Rinnai REU-V1616WF, Service Manual

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Infinity REU-V1616WF - 25 - Issue 1 - 21/11/03 ©Rinnai
16. Component and Circuit Checks
1. Combustion Fan Circuit
Check the Motor
Check the combustion fan if the error indicator displays “61”.
Measure voltages between Black and Red of the PCB connector (A
1
).
Normal: DC15~46V (when fan ON)
DC0V (when fan OFF)
If normal proceed to check the rotation sensor
Faulty: Replace PCB
Check for the Fan Rotation Sensor
a.)
Measure voltages between Black and Yellow of connector (A
1
).
Normal: DC11~13V
If normal proceed to b.).
Faulty: Replace PCB.
b.)
Measure voltages between Black and White of connector (A
1
).
Normal: DC2~10V
If normal proceed to Sparker Circuit 2.
Faulty: Replace Combustion Fan.
2. Sparker Circuit
a.)
Measure voltages between Grey and Grey of connector (C
1
).
Normal: AC90~110V
If Normal proceed to b.).
Faulty: Replace PCB.
b.) Disconnect connector (J
6
) and measure resistance between both terminals of the sparker.
Normal: 1M
Ω
If not sparking, adjust or replace ignition plug.
Faulty: Replace Sparker.