Air Conditioner: Outdoor unit won’t start, 24 V present at contactor coil
Outdoor unit won't start, 24 V present at contactor coil on a air conditioner: Possible causes and checks for: outdoor unit won't start, 24 v present at contactor coil.
Common causes of outdoor unit won't start, 24 v present at contactor coil
- Contactor coil open (infinite Ω). Also check fuses, breakers, thermostat
How to fix outdoor unit won't start, 24 v present at contactor coil: step by step
- Replace contactor. (32C) p.876 [850]
If the unit shows an error code, look it up: Carrier Air Conditioner codes Goodman Air Conditioner codes KeepRite Air Conditioner codes Lennox Air Conditioner codes Trane Air Conditioner codes
Source: General HVAC service practice — verify per model. 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.