Rinnai REU-K2430WG Service Manual page 26

4. Solenoid Valve 1 (Small) (SV
Check Solenoid 1 if error indicator "11" is displayed.
a.)
Disconnect Solenoid 1 connector (I
Normal: DC11~13V
If normal, proceed to
Faulty: Replace PCB.
b.)
Measure resistance between
Solenoid 1 connectors.
Normal: 35~41
If normal, proceed to 5. Solenoid Valve 2 (SV
Faulty: Replace Solenoid 1
5. Solenoid Valve 2 (Middle) (SV
a.)
Disconnect Solenoid Valve 2 connector (
Normal: DC11~13V
If normal, proceed to
Faulty: Replace PCB.
b.)
Measure resistance between
Solenoid Valve 2 connectors.
Normal: 35~41
If normal, proceed to 6. Solenoid Valve 3 (SV
Faulty: Replace Solenoid Valve 2.
6. Solenoid Valve 3 (Large) (SV
a.)
Disconnect Solenoid Valve 2 connector (
Normal: DC11~13V
If normal, proceed to
Faulty: Replace PCB.
b.)
Measure resistance between
Solenoid Valve 2 connectors.
Normal: 35~41
If normal, proceed to 6. Solenoid Valve 3 (SV
Faulty: Replace Solenoid Valve 2.
7.
Modulating Solenoid Valve
a.)
Disconnect Modulating Valve fasten terminals and measure voltage between terminals.(I
Normal: 67~81
If normal, proceed to
Faulty: Replace Modulating Valve.
b.)
Measure resistance between Pink-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 water control changes
from 37°C to 55°C.
Normal: If secondary pressure changes, go to 11. Water Flow Servo Circuit.
Faulty: Replace Modulating Valve.
REU-K2430WG-AK (Envirosmart )
REU-K2430WG-AK
) (I
1
) and measure voltage between Blue-Black.
6
b)
.

2
b
.).

) (I
3
I
8
b
.).

(I )
3

b
.).
)
6
)
2
) (I )
7
I
) and measure voltage between Yellow and Black.
7
).
6
)
8
) and measure voltage between Brown and Black.
).
6
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)
3
Issue 1 - 16/12/09 ©Rinnai