Carrier 42/38KCR024713 Service Manual page 21

Auto fan at cooling mode:
Room temp. down
Anti-freezing control to indoor evaporator at cooling mode ( T: evaporator temp. )
EVAP. temp. down
Compressor and outdoor
fan off (after 5 mins)
Condenser high temperature protection (only for heat pump)
COND. temp. down
Compressor and outdoor
fan off (after 5 mins)
8.7 Dehumidifying mode
Indoor fan speed at low speed.
Protection is same as cooling mode.
8.8 Heating mode
8.8.1 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.
8.8.2 Generally, the outdoor fan is turned off with the on-off action of compressor in heating mode, except for the
19
Mid. fan
Low fan
1
TE5
TE11
Service manual
4 5
T-Ts
Compressor and
outdoor fan on
EVAP. temp. up
TE6
Compressor and
outdoor fan on
COND. temp. up
TE10
High fan
Room temp. up
T
T