Carrier 38KCR009713 - Defrosting Mode (Available for Heating Mode)

Service manual
23
0
T-Ts
Room temp. up
Room temp. down
2
Low fan
Med fan
8.7.6 Indoor evaporator high-temperature protection at heating mode
(T=indoor exchanger temp.)
T
T temp. up
T temp. down
TE7
Compressor on
Fan on
TE8
TE9
Compressor off
Fan off
Compressor on
Fan off
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)
8.8.1 Defrosting condition: Defrosting starts when either of the following ①&②:
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:
TM def.
TA-TS
TH def.
High fanMed fanLow fan
TL def.
Breeze
② 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 ①, 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 ②, 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: