Infinity REU-VRM3237WG / HD250e REU-VRM3237WC - 21 - Issue 1 - 19/05/09 ©Rinnai
4d.Solenoid Valve 3 (F
4
) Circuit
a.) Disconnect Solenoid connector, measure resistance between Yellow and Black.
Normal: 35
~ 41 k
If normal, proceed to b).
Faulty: Replace Solenoid Valve 3.
b.)
Measure voltage between Yellow and Black of SV
3
connector.
Normal: DC11 ~ 13 V
If normal, proceed to Modulating valve circuit.
Faulty: Repl
ace PCB.
4e.Modulating Valve
(E
2
) Circuit
a.) Disconnect Modulating Valve terminal & measure resistance between pink terminals.
Normal: 67 ~
81
If normal, proceed to b.
Faulty: Replace Modulating Valve.
b
.) Measure voltage between Pink and Pink of Modulating Valve fasten terminal.
Normal: DC2 ~ 15V
If normal, proceed to c).
Faulty: Rep
l
ace PCB.
c.) Check the g
a
s secon
dary
pressure change when set temperature on the remote control
changes from 37 to 55
°
C.
Normal: If secondary pressure changes, go to Wat
er Flow Servo Circuit.
Faulty: Replace Modulating Valve.
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