Panasonic WH-MDC09C3E8 Service Manual page 93
Monobloc air-to-water heatpump system
Hide thumbs
Also See for WH-MDC09C3E8:
- Service manual (139 pages) ,
- Operating instructions manual (92 pages) ,
- Design handbook (132 pages)
Table of Contents
Advertisement
16.5.14 Indoor Freeze-up Protection (H99)
Malfunction Decision Conditions:
During anti-freezing control in cooling operation, when the indoor refrigerant liquid temperature < 0°C.
Malfunction Caused:
1
Faulty water pump.
2
Insufficient water flow rate in system.
3
Water leak in system.
4
2 way valve partially closed.
5
Clogged expansion valve or strainer.
6
Refrigerant shortage (refrigerant leakage).
7
Faulty indoor refrigerant liquid temperature sensor.
8
Faulty indoor unit PCB (main).
93
Advertisement
Table of Contents
