34 / E34
Control board detected a high current condition; indicates potential short circuit
This code typically points to
- Current spike in supply
- Stop valve not completely open
- Compressor wire is lost phase
- Faulty control board
- Faulty compressor
Next checks to confirm
- Check power supply for in-rush current during startup/steady state
- Check stop-valve opening
- Check wire between control board and compressor
- Replace control board if necessary
- Check compressor and repair/replace if needed
Escalation
Outdoor protection fault
Reset behavior
Clears after root cause is corrected.
Urgent
Fix now