Gree GKH12K3BI, Service Manual

Page: 35 / 209

32
U-MATCH Air
Conditioners
Service Manual
DPOUSPM
2.3 Heating Mode
1S 20S 10S 15S 45S 60S
Compressor
Outdoor fan
Indoor fan
4-way valve
Starting up Manual shutdown
Time
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
ON
Heating Mode
Operation at
a set speed
Operation in blowing
after heat state
Operation under
normal conditions
Cold blast
prevention
Auxiliary heating
When T
amb.
”7
preset
-1
o
C, the unit begins heating operation and the compressor and the outdoor fan are
running; and the indoor fan is running at a set speed according to cold fan prevention conditions.
When T
amb.
•7
preset
+1
o
C, the compressor and the outdoor fan stop running and the four-way valve keeps
energized; and the indoor fan is running according to afterheat blowing conditions.
When T
Set
-1
o
C< T
amb.
< T
preset
+1
o
C, the unit keeps in the previous operation state.
2.4 Defrosting
1S
10S
10S
Defrosting
Time
Cold blast
prevention
Compressor
Outdoor fan
Indoor fan
4-way valve
Auxiliary heating
ON
ON
OFF
ON
OFF
OFF
OFF
ON
ON ON
ON
ON
ON
Enter the
defrosting mode
Withdraw the
defrosting mode
Operation at
a set speed
Operation under
normal conditions
Defrosting start conditions: after the heating operation runs for an accumulated period of 44 minutes and
the compressor continues to operate for 4 hours and 50 seconds, and a one-minute duration of T
cond.
”
o
Cis
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seconds, the four-way valve, the indoor fan, the outdoor fan and the compressor will run compulsively.
Defrosting completion conditions: when defrosting runs 10 minutes or T
cond.
•
o
C, defrosting will be
completed. In such case, the four-way valve is running, the outdoor fan is running, the compressor is running
compulsively, and the indoor fan operates according to cooling fan proof conditions.