Component And Circuit Checks - Rinnai REU-V1620WG Service Manual

14. Component and Circuit Checks

1. Combustion Fan Circuit
a) Check the Motor
b) Check the combustion fan if the error indicator displays "61".
c) Measure resistance between Black-Red of the PCB connector (B
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 resistance between Black-Yellow of connector (B
Normal: DC11~13V
If normal proceed to b.).
Faulty: Replace PCB.
b) Measure resistance between Black-White of connector (B
Normal: DC5~10V (20~400Hz)
If normal proceed to Sparker Circuit 2.
Faulty: Replace Combustion Fan.
2. Igniter Circuit
a) Measure resistance between Grey-Grey of connector (C
Normal: AC207~264V
If Normal proceed to b.).
Faulty: Replace PCB.
b) Disconnect connector (C

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) Measure resistance between Pink-Black wires of main solenoid connector (I
Normal: DC11~13V
If normal, proceed to b.).
Faulty: Replace PCB
b) Measure resistance between Main Solenoid connectors.
Normal: 37~43
If normal, proceed to Solenoid Valve SV
REU-V1620WG / REU-V1620WB / REU-V1620WS / REU-V2024WG - 19 -
) and measure resistance between both terminals of the sparker.
1
)
0

).
1
).
1
).
1
).
1
Faulty: Replace Main Solenoid.
1
)
5
Issue 1 - 6/04/09 ©Rinnai