Defrosting Mode (Available For Heating Mode) - Carrier 38 KCL018R33 Service Manual

Room temp. down
8.7.6 Indoor evaporator high-temperature protection at heating mode
(T=indoor exchanger temp.)
8.7.7 The louver opens to Standard Angle ANGLHEAT when power is on for the first time

8.8 Defrosting mode (available for heating mode)

Defrosting condition: Defrosting starts when either of the following $` &$a :
8.8.1
$` A and B are satisfied:
A: The compressor keeps running for 40 minutes or more.
B: The temperature difference of evaporator and room temperature meets one of the following:
$a Calculate from the end of latest defrost, evaporator high temp. Protection only closes outdoor fan with the
compressor still running. Add up to 90 minutes.
8.8.2 Defrosting time
At condition $`, If item B is satisfied before item A, it would be regarded as severe frosting and the defrosting
time is 10 minutes. If item B is satisfied after item A, the defrosting time is 7.5minutes.At condition $a, the
defrosting time is 10 minutes.After three times continuous 7.5-minute defrost, the fourth defrost time should be
10 minutes.
The circulation is as following:
Defrost 7.5min
22
Service manual
Med fan
0
2
Defrost 7.5 min Defrost 7.5min
Low fan
Room temp. up
T-Ts
defrost10min