Component And Circuit Checks - Rinnai REU-V1620WG Service Manual

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).
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).
Normal: DC11~13V
If normal proceed to b.).
Faulty: Replace PCB.
b.)
Measure voltages between Black and White of connector (A).
Normal: DC5~10V
If normal proceed to Sparker Circuit 2.
Faulty: Replace Combustion Fan.
2. Sparker Circuit
a.)
Measure voltages between Grey and Grey of connector (C
Normal: AC90~110V
If Normal proceed to b.).
Faulty: Replace PCB.
b.) Disconnect connector (C
Ω
Normal: 1M
If not sparking, adjust or replace ignition plug.
Faulty: Replace Sparker.
3. Main Solenoid Valve (SV
Check the main solenoid if error indicator "11" is displayed.
a.)
Disconnect Main Solenoid connector (E
Normal: 1.7 ~2.1k
If normal, proceed to
Faulty: Replace Main Solenoid.
b.)
Measure voltage between Pink-Black of Main Solenoid connector.
Normal: DC80~100V
If normal, proceed to Solenoid Valve SV
Faulty: Replace PCB.
Infinity REU-V1616W / REU-V1620W / REU-V2018W / REU-V2020W- 26 -
) and measure resistance between both terminals of the sparker.
1
) Circuit
1
) and measure resistance between Pink and Black
1
Ω
b
.).
2
).
1
Issue 2 - 21/03/06 ©Rinnai