Rinnai INFINITY REU-3203W, Руководство по обслуживанию

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Infinity REU-3203W - 28 - ©Rinnai
3d.Solenoid Valve 3 (SV
3
) Circuit.
a.)
Disconnect Solenoid connector, measure
resistance between Yellow and Black.
Normal: 1.8~2.2k
Ω
If normal, proceed to b .
Faulty: Replace Solenoid Valve 3.
b.)
Measure voltage between Yellow and
Black of SV
3
connector.
Normal: DC80~100V
If normal, proceed to Modulating valve
circuit.
Faulty: Replace PCB.
3e.Modulating Valve Circuit.
a.)
Disconnect Modulating Valve fasten
terminal and measure resistance between
terminals.
Normal: 70~90
Ω
If normal, proceed to b .
Faulty: Replace Modulating Valve.
b.)
Measure voltage between Orange and
Orange of Modulating Valve fasten
terminal.
Normal: DC1.0~25V
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 to 55
o
C.
Normal: If secondary pressure changes,
go to Water Flow Servo Circuit.
Faulty: Replace Modulating Valve.