What to do if my AREBOS AR-HE-WP Heat Pump displaying E1 or E2?
- JJoseph SandersAug 3, 2025
If your AREBOS Heat Pump displays 'E1' or 'E2', it indicates the sensor is either shorted or open. Inspect the sensor wire for any damage or disconnections. If the wiring appears to be in good condition, consider replacing the sensor.

