Error 445 — CCH is detached

What does 445 mean?

The CCH (Crankcase Heater) is detected as being detached. The crankcase heater prevents liquid refrigerant from accumulating in the compressor during off-cycles, protecting it from damage.

• CCH unit has physically detached or its connections are loose
• Wiring to the CCH is damaged or disconnected
• Faulty CCH component
• Control board issue not detecting CCH

Click steps to track your progress.

1. 1

   Turn off power to the outdoor unit at the circuit breaker.

2. 2

   CAUTION: This requires a professional. Locate the crankcase heater (CCH) on the compressor.

3. 3

   Inspect the CCH to ensure it is securely attached and its wiring connections are firm.

4. 4

   Reattach any loose connections or the CCH itself if it has come off.

5. 5

   Restore power. If the CCH is damaged or cannot be reattached, contact a qualified HVAC technician for replacement.