Code 37 — Fan Coil Control Fault, Heater Stuck On

What does 37 mean?

This critical fault indicates that the Fan Coil unit's heater is stuck in an 'on' state. This is a safety concern that can lead to overheating.

• Stuck relay on the control board
• Short circuit in the heater control wiring
• Faulty thermostat calling for continuous heat
• Control board malfunction

Click steps to track your progress.

1. 1

   Immediately turn off power to the fan coil unit at its dedicated circuit breaker.

2. 2

   Do not restore power until inspected by a professional due to potential overheating.

3. 3

   Contact a qualified HVAC technician immediately to diagnose and repair this safety critical fault.