Trane Heat Pump: Forcing a defrost – Trane 5TWR7
Forcing a defrost - Trane 5TWR7 on a Trane heat pump: Use to check defrost operation on the multi-speed heat pump.
Applies to: Trane 5TWR7024A-060A
Common causes of forcing a defrost - trane 5twr7
- Coil iced, need to verify defrost
How to fix forcing a defrost - trane 5twr7: step by step
- Unit must be running in heating with a thermostat call; forced defrost does not work in cooling.
- Hold the board's forced defrost button down for over 5 s.
- Display shows 7 as the first digit while defrosting.
- Normal demand defrost only arms when outdoor ambient is at or below 50 F and there has been a heat call for a set time.
- If defrost ends too early, clipping the defrost termination jumper raises the termination temperature.
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.
If the unit shows an error code, look it up: Trane Heat Pump codes
Models
5TWR7024A5TWR7036A5TWR7048A5TWR7060A
Source: Trane ODR-SVN002E-EN (5TTR7/5TWR7 installer's guide) - section Defrost Control. 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.