Infinity REU-VRM3237WG / HD250e REU-VRM3237WC
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19
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Issue 1 - 19/05/09 ©Rinnai
16. Component and Circuit Checks
1.
Combustion Fan Circuit (B
1
)
• Check the Motor
• Check the combustion fan if the error indicator displays “61”.
• Measure voltages between Black and Red of the PCB connector (B
1
).
Normal:
DC6~45V (when fan ON)
DC0V (when fan OFF)
If normal proceed to check the rotation sensor
Faulty: Replace PCB
2.
Check for the Fan Rotation Sensor
a.) Measure voltages between Black and Yellow of connector (B
1
).
Normal:
DC11~13V
If normal, proceed to b).
Faulty:
Replace PCB.
b.) Measure voltages between Black and White of connector (B
1
).
Normal:
DC6~45V
If normal, proceed to Sparker Circuit 2.
Faulty:
Replace Combustion Fan.
3.
Igniter Circuit (C
1
)
a.) Measure voltage between Grey and Grey of connector (C
1
).
Normal:
AC207-264V
If normal, proceed to b).
Faulty:
Replace PCB.
b.) Disconnect connector (C
1
) and measure resistance between both terminals of the
sparker.
Normal:
> 1M
If normal and not sparking adjust or replace ignition plug.
Faulty:
Replace Sparker.
