Carrier 42QHF009DS - Page 50

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4
3
High
Low
1
Medium
(3) Anti-freezing control to indoor evaporator in cooling mode
Evaporator Temp.
Compressor
Console,
A5 duct
T2≤ 4℃
Off
T2> 8℃
On
A3 four-way
cassette
(compact)
T2B<0℃ for 250s
Off
T2B> 10℃
On
The other
types
T2≤ 3℃
Off(After 3 minutes)
T2> 7℃
On
(4) PTC function is invalid and sleep mode can be set by using a remote controller.
11.7.2.4 Evaporator low temperature T2 protection
When T2<4℃, the indoor has no capacity demand and resume till T2>8℃
11.7.3 Dry mode
11.7.3.1 Indoor fan speed is fixed at breeze and can’t be changed. The louver angle is the same as in
cooling mode.
11.7.3.2 Low indoor room temperature protection
In drying mode, if room temperature is lower than 10℃, the indoor fan will stop and not resume until room
temperature exceeds 12℃.
11.7.3.3 Evaporator anti-freezing protection and condenser high temperature protection are active and the
same as that in cooling mode.
11.7.3.4 The outdoor fan operates the same as in cooling mode.
11.7.4 Heating mode
11.7.4.1 Compressor running rules
The compressor will run at corresponding frequency according to the gross amendatory capacity demand.
Frequency
0
HEAT_F1
HEAT _F2
……
HEAT_F15
HEAT _F16
Amendatory capacity demand.
0
1
2
……
15
16
11.7.4.2 Outdoor fan running rules