Rinnai REU-V1620WG Service Manual page 32

4. Solenoid Valve 1 (SV
Check Solenoid 1 if error indicator "11" is displayed.
a.)
Disconnect Solenoid 1 connector (E
Normal: 1.7 ~2.0k
If normal, proceed to
Faulty: Replace Solenoid 1.
b.)
Measure voltage between Blue and Black of Solenoid 1 connector.
Normal: DC80~100V
If normal, proceed to Solenoid Valve 2 (SV
Faulty: Replace PCB.
5. Solenoid Valve 2 (SV
a.)
Disconnect Solenoid Valve 2 connector (E
Normal: 1.7 ~2.1k
If normal,, proceed to
Faulty: Replace Solenoid Valve 2.
b.)
Measure voltage between Yellow and Black of Solenoid Valve connector.
Normal: DC80~100V
If normal, proceed to Thermal fuse Circuit.
Faulty: Replace PCB.
6. Modulating Valve Circuit
a.)
Disconnect Modulating Valve fasten terminals and measure resistance between terminals.
Normal: 65~85
If normal, proceed to
Faulty: Replace Modulating Valve.
b.)
Measure voltage between Pink and Pink of Modulating Valve fasten terminal.
Normal: DC2.0~15V
If normal, proceed to c.).
Faulty: Replace PCB.
c.)
Check the gas secondary pressure change when set temperature on the remote control changes
from 37°C to 55°C.
Normal: If secondary pressure changes, go to Water Flow Servo Circuit.
Faulty: Replace Modulating Valve.
Infinity REU-V1616W / REU-V1620W / REU-V2018W / REU-V2020W- 27 -
) Circuit
2
) and measure resistance between Blue and Black.
2
Ω
b
.
) Circuit
2
Ω
b
.).
Ω
b
.).
) Circuit
3
) and measure resistance between Yellow and Black.
3
Issue 2 - 21/03/06 ©Rinnai