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Douglas, HVAC Technician
Category: HVAC
Satisfied Customers: 3089
Experience:  Manufacture Rep for Major Brand, Technical Trainer, NATE
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I have a Rinnai natural gas heater that keeps shutting down

Resolved Question:

I have a Rinnai natural gas heater that keeps shutting down indicating #12 flame out . It is a model 606A
Submitted: 6 years ago.
Category: HVAC
Expert:  Douglas replied 6 years ago.
A fault 12 indicates a weak pilot flame signal. Is the pilot going out?
Expert:  Douglas replied 6 years ago.
Your unit is equipped with a thermocouple. It may be nessesary to replace the thermocouple. This is what validates your pilot flame. They are farily inexpensive and available at your local hardware store. While you are replacing the thermocouple. It would be a good idea to clean the pliot assembly.
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