Haier HR18D2VAR - Defrosting Operation

5. Defrosting operation
Note: The defrost action will be end when defrost has worked for 10 minutes or when the piping
temp. arrives at or more than 50 .
no
no
no
no
no
the compressor runtime>180min
yes
go to defrost
go to defrost
yes
yes
180min>the compressor
runtime>120min
go to defrost
yes
yes
120 min>the compressor
runtime>90 min
go to defrost
yes
Tp-Tp0<23 for 3 min
yes
90 min > the compressor
runtime>60min
60 min > the compressor
runtime>30min
yes
Tp-Tp0<
17.6
for 3 min
yes
go to defrost
yes
yes
yes
yes
30 min > the compressor
runtime>15min
yes
Check and reconnect
no
record Tp0 after compressor on for 8 min
heat pump mode
Tp-Tp0<23 for 3 min
or Tp<
10.4 for 3 min
Tp-Tp0<26.6 for 3 min
or Tp<
10.4 for 3 min
5.1 Defrosting procedure:SW1-1: OFF; SW1-2: OFF
heat pump mode
record Tp0 after compressor on for 8 min
no
Check and reconnect
yes
Is Tp(pipe temp)<
35.6
for 10 sec
30 min > the compressor
runtime>15min
yes
yes
yes
Tp-Tp0<
10.4
for 3 min
yes
go to defrost
go to defrost
yes
Tp-Tp0<17.6 for 3 min
yes
45 min > the compressor
runtime>30min
the compressor
runtime>45min
yes
go to defrost
no
no
5.2 Defrosting procedure:SW1-1: ON; SW1-2: OFF
Is Tp(pipe temp)< ３５．６ for 10 sec
℉
go to defrost
Tp-Tp0< 10．４ for 3 min
℉
(The unit of temp. is )
38
Central Air Conditioning Model: Heat Pump, HR13-D1