Outdoor Fan Motor Operation - Panasonic CS-Z35UFRAW Service Manual

[Heating]

According to indoor pipe temperature, automatic heating fan speed is determined as follows.
B. Feedback control

Immediately after the fan motor started, feedback control is performed once every second.

During fan motor on, if fan motor feedback ≥ 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor error
counter increase, fan motor is then stop and restart. If the fan motor counter becomes 7 times, then H19 - fan
motor error is detected. Operation stops and cannot on back.

14.3 Outdoor Fan Motor Operation


It starts when compressor starts operation and it stops 30 seconds after compressor stops operation.

During cooling operation, and outdoor ambient temperature is below 8°C, outdoor fan speed will be controlled
according to outdoor piping temperature as following:

During above condition, when indoor heat exchanger temperature is below 5°C, the outdoor fan will stop
according to outdoor piping temperature as following:
RPM Increased
o
40 C
RPM Maintain
RPM Reduced
o
19 C
OFF
Indoor Pipe Temp.
OD Pipe Temperature
A
B
74
o
35 C
o
16 C
26°C
33°C