Carrier 38KCR009713 - Heating Mode

Service manual
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8.7 Heating mode
8.7.1 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
8.7.2 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
8.7.3 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.
Ts+2*
T
Room temp. up
Room temp. down
Ts+3*
Compressor and
outdoor fan off
Compressor and
outdoor fan on
Ts
* This parameter can be changed from 0 to 3
8.7.4 Indoor Fan actions at heating mode
Indoor Fan can be set at HIGH/MID/LOW/AUTO by using a remote controller, but Anti-cold wind function
prevails.
Anti-cold wind control function at heating mode (T=indoor exchanger temp.)
T
T temp. up
T temp. down
TE2
Setting fan speed
Fan off
Breeze
TE3
TE1
TE4
8.7.5 Auto wind at heating mode (T=indoor temp.)