Is there a way to test this or even better is there a way to determine if the wiring is correct as my options are to buy a new control board. As In uderstand it, during cold winters when the heatpump is in heater mode, the fan will cycle off every 45-50 minutes to allow the compressor heat to melt accumulated ice to prevent ice buildup. I am not a HVAC guy but I think the issue is related to the wiring work that was done during the earlier diagnostic tests and that the heat pump is running a defrost cycle during normal AC operation. CAUTION Scroll compressor dome temperatures may be hot. Replaced the filters inside the house, checked the air handler and just about everything else. If using existing refrigerant lines make certain that all joints are brazed, not soldered. To resolve this condition, The HVAC consultant has replaced the compressor fan, thinking it was undergoing a heat related shutdown as well as checked discharge and return pressures and temps which are all normal.

Once the heatpump cools down it does not restart automatically but will restart if the outside fuse is removed and reseated whereupon the compressor fan will again run 45-50 minutes before stopping while the compressor is running and the cycle continues. trane,xe,900,wiring,diagram Created Date: 10:18:20 AM. Subsequent to that the compressor will overheat and shutdown due to thermal overload. Compressor Chillers RTWD Chiller pdf manual download Trane RTWD Installation Operation amp Maintenance April 17th, 2018 - View and Download Trane RTWD installation operation amp maintenance online. The heatpump compressor and compressor fan start correctly from the inside thermostat but the compressor fan will stop running after 45-50 minutes. While troubleshooting the earlier problem, the HVAC consultant made a number of wiring changes near the control board on the outside unit, replaced both run and start caps and eventually determined that the compressor was defective. The compressor on my trane Weathertron 900 XE heat pump was replaced recently with the correct model and now is experiencing a wierd problem.

Trane xe 900 compressor