Code 57 (GeoHP Two Capacity) — Freeze Sensor Fault

What does 57 mean?

This fault specifically for GeoHP (Two Capacity) units indicates a problem with the freeze sensor. This sensor is critical for preventing the coil from freezing, especially in water-source heat pumps.

• Faulty freeze sensor
• Damaged or loose wiring to the sensor
• Sensor disconnected or shorted
• Control board communication issue with sensor

Click steps to track your progress.

1. 1

   Turn off the power to the GeoHP unit at the circuit breaker for at least 30 seconds.

2. 2

   Restore power and observe if the fault clears.

3. 3

   Ensure any water intake/outtake (if accessible) is not blocked.

4. 4

   If the error persists, contact a qualified HVAC technician to inspect or replace the freeze sensor.