting steps: check fan motor as well as the board (relates to the indoor unit/Lossnay unit)
Error code 4210 ( R22)
Meaning: Compressor over current fault
Troubleshooting steps: check the inverter balance. Also check the compressor and inverter.
Error code 4220 (R4O7c, R410A)
Meaning: Low BUS voltage on inverter board (Less than 289VdcDC detected).-
Troubleshooting steps: check mains supply
Error code 4225 (R410A)
Meaning: Low DC voltage detected on Vdc on the fan inverter
Troubleshooting steps: check the CNVdc for 300Vdc (on diode stack). Also check power supply(mains) to your outdoor unit
Error code 4230 (R22, R4O7c, R410A)
Meaning: High temp on heat sink (on inverter)
Troubleshooting steps: check for blockages (in air duct). Also check if the INV fan has failed. Finally test if the thermistor has failed.
Error code 4235 (R410A)
Meaning: Fan inverter heat sink overheating protection due to reduced airflow through the heat sink or a fan motor fault. This could also indicate THHS thermistor issue.
Error code 4240 (R22, R4O7c, R410A)
Meaning: Over current protection- high current may have been detected for 10 (or more) minutes.
Possible fixes: check inverter balance. Also try to identify what may be causing reduced airflow through the heat sink
Error code 4245 (R410A)
Meaning: Over current protection due to potential ACCT current sensor problem (Should read 280ohms between pins 1 and 2 and across the pins 3 and 4.
Error code 4250 (R410A)
Meaning: Over current protection (may be caused by Inverter IPM fault/Compressor lock)
Troubleshooting steps: check inverter balance
Error code 4255 (R410A)
Meaning: Inverter cooling fan issue.
Troubleshooting steps: if using high static fan, you should check that the SW3-9 is on.
Error code 4260 (R4O7c, R410A)
Meaning: Preliminary overheat protection (on inverter heat sink) probably caused by reduced airflow through the heat sink. The issue can also be due to a fan motor problem or THHS thermistor fault.
Error code 5101, 5102, 5103, 5104 (R22, R4O7c, R410A)
Meaning:Thermistor fault (at indoor/outdoor unit)
Troubleshooting steps: check error code address
Error code 5105 (R22, R4O7c, R410A)
Meaning:TH5 open/short circuit
Troubleshooting steps: The TH may be disconnected from the board. Check.
Error code 5106 (R22, R4O7c, R410A)
Meaning:TH6 open/short circuit
Troubleshooting steps: The TH may be disconnected from the board. Check.
Error code 5107 (R22, R4O7c, R410A)
Meaning:TH7 open/short circuit
Troubleshooting steps: The TH may be disconnected from the board. Check.
Error code 5108 (R22, R4O7c)
Meaning:TH8 open/short circuit
Troubleshooting steps: The TH may be disconnected from the board. Check.
Error code 5109 (R4O7c)
Meaning:TH9 open/short circuit
Troubleshooting steps: The TH may be disconnected from the board. Check.
Error code 5110 (R22, R4O7c, R410A)
Meaning:TH10 open/short circuit
Troubleshooting steps: The TH may be disconnected from the board. Check.
Error code 5111 (R22, R410A)
Meaning: BC box thermistor fault (due to TH11 open/short circuit or disconnection from board/pipe)
Error code 5112 (R22, R4O7c, R410A)
Meaning: BC box thermistor fault (due to TH10 open/short circuit or disconnection from board/pipe)
Error code 5113 (R22), Error code 5114 (R22)
Meaning: BC box thermistor fault (due to TH open/short circuit or disconnection from board/pipe)
Error code 5115 (R22, R410A)
Meaning: BC box thermistor fault (due to TH15 open/short circuit or disconnection from board/pipe)
Error code 5116 (R22, R410A)
Meaning: BC box thermistor fault (due to TH16 open/short circuit or disconnection from board/pipe)
Error code 5201 (R22, R4O7c, R410A)
Meaning: Pressure sensor problem (outdoor unit or BC box)
Troubleshooting steps: check error code address or SW 1 pressure sensor readings.
Error code 5202 (R22)
Meaning: Pressure sensor problem (PS2) in BC box
Error code 5203 (R22, R4O7c, R410A)
Meaning: Pressure sensor problem (outdoor unit or BC box)
Troubleshooting steps: check error code address or SW 1 pressure sensor readings.
Error code 5301 (R4O7c, R410A)
Meaning: Current sensor fault (or ACCT/DCCT)
Troubleshooting steps: check inverter error details
Error code 5401 (R410A)
Meaning:Temperature sensor fault
Troubleshooting steps: check CN 30 for humidity sensor
Error code 5701 (R410A)
Meaning: float switch connector loose
Troubleshooting steps: check switch. Also check CN4F (on the indoor unit)
Error code 6201 (R410A)
Meaning: TB7 transmission line has communication error
Troubleshooting steps: check for abnormality in voltage/short
Error code 6202 (R410A)
Meaning: Transmission processor hardware fault
Troubleshooting steps: check for short/noise on M-Net cable
Error code 6600 (R22, R4O7c, R410A)
Meaning: Repeat address issue -it means the same address has been assigned two (or more units)
Troubleshooting steps: the repeated address need to be corrected
Error code 6601 (R410A)
Meaning: Polarity setting fault (there is no voltage –or there is a short circuit -on m-net transmission line)
Error code 6602 (R22, R4O7c, R410A)
Meaning: Hardware error on transmission processor. It may also indicate noise interference or even a polarity problem on TB 7.
Error code 6603 (R22, R4O7c, R410A)
Meaning: Bus circuit busy.
Troubleshooting steps: check if the indoor unit (or anything else) is wired into TB7 (instead of TB3) and correct the wiring error
Mitsubishi city multi error code 6607 /mitsubishi vrf error code 6607 (R22, R4O7c, R410A)
Meaning: Communication issue (no response is coming from unit whilst the system is operational)
Error code 6608 (R22, R4O7c, R410A)
Meaning: Communication error -there is loss of voltage (or noise) entering into the transmission line
Error code 6831 (R410A)
Meaning:MA R/C communication fault
Troubleshooting steps: check connections on TB 15. You can also check that the controller had been removed while the I /C was powered
Error code 6832, 6833, 6834 (R410A)
Meaning:MA controller communication fault
Troubleshooting steps: check cable length – should not be bigger than 500m. Also, check for proper connection and that the proper type of cable has been used.
Error code 7100 (R22, R4O7c, R410A)
Meaning: Over capacity
Error code 7101 (R22, R4O7c, R410A)
Meaning: Capacity setting issue – SW2 set wrong (on indoors), SW5 set wrong on YHMA outdoor (SW3-10 on older kits)
Mitsubishi city multi error code 7102 (R22, R4O7c, R410A)
Meaning: It may point to an error in the number of units you have connected or indicate loss of MNet voltage (short/break). It may also mean there is no power to the BC or even wrong SW 5 setting on box (or even wrong box type).
Error code 7105 (R22, R4O7c, R410A)
Meaning: Address setting issue – OC/BC addressed incorrectly
Error code 7106 (R4O7c, R410A)
Meaning: Attribute setting fault (SW3-1 setting on GUF)
Error code 7107 (R4O7c, R410A)
Meaning: Port setting issue- check if there is too much capacity on one port. Also check wiring, SW2 setting, SW14 setting (it could be wrong too) or even for wrong units (on a box if using multiple boxes)
Wrap up
This ‘mitsubishi city multi error codes check list’ provides an easy-to-use reference guide on all mitsubishi city multi error codes across the company’s product range.
More troubleshooting ideas and guidance can be found on the trouble-shooting section of your specific model’s service manual.
Be sure to contact a qualified HVAC technician if your aircon need advanced repair(s).
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FAULT CODE = 1102
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = High compressor discharge temperature. Discharge temperature has exceeded 110°C or more. Short of refrigerant. Discharge thermistor
FAULT CODE = 1111
R22 = x
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = Low pressure/temperature fault — check thermistors (TH2, TH3, TH4), gas charge, indoor fan, heat exchanger and filter
FAULT CODE = 1112
R22 = x
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = Low pressure/temperature fault — check thermistors (TH2, TH3, TH4), gas charge, indoor fan, heat exchanger and filter
FAULT CODE = 1113
R22 = x
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = Low pressure/temperature fault — check thermistors (TH2, TH3, TH4), gas charge, indoor fan, heat exchanger and filter
FAULT CODE = 1202
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Preliminary fault to 1102
FAULT CODE = 1204
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Preliminary heat exchanger gas temperature sensor fault — check thermistors 10a and 10b
FAULT CODE = 1205
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Preliminary thermistor fault (TH5)
FAULT CODE = 1211
R22 = x
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = Preliminary thermistor fault (TH2)
FAULT CODE = 1214
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Preliminary thermistor fault (THHS)
FAULT CODE = 1216
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Preliminary thermistor fault (TH7)
FAULT CODE = 1217
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Preliminary thermistor fault (TH8)
FAULT CODE = 1219
R22 = x
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = Preliminary thermistor fault (TH9)
FAULT CODE = 1221
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Preliminary thermistor fault (TH6)
FAULT CODE = 1243
R22 = —
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = Preliminary thermistor fault (TH10)
FAULT CODE = 1301
R22 = —
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = Low pressure fault (63L operation) low pressure sensor sensing less than 1 bar immediately before starting
FAULT CODE = 1302
R22 = x
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = High pressure fault — check pressure in system for more than 29 bar (R407c) 38 bar (R410A). Check high pressure sensor against gauge pressure
FAULT CODE = 1368
R22 = x
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = Pressure sensor fault (PS1) at BC — compare pressure reading on SW1 on O/C
FAULT CODE = 1370
R22 = x
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = Pressure sensor fault (PS3) at BC — compare pressure reading on SW1 at O/C
FAULT CODE = 1402
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Preliminary fault to 1302
FAULT CODE = 1500
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = System overcharge. Abnormal low compressor superheat — discharge thermistor TH4
FAULT CODE = 1501
R22 = x
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = High compressor shell temp — check for shortage of gas, insufficient indoor index running (comms room units)
FAULT CODE = 1505
R22 = x
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = Suction pressure abnormal — generated by low pressure sensor detecting a vacuum — check for blockage, closed valve or sensor fault
FAULT CODE = 2500
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Detecting lack of water flow on a water circuit
FAULT CODE = 2502
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = I/C has water level in drip tray, when the unit was running in cooling (temperature sensors — check for open or closed circuit and operation of pump)
FAULT CODE = 2503
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = I/C has water level in drip tray when the unit was running in cooling (float sensor — check for closed circuit on float switch and operation of pump)
FAULT CODE = 2600
R22 = x
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Water leak from humidifier
FAULT CODE = 4100
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = Compressor over current protection on Mr Slim with M-net interface — check inverter or compressor
FAULT CODE = 4101
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = Compressor over current protection on Mr Slim with M-net interface — check inverter or compressor
FAULT CODE = 4102
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Open phase fault — check power supply and noise filter for loss of phase, check wiring and fuses
FAULT CODE = 4103
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Reverse phase fault — check phase rotation, loss of phase through the noise filter, fuse blown and high pressure switch open at power on
FAULT CODE = 4106
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Transmission power supply fault — check wiring, high current, incorrect voltage on transmission line and/or M-Net board
FAULT CODE = 4108
R22 = —
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = Over current protection on DOL compressor — check power supply, contactor and compressor
FAULT CODE = 4115
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Power supply abnormal — check power, fuses, connections and PCB
FAULT CODE = 4116
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Fan motor abnormal — check fan motor and board (relates to indoor unit or Lossnay unit)
FAULT CODE = 4124
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = Thermal switch (49C) open circuit on Mr Slim on M-Net — reset and check pressures and air flow
FAULT CODE = 4210
R22 = x
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = Compressor over current problem — check inverter balance. Compressor and inverter
FAULT CODE = 4220
R22 = —
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Low inverter board BUS voltage. Less than 289VdcDC is detected. — check mains supply
FAULT CODE = 4225
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Low DC voltage on Vdc on fan inverter — check CNVdc for 300Vdc on diode stack and check mains power supply to outdoor unit
FAULT CODE = 4230
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = High temperature on heat sink on inverter — check for blockages in air duct, failure of INV fan or failure of thermistor
FAULT CODE = 4235
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Fan inverter heat sink overheat protection. Reduced airflow through heat sink. Fan motor problem. THHS thermistor problem.
FAULT CODE = 4240
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Over current protection. If high current is detected for more than 10 minutes — check inverter balance. Reduced airflow through heat sink
FAULT CODE = 4245
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Over current protection. Possible ACCT current sensor fault. Should read 280 ohms between pins 1 & 2 and across pins 3 & 4
FAULT CODE = 4250
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Over current protection. Inverter IPM problem. Compressor lock — check inverter balance
FAULT CODE = 4255
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Inverter cooling fan problem — if high static fan is used then check that SW3-9 is on
FAULT CODE = 4260
R22 = —
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Preliminary inverter heat sink overheat protection. Reduced airflow through heat sink. Fan motor problem. THHS thermistor problem.
FAULT CODE = 5101
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Thermistor fault at indoor/outdoor unit — check fault code address
FAULT CODE = 5102
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Thermistor fault at indoor/outdoor unit — check fault code address
FAULT CODE = 5103
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Thermistor fault at indoor/outdoor unit — check fault code address
FAULT CODE = 5104
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Thermistor fault at indoor/outdoor unit — check fault code address (indoor fault — check SW7-3 is off)
FAULT CODE = 5105
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = TH5 open/short circuit — check if the TH is disconnected from the board
FAULT CODE = 5106
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = TH5 open/short circuit — check if the TH is disconnected from the board
FAULT CODE = 5107
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = TH7 open/short circuit — check if the TH is disconnected from the board
FAULT CODE = 5108
R22 = x
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = TH8 open/short circuit — check if the TH is disconnected from the board
FAULT CODE = 5109
R22 = —
R407c = x
R410A = —
LOSSNAY = —
DESCRIPTION = TH9 open/short circuit — check if the TH is disconnected from the board
FAULT CODE = 5110
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = TH10 open/short circuit — check if the TH is disconnected from the board
FAULT CODE = 5111
R22 = x
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = BC box thermistor error — TH11 open/short circuit, disconnected from board/pipe
FAULT CODE = 5112
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = BC box thermistor error — TH10 open/short circuit, disconnected from board/pipe
FAULT CODE = 5113
R22 = x
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = BC box thermistor error — TH open/short circuit, disconnected from board/pipe
FAULT CODE = 5114
R22 = x
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = BC box thermistor error — TH open/short circuit, disconnected from board/pipe
FAULT CODE = 5115
R22 = x
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = BC box thermistor error — TH15 open/short circuit, disconnected from board/pipe
FAULT CODE = 5116
R22 = x
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = BC box thermistor error — TH16 open/short circuit, disconnected from board/pipe
FAULT CODE = 5201
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Pressure sensor fault outdoor unit/BC box — check fault code address/SW1 pressure sensor readings
FAULT CODE = 5202
R22 = x
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = Pressure sensor fault (PS2) in the BC box
FAULT CODE = 5203
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Pressure sensor fault (PS3) in the BC box
FAULT CODE = 5300
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = A-Control UH fault — see Mr Slim fault code list
FAULT CODE = 5301
R22 = —
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Current sensor fault, ACCT or DCCT — check inv. error details
FAULT CODE = 5401
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Temperature sensor fault — check CN30 for humidity sensor
FAULT CODE = 5701
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Loose float switch connector — check switch, check CN4F on indoor unit
FAULT CODE = 6201
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = TB7 transmission line communication error — check for voltage abnormality/short
FAULT CODE = 6202
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Transmission processor hardware error — check for noise/short on M-Net cable
FAULT CODE = 6600
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Repeat address fault — two or more units are assigned the same address — correct the repeated address
FAULT CODE = 6601
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Polarity setting error — no voltage or short circuit on the m-net transmission line
FAULT CODE = 6602
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Hardware error of transmission processor. Noise interference. Polarity problem on TB7
FAULT CODE =
R22 =
R407c
R410A =
LOSSNAY = —
DESCRIPTION =
FAULT CODE = 6603
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Bus circuit busy — check if indoor unit, Lossnay unit or anything else has been wired into TB7, instead of TB3
FAULT CODE = 6607
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Communication issue — no response back from unit whilst system is operational
FAULT CODE = 6608
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Communication error — loss of voltage or noise entering the transmission line
FAULT CODE = 6700
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K control communication error — R22 type unit connected onto M-Net circuit comms error
FAULT CODE = 6701
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K control communication error — R22 type unit connected onto M-Net circuit comms error
FAULT CODE = 6702
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K control duplicate address error — two or more R22 type units connected onto M-Net circuit with the same address
FAULT CODE = 6750
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K control communication error — R22 type unit connected onto M-Net circuit comms error
FAULT CODE = 6751
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = R22 R/A thermistor fault (P1)
FAULT CODE = 6752
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = R22 frost protection at I/C (P6)
FAULT CODE = 6753
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = Comms fault between O/C and I/C
FAULT CODE = 6754
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = R22 drain fault (P5)
FAULT CODE = 6755
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = R22 drain fault (P5)
FAULT CODE = 6756
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = R22 frost protection at I/C (P6)
FAULT CODE = 6757
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = System error
FAULT CODE = 6758
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = Comms fault between I/C and O/C
FAULT CODE = 6761
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = R22 R/A thermistor fault (P1)
FAULT CODE = 6762
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = R22 TH2 fault check resistance (P2)
FAULT CODE = 6763
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = R22 Comms fault between I/C and O/C
FAULT CODE = 6764
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = R22 drain fault (P4)
FAULT CODE = 6765
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = R22 drain fault (P5)
FAULT CODE = 6766
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = R22 frost protection at I/C (P6)
FAULT CODE = 6767
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = R22 comms fault between I/C and O/C
FAULT CODE = 6771
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K abnormality — high pressure abnormality or low pressure abnormality
FAULT CODE = 6772
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K abnormality — inner thermostat function, discharge temperature abnormality, shell thermostat function, over current protection
FAULT CODE = 6773
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K abnormality — radiator plate thermostat function
FAULT CODE = 6774
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K abnormality — outdoor thermistor abnormality
FAULT CODE = 6775
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K abnormality — pressure sensor abnormality, indoor/outdoor communication error
FAULT CODE = 6776
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K abnormality — over current shut-off
FAULT CODE = 6777
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K abnormality — system error
FAULT CODE = 6778
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K abnormality — normal
FAULT CODE = 6779
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = K abnormality — refrigerant overcharge, abnormal voltage, abnormal CT sensor
FAULT CODE = 6830
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = Comms fault between I/C and R/C check connections to MA R/C and check for 12Vdc check R/C not set sub controller
FAULT CODE = 6831
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = MA R/C communication fault — check connections on TB15 or that the controller was removed while the I/C was powered
FAULT CODE = 6832
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = 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
FAULT CODE = 6833
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = 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
FAULT CODE = 6834
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = 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
FAULT CODE = 6840
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = A-Control E6/E8 fault — see Mr Slim fault code list
FAULT CODE = 6841
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = A-Control E7/E9 fault — see Mr Slim fault code list
FAULT CODE = 6844
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = A-Control EA fault — see Mr Slim fault code list
FAULT CODE = 6845
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = A-Control Eb fault — see Mr Slim fault code list
FAULT CODE = 6846
R22 = —
R407c = —
R410A = —
LOSSNAY = —
DESCRIPTION = A-Control EC fault — see Mr Slim fault code list
FAULT CODE = 7100
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Over capacity — (R2 150% index exceeded) (Y 130% index exceeded)
FAULT CODE = 7101
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Capacity setting error — SW2 set wrong on indoors, SW5 on YHMA outdoor, (SW3-10 on older kit)
FAULT CODE = 7102
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Error in number of connected units — loss of M-Net voltage (short or break), no power to BC, wrong SW5 setting on box, wrong box type
FAULT CODE = 7105
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Address setting error — OC or BC addressed wrong
FAULT CODE = 7106
R22 = —
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Attribute setting error — SW3-1 setting on a GUF
FAULT CODE = 7107
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = 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
FAULT CODE = 7110
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Check SW5-7 is correctly set
FAULT CODE = 7111
R22 = x
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Remote control sensor fault — SW1 — 1 on and no controllers fitted or faulty remote controller
FAULT CODE = 7113
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Function setting error — wrong SW5 setting or wrong resistors fitted on YHM-A
FAULT CODE = 7117
R22 = —
R407c = —
R410A = x
LOSSNAY = —
DESCRIPTION = Model setting error — SW5 set wrong or wrong resistors in
FAULT CODE = 7130
R22 = —
R407c = x
R410A = x
LOSSNAY = —
DESCRIPTION = Incompatible equipment on M-Net — check split with MAC 399 wired onto the TB5 line TB5 line, not the TB7
Обновлено: 12.06.2023
Определить ошибку в бытовых сплит системах можно по миганию индикаторов на панели внутреннего блока.
Для моделей:
MSC-GE20VB
MSC-GE25VB
MSC-GE35VB
MS-GE50VB
MSH-GE20VB
MS-GA60VB
MS-GD80VB
MSH-GA60VB
MSH-GD80VB
Поиск и устранение неисправностей:
Ошибки промышленных систем ME
Для мультизональных систем серии City Multi
Все серии и модели кондиционеров ME
Получить расшифровку всех возможных кодов холодильного оборудования Mitsubishi Electric можно на сайте:
Программа Mitsubishi Electric Service
Компания Mitsubishi Electric разработала программу для телефонов с помощью которой можно получить расшифровку кода ошибок.
Программа позволяет считывать:
Коды ошибок Mitsubishi
Все ошибки Mitsubishi AIRTREK, ASX, CARISMA,COLT, DELICA, DIAMANTE, DION, ECLIPSE, ENDEAVOR, GALANT, GRANDIS, GTO, i-MiEV, IO, L200, LANCER, LANCER CLASSIC, LANCER EVO, MINICA, MIRAGE, MONTERO, OUTLANDER, PAJERO, PAJERO SPORT, SPACE STAR, SPACE WAGON, TOWN BOX
FUSO, FUSO Canter, FUSO Fighter, FUSO Super Great
Ошибки Mitsubishi по протоколу OBDI. Самодиагностика.
11 — Датчик кислорода — неисправность
12 — Датчик массового расхода воздуха — неисправность
13 — Датчик температуры впускного воздуха — неисправность
14 — Датчик положения дроссельной заслонки (TPS) — неисправность
15 — Датчик положения двигателя на холостом ходу — неисправность
21 — Датчик температуры охлаждающей жидкости — неисправность
22 — Датчик положения коленчатого вала — неисправность
23 — Датчик положения распределительного вала — неисправность
24 — Датчик скорости автомобиля — неисправность
25 — Датчик барометрического давления — неисправность
31 — Датчик детонации — неисправность
32 — Датчик абсолютного давления — неисправность
36 — Неисправность сигнала регулировки времени зажигания
39 — Датчик кислорода — неисправность
41 — Неисправность форсунки / форсунок
42 — Топливный насос — неисправность
43 — Система отработавших газов (EGR) — неисправность
44 — Катушка зажигания (цилиндры № 1 и № 4) — неисправность
52 — Катушка зажигания (цилиндры № 2 и № 5) — неисправность
53 — Катушка зажигания (цилиндры № 3 и № 6) — неисправность
55 — Управление холостым ходом (IAC) — неисправность датчика положения клапана
59 — Кислородный датчик (задний) — неисправность
61 — Модуль управления трансмиссией — снижение мощности — некорректный сигнал
62 — Система VIC — неисправность датчика положения клапана
71 — Неисправность электромагнитного вакуумного клапана управления тягой (Traction Control)
72 — Неисправность соленоида вентиляционного клапана системы управления тягой (Traction Control)
Кондиционеры
Коды ошибок Mitsubishi Electric MSC-GE20/25/35/50VB, MS(H)-GA60/GD80VB, MU(H)-GA20/GA25/GA35/GE50/GA60/GD80VB
1. Меры предосторожности
1. Перед поиском неисправности проверьте следующее:
1) Питание к блокам.
2) Правильность соединения внутреннего и наружного блоков.
2. Обратите внимание на следующее:
1) Сначала выключите кондиционер с пульта ДУ, убедитесь, что жалюзи закрылись, и только после этого выключайте питание.
2) Когда вынимаете платы, не повредите компоненты платы.
3) При отключении разъемов не тяните за провод.
3. Процедура поиска неисправностей
1) Проверьте, не мигает ли индикаторная лампочка, указывая на неисправность. Установите количество и периодичность миганий, чтобы определить ошибку.
2) Если есть предположение, что плата дефектна, проверьте визуально наличие плохих контактов, сгоревших компонентов.
4. Как менять батарейки
1) Замените батареи и установите крышку
Примечание 1 : Если не нажать кнопку “RESET” пульт ДУ может неправильно функционировать.
Примечание 2 : Информация по мультисистемам
Наружные блоки: MXZ-A14WV, MXZ-A18WV, MXZ-A26WV, MXZ-A32WV.
Внутренние блоки неинверторной серии можно подключать также к инверторным системам тип:
MXZ-A14WV, MXZ-A18WV, MXZ-A26WV, MXZ-A32WV.
В зависимости от производительности 2, 3 или 4 внутренних блока могут работать одновременно. Наружный блок включается в режим, соответствующий режиму работы первого включеного блока.
Если последующий блок включен в другой режим, то блок работать не будет и при этом будет мигать правый индикатор, как показано ниже. Все блоки мультисистемы должны быть включены в одинаковый режим: охлаждение или обогрев.
Таблица кодов ошибок кондиционеров Mitsubishi Electric MSC-GE20/25/35VB, MS-GE50VB, MSH-GE50VB
· Мигающий светодиод обозначает неисправность.
· Постоянно включенный светодиод обозначает нормальную работу.
Внимание! Перед проведением ремонтных работ убедитесь, что симптомы повторяются.
Кондиционеры
Коды ошибок Mitsubishi Electric MUZ-FD_VA наружный блок
1. Меры предосторожности
1. Перед поиском неисправности проверьте следующее:
1) Питание к блокам.
2) Правильность соединения внутреннего и наружного блоков.
2. Обратите внимание на следующее:
1) Сначала выключите кондиционер с пульта ДУ, убедитесь, что жалюзи закрылись, и только после этого выключайте питание.
2) Когда вынимаете платы, не повредите компоненты платы.
3) При отключении разъемов не тяните за провод.
3. Процедура поиска неисправностей
1) Проверьте, не мигает ли индикаторная лампочка, указывая на неисправность. Установите количество и периодичность миганий, чтобы определить ошибку.
2) Если есть предположение, что плата дефектна, проверьте визуально наличие плохих контактов, сгоревших компонентов.
Проверка последних неисправностей MUZ-FD25VA(BH) MUZ-FD35VA(BH) MUZ-FD50VA(BH)
Информация о неисправности фиксируется и сохраняется в памяти системы. Поэтому даже после восстановления работоспособности можно проверить, что случилось с системой.
Этот режим удобен для диагностики систем, неисправность в которых повторно не появляется.
1. Последовательность проверки последних неисправностей
Примечания: 1) Убедитесь, что режим проверки последних ошибок завершен. В противном случае нормальная работа невозможна.
W 2. Мигание светодиода при неисправности внутреннего блока
W 3. Мигание светодиода при неисправности наружного блока
2. Алгоритм проверки последних неисправностей
Примечания: 1) Убедитесь, что режим проверки последних ошибок завершен. В противном случае нормальная работа невозможна.
2) Если очистка памяти не произведена, то информация о последней неисправности сохраняется в памяти.
W 2. Мигание светодиода при неисправности наружного блока
Таблица кодов неисправностей MUZ-FD25/35 (в режиме последних неисправностей)
Таблица кодов неисправностей MUZ-FD50 (в режиме проверки последних неисправностей)
В режиме проверки последних неисправностей наружного блока можно проверить указанные в таблице неисправности. В режиме проверки последних неисправностей внутреннего/наружного блоков проверяются только пункты, отмеченные знаком „О”.
Термистор (температура нагнетания)включен1 разЗамыкание или обрыв термистора фиксируется при работе компрессора.
• Проверьте термисторы наружногоблока
Примечание:
Формат индикации в режиме проверки последних неисправностей отличается от формата индикации текущих неисправностей.
Таблица кодов неисправностей MUZ-FD25/35
Считается количество миганий светодиода после интервала в 2.5 секунды, когда он выключен.
Например, на рисунке показано “мигает 2 раза”.
Таблица кодов неисправностей MUZ-FD50
Примечание: 1. Расположение светодиодов на плате наружного блока показано на рисунке.
2. При нормальной работе наружного блока оба светодиода включены.
1) Выключение блока происходит три раза в течение 1 минуты после пуска компрессора.
2) Выключение блока происходит три раза в течение 3 минут после пуска блока при неисправности конвектора или несоответствия выпрямленного напряжения.
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