Dehumidifying Mode; Heating Mode - Fisher FSArt-70HF Service Manual

Condenser high temperature protection (only for heat pump)

7.7 Dehumidifying mode

Indoor fan speed at low speed.
Protection is same as cooling mode.

7.8 Heating mode

7.8.1 Generally, the 4-way valve is open in heating mode, but it is closed in defrosting mode. 4-way valve must delay 2
minutes compared with compressor if the compressor changed into non-heating mode or turned off. 4-way valve doesn't
delay in dehumidifying mode.
7.8.2 Generally, the outdoor fan is turned off with the on-off action of compressor in heating mode, except for the defrosting
mode or the end of defrost.
7.8.3 Action of compressor and outdoor fan motor at heating mode: compressor must run for 7 minutes after starting and
then judge temperature. Meanwhile other protections are still valid.
* This parameter can be changed from 0 to 3
25