Air Conditioner Service Manual
8
Defrosting time chart
Outdoor Fan ON OFF ON
Revering Valve ON OFF ON
Compressor Relay ON OFF ON OFF ON
39S 5S Defrost Count MAX 12min 19S 15S t
6. “FAN” mode operation
The indoor fan motor always turns on at the set speed and the vane motor turns on at the set fettle.
7. 4-way Valve control
HEATING ON
COOLING/DRY OFF
The 4-way valve reverses for 5 seconds right before start-up of the compressor as following chart:
COOLING/DRY TO HEATING HEATING TO COOLING/DRY
Compressor
4-way Valve
5s 2min
Outdoor Fan
8. Assistant Heater
1) The heater mode is automatically controlled.
2) The condition of the heater ON. (must accord with the following conditions)
a. The compressor has operated over 10 minutes.
b. The indoor fan motor has operated at normal over 15 minutes.
c. Not at the defrosting.
d. The heater latest off was over 30 seconds.
e. ST-RT≥3℃。
f. RT＜22℃.
g. IPT≤43℃
3) The condition of the heater OFF. (accord with one of the following condition)
a. The compressor off.
b. RT≥24℃.
c. IPT≥48℃
d. Indoor motor off.
e. Enter the sleep mode.
9. “SLEEP” mode
When the SLEEP button is pressed, the SLEEP mode is selected as following:
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