93
16.5.5 Service Valve Error (H27)
Malfunction Decision Conditions:
During cooling operation, when:-
[a] Indoor refrigerant pipe temperature at compressor startup - present indoor refrigerant pipe temperature < 2°C
[b] Present high pressure - high pressure at compressor startup < 5kg/cm²
**Judgment only for first time cooling operation and not during pump down operation.
Malfunction Caused:
1 3 way valves closed.
2 Faulty high pressure sensor.
3 Faulty indoor refrigerant pipe temperature sensor
4 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue for 5 minutes.
Summary of Contents for WH-MHF09G3E8
Page 32: ...32 10 1 2 Solar Printed Circuit Board Optional ...
Page 33: ...33 10 2 Refrigerant System 10 2 1 Main Printed Circuit Board ...
Page 34: ...34 10 2 1 1 Noise Filter Printed Circuit Board ...
Page 47: ...47 Heat Mode Operation Time Chart ...
Page 49: ...49 ...
Page 50: ...50 ...
Page 56: ...56 ...
Page 57: ...57 ...
Page 58: ...58 ...
Page 127: ...127 17 3 To Remove The Cabinet Rear Plate 17 4 To Remove Pressure Gauge 17 5 To Remove RCCB ...
Page 138: ...138 19 2 Water System 44 46 17 16 4 34 42 18 43 3 33 9 1 45 45 47 2 35 48 36 19 ...