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8.2.2.2 Condition for the compressor and outdoor fan action: (Ts=set temperature,
T1=room temperature)
8.2.2.3 Indoor Fan Action
Auto fan in heating mode
8.2.2.4 Anti-cold air:
Switchover between fan speed and fine tune can be set according to temperature of
evaporator pipe (T2).
8.2.2.5 Electric heaters
(only available to some modes)
Electric heaters only opens in heating mode
8.2.3 Defrost (only available to heating mode)
8.2.3.1 Defrosting Conditions
Starting Of Defrosting Condition (meet one of the following is ok):
(1) Under evaporator high temperature protection, the accumulated time when
outdoor fan motor is off and compressor is on reaches up to over 90 minutes. ( IF
compressor shuts down , calculate time again).
(2) Accumulated compressor operating time when temperature of outdoor heat
exchanger coil T3 is below -2°C reaches up to over 40 minutes. ( IF compressor shuts
down , calculate time again).
Condition
Compressor and outdoor fan( High)
Ts-T1
≥
1°C and compressor is off
reaches up to over 4 minutes
On
T1-Ts>2°C
Off
Condition
Fan speed
Ts-T1
≥
4°C
High
2°C
≤
Ts-T1 < 4°C
Med
Ts-T1 < 2°C
Low
Condition
Fan speed
Room temperature up
T2<25°C
Off
25°C <T2<32°C
Breeze
T2>32°C
Set fan speed
Room temperature down
T2>30°C
Set fan speed
30°C >T2>20°C
Breeze
T2<20°C
Off
Condition
Electric heaters
Ts-T1 > 6°C and indoor fan opens,T2 < 50 °C
On
T1
≥
Ts or indoor fan closes or T2 > 52 °C
Off