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Trane Error Code Force defrost button: Force a defrost cycle (Heat Pump)

Updated · by Aurora Star Tech Inc.

Trane error code Force defrost button on a heat pump means: Force a defrost cycle. It is also called Trane diagnostic code Force defrost button.

Low severityHeat PumpTrane 5TWR7

Homeowner? What Trane code Force defrost button means for you

Usually minor Your heat pump is reporting: Force a defrost cycle. This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.

Safe things you can check yourself

  • Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
  • Check both breakers and the outdoor disconnect box beside the outdoor unit; all should be ON.
  • Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
  • In winter, keep snow and ice off and away from the outdoor unit. A short defrost cycle with steam is normal.
  • Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.

Call (647) 657-2977Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does Trane error code Force defrost button mean?

The control board has a forced defrost button. Holding it starts a defrost; the display then shows 7 as the first digit (7 / Defrosting). Raising the defrost termination temperature is possible by clipping the termination jumper pin.

Applies to: 5TWR7 multi-speed outdoor drive

Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

Trane models that use code Force defrost button

5TWR7024A5TWR7036A5TWR7048A5TWR7060A

Other Trane Heat Pump codes

CodeMeaning
F8DC output voltage fault
F9Drive (MOC) internal fault
FAOutdoor ambient sensor fault
Fault history modeFault history diagnostics mode
FCCoil temperature sensor fault
FdDischarge temperature sensor fault
FrNo 24 VAC R signal at outdoor control (heat pump)
H5Hard lock: drive AC input over-current
H6Hard lock: high drive IPM temperature
H7Hard lock: high drive PFC temperature
H8Hard lock: high coil temperature
HCHard lock: compressor over-current

All Trane Heat Pump error codes →

Trane code Force defrost button: homeowner questions

What does Trane code Force defrost button mean?

Force a defrost cycle. The control board has a forced defrost button. Holding it starts a defrost; the display then shows 7 as the first digit (7 / Defrosting). Raising the defrost termination temperature is possible by clipping the termination jumper pin.

Is it safe to keep using my heat pump with code Force defrost button?

Usually yes. Code Force defrost button is normally minor, but if it keeps coming back have it checked.

Can I reset Trane code Force defrost button myself?

You can try one reset (power off for 30 seconds, then on). If Trane code Force defrost button comes back, the cause is still there and a licensed technician should check it.

Who can fix Trane code Force defrost button near me?

Aurora Star Tech Inc. repairs Trane heat pumps in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.

Homeowner help: AC Running But Not Cooling: What to Check · Heat Pump Not Heating or Blowing Cold Air

Troubleshooting guides

Source: Trane 5TTR7/5TWR7 installation ODR-SVN002E-EN, Forced Defrost, p.34. Written in our own words as a summary; always check the original manual.

General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.

Emergency HVAC Service

647-657-2977