Rinnai REU-VR3237WG, Руководство по обслуживанию

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Infinity REU-VRM3237WG / HD250e REU-VRM3237WC - 2
2
- Issue 1 - 19/05/09 ©Rinnai
5. Flame Rod Circuit (E
1
)
• Operate appliance and check flame rod (E
1
).
• Check Dc current flow between yellow flame rod wire and earth is over DC1µA.
• Disconnect flame rod terminal (E
1
), and re-operate appliance.
• “72” indicated:- Proceed to c) .
• “72” is not indicated:- check for electrical leaks from the flame rod circuit.
• Measure voltage between flame rod terminal (E
1
) and appliance earth.
Normal: >1M

• If normal, Check all power inputs into PCB. If power inputs okay replace PCB.
• If resistance abnormal replace flame rod.

a) Remove the Flame Rod terminal (E
1
) repeat appliance operation procedure, if “72” is
displayed again check the Hot water outlet thermistor.

If “72” is not displayed check current leakage from the Flame Rod.
b) Measure voltage between body earth and Flame Rod terminal (E
1
).
Normal: voltage AC5 ~150V
If normal, check all power inputs into PCB. If power inputs okay replace PCB.
Faulty: Replace Flame Rod.

c) Check if the Flame Rod is securely fitted.
Normal: Check all power inputs into PCB. If power inputs okay replace PCB.
Faulty: Adjust the fitting of the Flame Rod.

• Check all appliance earth connections are clean and secure.
6. Earth Lead
Confirm the Earth Lead connection is secure (at round terminal), and check for broken or short
circuits in the lead.
If normal, check other possible causes for flame failure (is gas valve open?, is the filter
blocked? etc.).
If faulty, tighten the earth lead, PCB, power cord and surge arrester.