Outdoor de-ice
After 40 minutes of continuous heating operation, if To
-4 , the outdoor de-ice
operation is activated. Compressor is turned off. Indoor fan speed reduces to low
speed. After 30 seconds delay, 4 way value and outdoor fan will be turned off, indoor
fan reduces to low speed, 15 seconds later, the compressor is turned on and indoor fan
turn off for the de-ice operation, if To
15 or 10 minutes has elapsed, the de-ice
operation will be terminated. Then, the compressor is turned off. After 30 seconds
delay, 4 way valve and outdoor fan are turned on, 15 seconds later, compressor and
outdoor fan are turned on for return to normal operation, indoor fan is turned on for
return to normal operation also.
C
C
4WV
COMPRESSOR
30S
15S
MAX 10 MINS
HEAT MODE
If Tr < Ts, heat operation is activated. Compressor and outdoor fan are turned on.
If Tr
Ts + 1 , heat operation is terminated. Compressor and outdoor fan are
turned off.
The range of Ts is 16 - 31 .
Indoor fan speed can be adjusted for low, medium, high and auto.
Compressor will delay for 3 minutes before it is turned on or off.
C
C
Compressor will delay for 3 minutes before it is turned on or off.
HEAT MODE
OPT
-4
15C
C
DE-ICE
INDOOR FAN
OUTDOOR FAN
30S
15S
DRY MODE
If Tr
15 , dry operation is activated. Compressor and outdoor fan are
turned on interval.
C
If Tr
23 , Compressor and outdoor fan are operating in sequence as follows:
See A of fig1 If Tr<23 Compressor and outdoor fan are operating in sequence
as follows: see B of FIG1.
C
C
Tr
23
Tr 23
<
C
C
OUTDOOR FAN
INDOOR FAN
COMPRESSOR
8mins 3mins
4mins
1min
2mins 3mins
8mins
1min
2mins 4mins
1min 1min
Fig.1
A
B
CONTROLS SPECIFICATION
5
5
