Service manual
21
9.6.6 Indoor evaporator high-temperature protection at heating mode
Condition (T= Indoor exchanger temp.) Compressor
T<48
℃
On
53
℃
<T<63
℃
Decrease frequency of compressor
T>63
℃
Off
9.7 Defrosting operation (Available for heating mode only).
9.7.1 Defrosting condition:
9.7.1.1
When outdoor temp. is higher than 0
℃
,
Defrosting starts when meeting one of the following conditions,
a. The temperature of outdoor heat exchanger remains consecutively lower than 3°c for more
than 40 minutes, and the temperature remains consecutively -4°c for more than 3 minutes,
b. The temperature of outdoor heat exchanger remains consecutively lower than 3°c for more
than 80 minutes, and the temperature remains consecutively -2°c for more than 3 minutes
9.7.1.2
When outdoor temp. is lower than 0
℃
,
Defrosting starts when meeting one of the following conditions,
a. The temperature of outdoor heat exchanger remains consecutively lower than 3°c for more
than 40 minutes, and the temperature remains consecutively -6°c for more than 3 minutes,
b. The temperature of outdoor heat exchanger remains consecutively lower than 3°c for more
than 40 minutes, and the temperature remains consecutively -6°c for more than 3 minutes,
c. The temperature of indoor unit pipe decreases 5°c than before
9.7.1.3
The temperature of outdoor heat exchanger remains consecutively lower than 3°c for more
than 120 minutes, and the temperature remains consecutively -2°c for more than 3 minute
s
9.7.2 Ending condition of defrosting
If one of following conditions is satisfied, end the defrosting and turn into heating mode:
a. The defrost time has reached to 10 minutes.
b. When the temperature of outdoor heat exchanger rises up to 8°C and this continues for more than 80
seconds.
c. When the temperature of outdoor heat exchanger rises up to 12°C
9.7.3 Defrosting Actions:
9.7.4 Rated capacity test
Set mode to heating mode
Set temp. to 30 °C
Set fan speed to high speed
Press economy button on remote controller
After 5 hours, the rated capacity testing will be cancelled.
max. 10 minutes
60s
ON 10s 30s
Com. OFF
ON ON
4 way valve OFF
ON ON
Outdoor fan OFF
ON ON
Indoor fan
OFF
Breeze 10 seconds, then stop
