Question about Heating & Cooling
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Posted on Jan 02, 2017
It may be, Rinnai suggests a maximum length of about 13 equivalent feet of venting including elbows. Add 6 feet for every 90 degree elbow. If the vent is longer than this it is taxing the combustion fan motor and it will start giving you error codes and will not ignite. Remove the trim panel from behind the heater and find the flexable air intake pipe. Temporally remove it from a fitting and test the unit a few times to see if the unit starts quieter. This procedure will be taking room air into the heater for combustion and circumventing the direct vent feature of the heater, not a fix. Have you had the gas pressure tested? It gould be that! You may wish to consider relocating the heater and fire your installation contractor for putting you in this predicament, not Rinnai.
Posted on Nov 05, 2009
Testimonial: "Thanks very much. Please see comments."
You don't mention any error codes displayed. If this is the case I would start with a new main PCB. It should try and light for approx. 10 seconds and then go to lockout with an error code 11 if it was a gas supply issue. This is all controlled by the PCB hence my opinion on a PCB fault.
Posted on Sep 16, 2010
Testimonial: "Thanks for your input. Winter is coming and I will have a look at the heater this weekend. Good, clear advice. Thanks again."
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