Electric Control Working Environment; Protection Function; Operation Of Fan Motor - Midea MP12HMB63 Service Manual

7.2 Electric Control Working Environment

Input voltage: 265V, 60Hz; 230/208V, 60Hz

7.3 Protection Function

•
The compressor protection functions with a delay of 3
minutes.
•
Sensor protection at open or short circuit of sensor.
•
Evaporator anti-freezing protection in cooling mode.

7.4 Operation of Fan Motor

7.4.1 Fan motor is on when compressor is on. Fan motor is off when compressor is off.
(Except the T2 high Temp. protection.)
If there is only one speed for the fan motor, use the high speed instead of the low speed.
7.4.2 The fan motor operating in cooling only mode (see Fig. A).
•
If T4>T01 and lasts for 1 minute, the fan motor will operate at high speed.
•
If T4<T02 and lasts for 1 minute, the fan motor will operate at low speed.
• If T02≤T4≤T01:
o If fan motor was initially off, it will operate at high speed.
o If fan motor was initially on, it will keep operating at initial speed.
T4 Operate on high speed
T01
T02
Operate on low speed
Fig. A
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