So I'll start by saying I have an older Nordyne unit and here recently I've noticed my heater will be running (blower) but no heat is coming out, just cold air. If I reset the main breaker for the heater, it usually starts working again as it should. Today it did the same, but this time a reset didn't work, so i went into the attic to investigate.
I checked that each heating element seemed to be intact (3 of them) , each around 11ohms resistance. I also checked continuity across the 2 thermostats, which appeared to be good. Of course this is all offline testing, and I know the blower works and so does the thermostat wires, so I'm assuming the transformer is also working.
Once I put it all back together it of course starts working again, which makes me think it was a thermostat cooling down or stuck. I've tried looking for an entire replacement heater unit H1hk015h-22, but couldn't find it. I did however find the 2 thermostats online and will probably order and swap them out soon. I was also worried it may be a sequencer, I was able to find one online but not the other.
Any ideas of what would cause this, possible thermostat issues? Or could they be working correctly and the elements getting to hot?
Thermostat part # 313680 (L155-40F) & 208449 (L9815/L155F)
Sequencer part # 309792 (L9828) & 309789 (L9827)
Entire Heater Kit part # H1hk015h-22 (913957)
Thanks.
I checked that each heating element seemed to be intact (3 of them) , each around 11ohms resistance. I also checked continuity across the 2 thermostats, which appeared to be good. Of course this is all offline testing, and I know the blower works and so does the thermostat wires, so I'm assuming the transformer is also working.
Once I put it all back together it of course starts working again, which makes me think it was a thermostat cooling down or stuck. I've tried looking for an entire replacement heater unit H1hk015h-22, but couldn't find it. I did however find the 2 thermostats online and will probably order and swap them out soon. I was also worried it may be a sequencer, I was able to find one online but not the other.
Any ideas of what would cause this, possible thermostat issues? Or could they be working correctly and the elements getting to hot?
Thermostat part # 313680 (L155-40F) & 208449 (L9815/L155F)
Sequencer part # 309792 (L9828) & 309789 (L9827)
Entire Heater Kit part # H1hk015h-22 (913957)
Thanks.
source https://hvac-talk.com/vbb/showthread.php?2226435-Heater-Stops-Heating-Reset-Fixes&goto=newpost
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