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B
Check the current fuse.
Normal (Not blown)
Check the voltage at the remote controller terminal.
Normal (DC13 - 16V)
Remove the remote controller cord.
* Unplug the power cord when checking.
Abnormal
(Blown)
Abnormal
Remote controller
terminal
Check the voltage of the remote
controller on the circuit board.
Normal
CN89 : Between Blue1 - Blue3
CN102:Between Blue3-Red4
DC 13 - 16V
1
BL
2
BL
3
BL
<CN89>
Check for remote controller cord damage, short-circuiting or ground fault,
and if there is no problem replace the remote controller.
- 25 -
Circuit Board
POWER
CIRCUIT
BOARD
<FUSE 10A>
Lightning protection's
Transformer
Relay wiring
Power cord
Check point
To anti-frost heater
Replace the current fuse .
Check for improper connection of wiring,
Abnormal
damage, short-circuiting or ground fault,
then replace the circuit board set.
Circuit Board
<CN42>
MAIN
W
4
1
BK
CIRCUIT
5
2
<CN101>
6
3
BOARD
BL
6
1
R
R
7
2
BL
8
3
G
W
9
4
W
O
10
5
Y
1
BK
2
3
W
4
5
W
6
BL
1
W
7
2
BR
W
8
GY
3
W
9
BK
4
W
10
O
5
W
11
6
W
12
W
7
W
<CN10>
<CN63>
POWER
CIRCUIT
BOARD
4
3
2
1
R
BL
G
<CN102>
Check for the remote controller terminal
damage, disconnection of wiring, short-
circuiting or ground fault, then replace the
remote controller terminal.
* If there is cord damage, short-circuiting or ground fault,
replace the remote controller cord.
4
3
2
1
7
R
BL
G
6
W
<CN102>
5
Y
4
3
2
W
1
O
<CN104>
4
BR
3
Y
2
BL
1
R
<CN27>
7
6
5
4
3
BK
3
2
2
1
W
1
<CN92>
<CN103>
<FUSE 10A>
Relay wiring
To PCB
Fuse (5A)
* If the fuse blows again, eliminate
the cause for the excess current.
<CN186>
1
R
2
BK
3
W
4
G
5
BL
6
BL
W
31
32
1
BL
R
29
30
2
V
27
28
BK
<CN78>
O
25
26
G
W
23
24
BK
21
22
19
20
V
BL
17
18
G
O
15
16
O
13
14
BL
11
12
9 10
Y
7 8
R
1
BL
Y
5 6
Y
2
BL
1
2
3
R
3 4
BK
3
BL
BK
1 2
W
<CN38>
<CN89>
<CN197>
4
3
2
1
7
R
BL
G
6
W
<CN102>
5
Y
4
3
2
W
1
O
<CN104>
4
BR
3
Y
2
BL
1
R
<CN27>
7
6
5
4
3
BK
3
2
2
1
W
1
<CN92>
<CN103>
<FUSE 10A>
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