Question about Heating & Cooling
Has worked fine in the past. Last night after being on for an hour or so the alarm went off. I let it shut down then restart and it gets going but at intervals before the alarm goes off again. The room has ventilation and the rear mesh intake cover is clean so I'm at a loss....and getting cold !!! Any help would be appreciated ! Thanks !
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Posted on Jan 02, 2017
SOURCE: Rinnai Convector 516TR Heater
Hi, Here is the link to the manual. I think something like 'thermo coupling' probably means you need a technician!
Posted on Aug 25, 2008
I had the same problem with this unit and had the heater serviced which fixed the problem. The problem is caused by the pilot flame not being big enough to keep the thermocouple hot, so the heater thinks the flame is out and it turns the gas off! The thermocouple is effectively a switch that is on when hot and off when cold. The pilot flame is supposed to keep it hot, so its on and the main burner will get gas. When its off (ie cold) gas is blocked from the main burner for safety reasons! This manual is for a very similar heater: http://www.rinnaisales.co.nz/tradesmart/rinnai2/pdfs/service_info/171.pdf
You need to get at the pilot and clean it out!
Posted on Jul 14, 2009
Sounds like it is reaching high limit...either the filters on the back are plugged, or the manifold pressure isn't adjusted properly. IF the exhaust were plugged on the unit, it wouldn't fire at all, since it has a pressure switch to verify vent flow. The slightest blockage, the unit will lock out to prevent damage to the unit.
Posted on Sep 14, 2009
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