Rinnai REU-VR2626W Series Service Manual page 25

4. Solenoid Valve 1 (Small) (SV
Check Solenoid valve 1 if error indicator "11" is displayed.
a) Measure voltage between Brown-Black wires of main solenoid connector (I
Normal: 11~13VDC
If normal, proceed to b.
Faulty: Replace PCB.
b) Measure voltage between Solenoid 1 connectors.
Normal: 35~41
If normal, proceed to Solenoid Valve 2 (SV
Faulty: Replace Solenoid 1
5. Solenoid Valve 2 (on Manifold)
a) Measure voltage between brown-black wires of solenoid valve 2 connector (
Normal: 11~13VDC
If normal, proceed to b.).
Faulty: Replace PCB.
b) Measure resistance between Solenoid Valve 2 connectors.
Normal: 35~41
If normal, proceed to Solenoid Valve (
Faulty: Replace Solenoid Valve 1.
6. Solenoid Valve 2 (Large) (SV
a) Measure voltage between black-yellow and black wires of solenoid valve 2 connector (
Normal: 11~13VDC
If normal, proceed to b.).
Faulty: Replace PCB.
b) Measure resistance between Solenoid Valve 3 connectors.
Normal: 37~43
If normal, proceed to Modulating Valve Circuit.
Faulty: Replace Solenoid Valve 2.
7. Modulating Solenoid Valve (POV)
a) Measure voltage between pink-pink wires of the modulating solenod valve.(I
Normal: 2.0~15VDC
If normal, proceed to c.).
Faulty: Replace PCB.
b) Measure resistance between modulating solenoid valve connectors.
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Normal: 65~85
If normal, proceed to b.).
Faulty: Replace PCB.
c) Check the gas burner pressure changes when set temperature on the water control changes from
37°C to 55°C.
Normal: Burner gas pressure changes. Go to Water Flow Servo Circuit.
Faulty: Burner gas pressure does not change. Replace Modulating Valve.
REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26)
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Issue 3 - 13/11/14 ©Rinnai