Outdoor Unit Heating Cable Function (Option) - Fisher FSIArt?100HFD Service Manual

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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