Mitsubishi Hyper Heat Air Source Heat Pumps Error Codes



0403 Serial communication error
0900 Test run
1102 Discharge temperature fault
1301 Low pressure fault
1302 High pressure fault
1500 Refrigerant overcharge
2500 Drain sensor submergence
2502 Drain pump fault
2503 Drain sensor (Thd) fault
2600 Water leakage
2601 Water supply cutoff
3121 Out-of-range outside air temperature
4102 Open phase
4106 Transmission power supply fault
4115 Power supply signal sync error
4116 RPM error/Motor error
4230 Heatsink overheat protection
4240 Overload protection
4260 Heatsink overheat protection at startup
5106 Temperature sensor fault
5107 Temperature sensor faul
5110 Temperature sensor fault
5701 Loose float switch connector
6201 Remote controller board fault (nonvolatile memory error )
6202 Remote controller board fault (clock IC error )
6600 Address overlap
6602 Transmission processor hardware error
6603 Transmission line bus busy error
6606 Communication error between device and transmission processors
6607 No ACK error
6608 No response error
6831 MA controller signal reception error (No signal reception)
6832 MA remote controller signal transmission error (Synchronization error)
6833 MA remote controller signal transmission error (Hardware error)
6834 MA controller signal reception error (Start bit detection error)
7100 Total capacity error
7101 Capacity code setting error
7102 Wrong number of connected units
7105 Address setting error
7106 Attribute setting error
7110 Connection information signal transmission/reception error
7111 Remote controller sensor fault
7113 Function setting error
7117 Model setting error
7130 Incompatible unit combination





Note:

The last digit in the check error codes in the 4000’s and 5000’s and two-digit detail codes indicate if the codes apply to compressor¬†inverter on fan inverter.
Example
Code 4225 (detail code 108): Bus voltage drop in the fan inverter system
Code 4230 : Heatsink overheat protection in the compressor inverter system

The last digit= 0 or 1 = Compressor inverter system

The last digit= 5 or 6 = Fan inverter system



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