Panasonic WH-MXF09D3E8 Service Manual page 82
Mono bloc air-to-water heatpump system
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Also See for WH-MXF09D3E8:
- Service manual (125 pages) ,
- Operating instructions manual (76 pages) ,
- Design handbook (132 pages)
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16.5.13 Outdoor High Pressure Protection (H98)
Malfunction Decision Conditions:
During operation of heating, when pressure 4.0 MPa and above is detected by outdoor high pressure sensor.
Malfunction Caused:
1. Faulty water pump.
2. Insufficient water flow rate in system.
3. Water leak in system.
4. 2/3 way closed.
5. Clogged expansion valve or strainer.
6. Excessive refrigerant.
7. Faulty outdoor high pressure sensor.
8. Faulty outdoor unit PCB (main).
82
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