63
Switch
Type
of
switch
Dip
switch
SW1
1
2
No.
Function
Effective timing
Action by the switch operation
Compulsory defrosting
Start
Normal
When compressor is working
in heating operation.
w
Abnormal history clear
Refrigerant address setting
When power supply ON
Clear
Normal
off or operating
SW4
1
6
5
4
3
2
Test run
Operating
OFF
Under suspension
Test run mode setting
Heating
Cooling
ON
OFF
1 2 3
0
1
2
3
4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3
4
5
6
7
4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3
8
9
10
11
4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3
12
13
14
15
4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
Compulsory defrosting should be done as follows.
1
Change the DIP SW1-1 on the outdoor controller board from OFF to ON.
2
Compulsory defrosting will start by the above operation
1
if these conditions written below are satisfied.
• Heat mode setting
• 10 minutes have passed since compressor started operating or previous compulsory defrosting finished.
• Pipe temperature is less than or equal to 8
:
.
3
Compulsory defrosting will finish if certain conditions are satisfied.
w
Compulsory defrosting can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON.
After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again. This
depends on the service conditions.
11-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS
(1) Function of switches
OC294-D-3.qxp 05.3.9 11:04 AM Page 63
