Rinnai REU-VR3237WG Service Manual page 25

4. Main Solenoid Valve (F
Check the main solenoid if error indicator "11" is displayed.
a.) Disconnect Main Solenoid connector and measure resistance between Pink and Black.

Normal: 37~43
If normal, proceed to b).
Faulty: Replace Main Solenoid.
b.) Measure voltage between Pink-Black of Main Solenoid connector.
Normal: DC11~13V
If normal, proceed to Solenoid Valve F
Faulty: Replace PCB.
4b.Solenoid Valve 1 (F
Check Solenoid 1 if error indicator "11" is displayed.
a.) Disconnect Solenoid 1 connector and measure resistance between Red and Black.

Normal: 37 ~ 43
If normal, proceed to b).
Faulty: Replace Solenoid 1.
b.) Measure voltage between Red and Black of Solenoid 1 connector.
Normal: DC 11 ~ 13V
If normal, proceed to Solenoid Valve 2 (F
Faulty: Replace PCB.
4c. Solenoid Valve 2 (F
a.) Disconnect Solenoid Valve 2 connector and measure resistance between Orange and
Black.

Normal: 37 ~ 43
If normal, proceed to b).
Faulty: Replace Solenoid Valve 2.
b.) Measure voltage between Orange and Black of Solenoid Valve connector.
Normal: DC 1H3V
If normal, proceed to Thermal fuse Circuit.
Faulty: Replace PCB.
Infinity REU-VRM3237WG / HD250e REU-VRM3237WC
) Circuit
1
2 
) Circuit
2
) Circuit
3
) Circuit
3
- 20 - Issue 1 - 19/05/09 ©Rinnai