Carrier 42/38KCJ024713, Technical & Service Manual

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Exploded view & spare-part
20
7 Electronic function
7.1 Performance Index
No. Item Index
1 Applicable Voltage Range 185-253V, 342-418V
2 A/C Frequency 50Hz
3 Working environment temperature -7°C- +45°C
7.2 Main data Introduction
Ts : Set temperature,
T1 : Room temperature
T2: Evaporator pipe temperature
7.3 Operation Modes and Functions
7.3.1 Manual Operation
7.3.2 Heating Mode
7.3.2.1 Four-way valve opens at once, while defrosting process closes.
7.3.2.2 Condition for the compressor action: (Ts=set temperature, T1=room
temperature)
7.3.2.3 Indoor Fan Action
Anytime remote switchover for fan speed among high/low/auto, anti-cold air function
takes priority.
Auto fan in heating mode
Anti-cold air:
Switchover between fan speed and fine tune can be set according to temperature of
evaporator pipe (T2).
Condition Compressor and outdoor fan
Room temperature up T1-Ts=0°C Off
T1-Ts>-1°C On
Room temperature down T1-Ts<-1°C On
T1-Ts=0°C Off
Condition Fan speed
Room temperature up T1-Ts>-1°C Low
T1-Ts<-1°C Hi.
Room temperature down T1-Ts<-2°C Hi.
-2°C <T1-Ts <-1°C Low
Condition Fan speed
Room temperature up T2<25°C Off
25°C <T2<32°C Low