Noritz NRC661-DV, Service Manual, Page: 32 / 78

32
YES NO
Normal (Not activated)
Normal (Not blown)
Check the current fuse (10A).
Che ck the activation of the indoor
distribution board breaker.
* Unplug the power cord when checking.
* If the fuse blows again, eliminate
the cause for the excess current.
* If activated again, eliminate
the cause for activation.
Abnormal (Activated)
Turn the breaker on.
Consult power company.
Replace the current fuse (10A).
(AC108 - 132V )
Normal
CN92 : Between White 3 - Black 4
AC108 - 132V
Check for improper connection of wiring, damage,
.t l u a f d n u o r g r o g n it i u c ri c -t r o h s
,
Replace the wiring.
Abnormal
Check the power outlet voltage.
Abnormal
(Blown)
Abnormal
Check the supply voltage of the power circuit board.
Remove the Remote Controller cord .
Check for Remote Controller cord damage, short-circuiting or ground fault,
and if there is no problem replace the Remote Controller.
Normal (DC14 - 16V)
CN89A, CN89B
Abnormal
Chec k the voltage of the Remote
Controller terminals on the Circuit Board .
Display Window
Circuit Board
14
13
12
11
10
9
8
7
6
5
4
3
2
1
12
11
10
9
8
7
6
5
4
3
2
1
3
2
1
W
Y
O
R
BK
V
G
O
Y
W
4
3
2
1
BL
BL
BL
R
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
2
3
4
5
6
7
4 3 2 1
BR Y BL R
R
O
Y
W
BL
R
W
O
GY
BK
W
BL
W
BL
2
1
BL/W
BK BK 4 2
W W
Fuse
Dip Switch
3 1
R/R G
3 2 1
BL
6
5
4
3
2
1
BK
R
W
W
3
2
1 R
BL
G
BL
W
R
Y
BK
BK
W
W
BK
W
<CN63>
<CN135>
<CN78>
<CN59>
<CN142>
<CN104>
<CN27>
<CN92>
<CN101>
<CN10>
<CN75>
<CN102>
<CN89A>
<CN89B>
<CN42>
Main
Circuit
Board
Power
Circuit
Board
Data
Display
1 2 3 4
R BL BL BL
<CN142>
Circuit Board
Display Window
Circuit Board
Fuse
Dip Switch
Data
Display
1 2 3 4
R BL BL BL
<CN142>
Display Window
Circuit Board
Dip Switch
<CN89B>
Data
Display
1 2 3 4
R BL BL BL
<CN142>
* If there is cord damage, short-circuiting or ground fault , replace the remote controller cord.
<CN89A>
WARNING
Beware of electric shock due to
short-circuiting of the 120V circuit.
(Only using the optional Remote Controller)
Check for improper connection of wiring, damage ,
shor t-circuiting or ground f ault.
Chec k the voltage between 2 and 3 on “CN101 ” connector.
Then replace the Circuit Board set.
* It is not necessary to replace the Display Window Circuit Board.
1 2 3
14
13
12
11
10
9
8
7
6
5
4
3
2
1
12
11
10
9
8
7
6
5
4
3
2
1
3
2
1
W
Y
O
R
BK
V
G
O
Y
W
4
3
2
1
BL
BL
BL
R
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
2
3
4
5
6
7
4 3 2 1
BR Y BL R
R
O
Y
W
BL
R
W
O
GY
BK
W
BL
W
BL
2
1
BL/W
BK BK 4 2
W W 3 1
R/R G
3 2 1
BL
6
5
4
3
2
1
BK
R
W
W
3
2
1 R
BL
G
BL
W
R
Y
BK
BK
W
W
BK
W
<CN63>
<CN135>
<CN78>
<CN59>
<CN142>
<CN104>
<CN27>
<CN92>
<CN101>
<CN10>
<CN75>
<CN102> <CN89A>
<CN89B>
<CN42>
Main
Circuit
Board
Power
Circuit
Board
Circuit Board
1 2 3
BK BK 4 2
W W 3 1 <CN92>
14
13
12
11
10
9
8
7
6
5
4
3
2
1
12
11
10
9
8
7
6
5
4
3
2
1
3
2
1
W
Y
O
R
BK
V
G
O
Y
W
4
3
2
1
BL
BL
BL
R
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
2
3
4
5
6
7
4 3 2 1
BR Y BL R
R
O
Y
W
BL
R
W
O
GY
BK
W
BL
W
BL
2
1
BL/W
BK BK 4 2
W W
Fuse
3 1
R/R G
3 2 1
BL
6
5
4
3
2
1
BK
R
W
W
3
2
1 R
BL
G
BL
W
R
Y
BK
BK
W
W
BK
W
<CN63>
<CN135>
<CN78>
<CN59>
<CN142>
<CN104>
<CN27>
<CN92>
<CN101>
<CN10>
<CN75>
<CN102>
<CN89A>
<CN89B>
<CN42>
Main
Circuit
Board
Power
Circuit
Board
Circuit Board
1 2 3
<CN101>
3
2
1 R
BL
G
1. No Error Code
1-1. The set temperature is not displayed on Display Window when electrical power is connected.
Operation indicator does not light when turned on.