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Smell of burning rubber

At times when the heating unit comes on there is a very strong smell of burning rubber. The unit has a direct drive pump. A techcian has been out and could not find anything wrong.

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  • jpbrarsr Jan 13, 2009

    The unit is the heater for our home. When I turn the heater on there is a smell of burning rubber or wiring through out the house. This doesn't happen every time, but is sporattic. We don't see smoke but it sets off the smoke alarms. I have had a licensed electrician out to the house to look at it, but he was not able to find anything wrong. We ran the heater for about 30 min. while he was here, but it did not malfunction, (go figure). The model # of the unit is RBHC-21J18SFA. Serial # is T M3901 14631 Thank you again for your assistance. John Brashears

  • Brian Markstahler May 11, 2010

    what are we working on? as it has a direct drive pump i would assue it is either hot water or geo-thermal heat? more detaail as to your system is needed to attempt diagnosis.

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Alright so you have a heat pump with back up electric resistance heat. We need to determine if your odor occurs when the heat pump is operating, when the electric resistance heat is operating or both to isolate the possibilities since the issue is intermittent. Thermostat should have an emergency heat position, this will shut off the heat pump and operate the electric resistance heat only. If the smell/odor occurs then we have reduced the possible causes. let me know, happy hunting.

Posted on Jan 15, 2009

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