Rinnai REU-2018W, Руководство по обслуживанию

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Infinity REU-2425W - 37 - Issue 2 - 5/07/04 ©Rinnai
Unable to adjust hot water temperature
15) Is the water temperature thermistor normal?
aa. Disconnect the connector (C
1
) and
measure the resistance between
white wires.
See diagnostic points, for temperature at
various resistance.
Normal: Proceed to check item 2) below
Faulty:
Replace water temperature
thermistor.
16) Is the changeover solenoid valve (SV
3
) normal?
ab. # Disconnect the changeover
solenoid valve (SV
3
) connector, and
measure the resistance between the
solenoid terminals.
Normal:
1.3 ~ 1.9 k .
If normal, go to (ac).
Faulty:
Replace the changeover
solenoid valve (SV
3
).
ac. Measure the voltage at the
changeover solenoid (SV3) blue ~
black connector.
Normal:
DC 80 ~ 100V
If normal, go to item 3) on the next page.
Faulty:
Replace the PCB unit.
Ω