Outdoor Heating Cable - Midea MSY-09HRDN1-QC8 Service Manual

When the follow me function is available, the PCB will control the unit according to the room
temperature (T1) from the remote controller and the setting temperature (TS), and the action of
compressor is as following:
At cooling mode, if T1＜TS, compressor is off; If T1≥TS, compressor is on.
At heating mode, if T1＞TS, compressor is off; If T1≤TS, compressor is on.
The PCB will take action to the mode change information from remote controller signal, but it will not
affected by the setting temperature.
When the unit is running with follow me function, if the PCB doesn't receive any signal from remote
controller for 7 minutes or pressing FOLLOW ME button again, the follow me function will be turned
off automatically, and the temperature collection function of room temperature sensor will be
available, the PCB will control the unit according to the room temperature detected from its own
room temperature sensor and setting temperature.
8.18 Outdoor heating cable (Optional)
A heating cable can be fixed on outdoor chassis to help deicing and to avoid freezing. Another
heating cable can be fixed around compressor to help starting the compressor. These heating
cables are useful to improve the performance of the air conditioner especially when the outdoor
ambient temperature is very low. The rated power voltage for the heating cables is 220V-240V. The
action of the heating cables is controlled by the PCB. If outdoor temperature is lower than 5℃, the
heating cable will begin to work. If outdoor temperature is higher than 15℃, the heating cable will
stop working.
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