110 Indoor / 110 Outdoor Service Manual
Ver. 1.01
19
CONFIDENTIAL
10-3. Fan motor
Unit Part #
#103
AOS Part #
319143-347
Checkpoint
G
Function
To provide combustion air into the burner chamber and to exhaust flue gas.
Failure events
1. Fan speed failure, causing abnormal sounds with or without combustion
during operation.
2. Unexpected activation caused by the connectors of the fan motor getting
wet.
3. Disconnects out from the bottom of the combustion chamber
Effects on the water
heater if fan motor fails
1. The water heater does not function properly
2. Failure to ignite or abnormal ignition
3. Unstable combustion conditions
Error codes when the fan
motor fails
10 11 12 61 99
Diagnostic
1. Visual inspection: connection/breakage of wires or dust (causing electrical
shortage)
2. Voltage check: proper range of voltages shown below.
Color/Number of wires
Red-Blue
110 to 160 VDC (Input)
Yellow-Blue
13 to 17 VDC (Input)
Orange-Blue
2.0 to 6.5 VDC (Input)
White-Blue
Verify the fan motor speed using the Diagnostics Mode of
the 9007666005 temperature
remote controller. See
Section 12-1 for details.
Fan damper (#115 / 319143-160)
PWN multi blade fan motor
The fan damper
is not included in
319143-347.
5 - 7 / 8 " ( 1 5 1 m m )
3
-
1
/
4
"
(
8
6
m
m
)
46
5
-
3
/
8
"
(
1
3
7
m
m
)
"4 6 " m a r k
O
p
e
n
i
n
g
1
-
3
/
4
"
(
4
6
m
m
)
1- 1
/ 4 "
( 3
3m m
)
