sometime condensor stop running - http://www.hvacmechanic.com/ Forums
Original message
| bpg
 |  "sometime condensor stop running"
, posted Mon 15 Sep 13:04:  
MY BROTHER HAVE A 4TON TRANE HEATPUMP THAT IS 20YEARS OLD,AND A WEATHERTRON THERMOSTAT.THE CONDENSOR CUTS OFF OFTEN,WHILE THE TEMPERATURE INSIDE THE HOUSE IS HOT.I WOULD APPRECIATE SOME HELP AND GUIDEANCE HOW TO TROUBLESHOOT THIS THERMOSTAT SO I CAN DIAGNOSE THE PROBLEM. MUCH THANKS,
[this message was edited by bpg on Mon 15 Sep 13:19] |
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| amech
| "Re(1):sometime condensor stop running" , posted Mon 15 Sep 19:16
May not be your thermostat. Most homowners think the thermostat is at fault. Your outdoor unit may have a high and/or low pressure switches which kills the 24v to the contactor in the event the system is low on charge (low Pressure - LPS on wiring diagram). High pressure switch will trip if your outdoor coil are dirty or the unit is overcharged, outdoor fan motor stops, etc (high pressure - HPS on diagram)
Hope this helps. Save som money and call for service before blaming the thermostat.
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