How To Cope With Test Run Abnormality - Mitsubishi Electric CITY MULTI PUHY-P-YMF-B Installation Manual

12.3. How to cope with test run abnormality

1 A 4-digit check code is displayed on remote controller display panel if unit is stopped due to an abnormality. Check to see causes of that
abnormality.
1. Indoor unit
Check code
2500 Leakage (water) abnormality
2502 Drain pump abnormality
2503 Drain sensor abnormality
4116 Fan speed abnormality (motor abnormality)
5101
Thermal sensor
5102
abnormality
5103
6600 Multiple address abnormality
2. Outdoor unit
Check code
0403 Serial transmission abnoramlity
1102 Discharge temperature abnormality
1111 Low pressure saturation temperature sensor
abnormality (TH2)
1112
Low pressure
saturation
temperature
1113
abnormality
1301 Low pressure abnormality
1302 High pressure abnormality
1500 Overcharged refrigerant abnormality
1501 Low refrigerant abnormality
1505 Suction pressure abnormality
4103 Reverse phase abnormality
4108 Overcurrent protection (51C2)
4115 Power supply sync signal abnormality
4200 VDC sensor/circuit abnormality
4210 Breaking of overcurrent
4220 Bus voltage abnormality
4230 Radiator panel overheat protection
4240 Overcurrent protection
4260 Cooling fan abnormality
Check Content
Air inlet (TH21)
Liquid pipe (TH22)
Gas pipe (TH23)
Check Content
Liquid level sensing temperature
sensor abnormality (TH4)
Liquid level sensing temperature
sensor abnormality (TH3)
Check code
6602 Transmission processor hardware abnormality
6603 Transmission circuit bus-busy abnormality
6606 Communications with transmission processor abnormality
6607 No ACK abnormality
6608 No response abnormality
7101 Capacity code abnormality
7111 Remote control sensor abnormality
Check code
5101
5102
5103
5104
5105
Thermal sensor
5106
abnormality
5107
5108
5109
5110
5114 Compressor shell temperature (TH10)
5201 Pressure sensor abnormality
5301 IDC sensor/circuit abnormality
6600 Multiple address abnormality
6602 Transmission processor hardware abnormality
6603 Transmission circuit bus-busy abnormality
6606 Communications with transmission processor abnormality
6607 No ACK abnormality
6608 No response abnormality
7100 Total capacity abnormality
7101 Capacity code abnormality
7102 Connected unit count over
7105 Address setting abnormality
Check Content
Check Content
Discharge (TH1)
Low pressure saturation (TH2)
Accumulater liquid level (TH3)
Accumulater liquid level (TH4)
Liquid pipe (TH5)
Ambient temperature (TH6)
SC coil outlet (TH7)
SC coil bypass outlet (TH8)
SC coil bypass inlet (TH9a)
CS circuit liquid temperature (TH9b)
Radiator panel
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