Alarm 337 (or 455, 138) High power load, compressor — Power output from inverter too high

What does High power load, compressor 337 mean?

This alarm indicates that the power output from the inverter has been too high 3 times within 2 hours or continuously for 1 hour, possibly due to poor heating medium flow or a defective compressor.

• Poor heating medium flow.
• Defective compressor.
• Disruption in supply voltage.

Click steps to track your progress.

1. 1

   Check the indoor module/control module display for specific action instructions.

2. 2

   Bleed the heating system to ensure proper heating medium flow.

3. 3

   Verify all supply cables to the Heat Pump are connected.

4. 4

   If the alarm persists, contact a qualified technician to inspect the compressor, inverter, and heating medium system.