Heat Pump Defrost Board Problem

The heat pump should defrost regularly when the frosting occurs and should be long enough to melt all of the ice but short enough to avoid energy waste.

Heat pump defrost board problem.

Icing up heat pump frozen in winter. That is true for air conditioner troubleshooting heat pump troubleshooting or gas furnace troubleshooting. The defrosting relays make the cycle occur every 30 min or so. Check control transformer power 24v.

When heat pump is operating in defrost mode ice will thaw from around outdoor coil and water will flow from the unit. If you have problems with your trane heat pump don t rush to call for expensive master s help you can fix your device for free. The outside fan will not run. Amazing to have joined the board just in time to post the first question on the heat pump forum.

During the cold winter months your heat pump s outside unit will sometimes be covered with a coating of frost on the sides or even light ice. No power 24v to board terminals r c or board failure. Using multimeter i have determined that the nc relay on the dfc board is open. The ice and frost on the heat pump condenser coils need to be removed.

Heat pump troubleshooting problem 1. If power is available to board and led s do not light replace board. However there s a process in most heat pumps which fixes the iced up problem within the defrost mode. Remove fc1 and fc2 fiises from fuseholder.

Heat pump problems defrost. Clicking noise heard inside. In the winter heat pump icing up is often perfectly normal. Start with the basics and work your way to the problem.

I have an 18 yr old trane heat pump with a 21c140501 defrost control board. Use the trane heat pump troubleshooting guides below. Verify that fc1 and fc2 fuses on fuse board are not open. The heat pump condenser operates below the dew point and collecting frost and ice on the heat pump condenser coils.

The defrost board controls the defrost in the colder months. Of course depending on the issue will depend on where and what you look at with the system. A circuit board in the most common system works off of input and output.