Error Code List; M-Net Error Code - Mitsubishi Electric AG-150A Instruction Book

15. Error code list

Notes:

15-1 M-NET error code

The following is a list of the error codes and their meaning. (A) indicates A-control units
0100 "Blanket unit error"
01*0 "Equipment abnormality *"
0403 "Serial transmission trouble"
0404 Indoor unit EEPROM abnormality (A)
0701 Combustion circuit abnormality (A)
0702 Overheat protection for the combustion heat exchanger (A)
0703 Accidental fire (A)
0704 Heater abnormality (A)
0705 Seismoscope malfunction (A)
0706 Flame current sensor abnormality (A)
0707 Ignition problem (A)
0708 Blower motor rotational speed abnormality (A)
0709 Oil pump circuit abnormality (A)
0900 "Test run"
1000 "Ref.cycle abnormality"
10*0 "Ref.cycle abnormality in line *"
1102 Discharge temperature abnormality (TH4) (A)
1108 Inner thermo (49C) trip (A)
11** "Ref.cycle temperature abnormality - Common operand: **"
12** "Ref.cycle temperature abnormality allowance - Common operand: **"
1300 Low pressure abnormality (63L trip) (A)
13** "Ref.cycle pressure abnormality - Common operand: **"
14** "Ref.cycle pressure abnormality allowance - Common operand: **"
1500 "Ref.cycle not operate due to overcharge"
1501 "Ref.cycle not operate due to undercharge" (/compressor shell temperature abnormality)
1502 "Ref.cycle not operate due to liquid back" /Low pressure abnormality (63L trip) (A)
1503 "Ref.cycle not operate due to coil frost"
1504 "Ref.cycle not operate due to overheat protection"
1505 "Ref.cycle not operate due to compressor vacuum operation protection/refrigerant low temperature abnormality"
1506 "Ref.cycle not operate due to refrigerant pump abnormality"
1507 "Ref.cycle not operate due to composition detection abnormality"
1508 "Ref.cycle not operate due to control valve fault"
1509 "Ref.cycle not operate due to high pressure abnormality (ball valve closed) "
1510 "Ref. cycle gas leakage"
1511 "Ref.cycle not operate due to oil slick abnormality"
1512 "Ref.cycle not operate due to a stop of freezing protection function"
1513 "Ref.cycle brine freezing"
1559 "Oil balance circuit abnormality"
1600 "Ref.cycle - Preliminary overcharge refrigerant trouble"
1601 "Ref.cycle - Preliminary lacked refrigerant trouble"
1605 "Ref.cycle - Preliminary suction operation protection"
1606 "Ref.cycle - Preliminary gas pump abnormality"
1607 "Ref.cycle - Preliminary CS circuit closed detection abnormality"
1608 "Ref.cycle - Preliminary control valve abnormality"
1659 "Ref.cycle - Preliminary oil balance circuit abnormality"
2000 "Water system abnormality" (Pump interlock abnormality)
20*0 "Water system abnormality in line *"
21** "Water system temperature abnormality - Common operand: **"
22** "Water system temperature abnormality allowance - Common operand: **"
23** "Water system pressure abnormality - Common operand: **"
24** "Water system pressure abnormality allowance - Common operand: **"
2500 "Water system not operate due to water leak"
• The list below contains all error codes. Some of these error codes may not be applicable
to the system to which the PAC-YG50ECA is connected.
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