Outdoor Fan Motor Operation - Panasonic CS-25XKE Service Manual

ii. Auto Fan Speed
[Cooling, Dry]

According to room temperature and setting temperature, indoor fan speed is determined automatically.

When set temperature is not achieved, the indoor fan will operate according to pattern below.
Fan
Speed
a
Higher
Medium
Lower

When set temperature achieved, the indoor fan speed will be fixed. When thermostat off, the fan stop periodically.
[Fan]

Indoor fan speed is fixed at predetermined speed.
[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.
Compressor:
Outdoor Fan:
b c d
RPM Increased
o
39 C
RPM Reduced
o
19 C
OFF
Indoor Pipe Temp.
ON
Fan Speed
ON
30 sec
[1 pattern : 10 s]
e f g
RPM Maintain
o
35 C
o
16 C
OFF
OFF
65
h a b
ON
ON