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110
16.4.20 F17 (Indoor Standby Units Freezing Abnormality)
Malfunction Decision Conditions
When the different between indoor intake air temperature and indoor pipe temperature is above 50°F (10°C) or
indoor pipe temperature is below 30.2°F (-1.0°C).
Remark:
When the indoor standby unit is freezing, the outdoor unit transfers F17 error code to the corresponding indoor
unit and H39 to other indoor unit(s).
Malfunction Caused
Wrong wiring connection
Faulty
sensor
Faulty expansion valve
Troubleshooting
When F17 indication happens.
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.
Check the system wiring connection.
Is the wiring connection ok?
Check the indoor intake air and indoor pipe temperature
sensors.
Does it conform to the sensor characteristic chart?
Check the expansion valve.
Is the expansion valve ok?
Perform Auto Wiring to correct the wiring
connection.
Replace the indoor intake air or indoor pipe
temperature sensor.
Replace the solenoid coil or expansion
valve.
Replace outdoor unit PCB.
NO
NO
NO
YES
YES
YES
Caution
Содержание CS-XE12WKUAW
Страница 45: ...45 10 1 5 Nanoe X Printed Circuit Board ...
Страница 122: ...122 17 1 1 5 To Remove Cross Flow Fan and Indoor Fan Motor Figure 9 Figure 10 Figure 11 ...
Страница 123: ...123 Figure 12 ...