58
16.5.16. Indoor High Pressure Protection (H98)
Error code will not display (no TIMER LED blinking) but store in EEPROM
Malfunction Decision Conditions:
During operation of heating, pressure 4.0 MPa and above is detected by outdoor high pressure sensor.
Malfunction Caused:
1. Dust accumulation on the indoor unit heat exchanger.
2. Detection error due to faulty indoor pipe temperature sensor.
3. Detection error due to faulty indoor unit PCB.
Summary of Contents for WH-UD28AE
Page 10: ...10 4 Location of Controls and Components 4 1 Indoor Unit 4 1 1 Location of Control ...
Page 11: ...11 ...
Page 12: ...12 4 1 2 Main Components 4 2 Outdoor Unit ...
Page 13: ...13 5 Dimensions 5 1 Indoor Unit ...
Page 14: ...14 5 2 Outdoor Unit ...
Page 16: ...16 7 Block Diagram ...
Page 17: ...17 8 Wiring Connection Diagram 8 1 Indoor Unit ...
Page 18: ...18 8 2 Outdoor Unit ...
Page 19: ...19 9 Electronic Circuit Diagram 9 1 Indoor Unit ...
Page 20: ...20 9 2 Outdoor Unit ...
Page 21: ...21 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board ...
Page 22: ...22 10 2 Outdoor Unit 10 2 1 Main Printed Circuit Board ...
Page 23: ...23 10 2 2 Capacitor Printed Circuit Board 10 2 3 Noise Filter Printed Circuit Board ...
Page 68: ...68 17 3 To Remove Pressure Gauge 17 4 To Remove Control Panel ...
Page 69: ...69 17 5 To Remove Electronic Controller Board and Transformer 17 6 To Remove RCCB ...
Page 71: ...71 When reinstall the water pipe use grease or water at the joining ...
Page 79: ...79 19 2 WH UD24AE WH UD28AE ...
Page 80: ...80 ...