Component And Circuit Checks - Rinnai Infinity 32e Service Manual

16. Component and Circuit Checks

1. Combustion Fan Circuit
2. Sparker Circuit
Infinity REU-V3232W /HD250E REU-V3232WC
Infinity 32e and HD70e
Check the Motor
Check the combustion fan if the error indicator
displays "61".
Measure voltages between Black and Red of the
PCB connector (C).
Normal: DC7~45V (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 (C).
Normal: DC10~14V
If normal, proceed to
Faulty: Replace PCB.
b.)
Measure voltages between Black and White
of connector (C).
Normal: DC2~9V
If normal, proceed to Sparker Circuit 2.
Faulty: Replace Combustion Fan.
a.)
Measure voltage between Grey and Black of
connector (J ).
6
Normal: AC90~110V
If normal, proceed to
Faulty: Replace PCB.
b.)
Disconnect connector (J
resistance between both terminals of the
sparker.
Normal: > 1M
If not sparking, adjust or replace ignition
plug.
Faulty: Replace Sparker.
- 26 -
b
.
b
.
) and measure
6
Ω
Issue 1 - 8/09/03 ©Rinnai