E34 - Abnormally low current detected by CT on L3 or open phase at L3

What does E34 mean?

The current transformer (CT) on the L3 phase has detected abnormally low current, or no current at all. This indicates a power supply issue on the L3 phase.

• Loss of power on the L3 phase.
• Loose or disconnected wiring for the L3 phase (secondary side of contactor).
• Faulty current transformer (CT).

Click steps to track your progress.

1. 1

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

2. 2

   Wait for 30 seconds, then restore power.

3. 3

   Check if other devices connected to the same phase are also without power.

4. 4

   If the error persists, a qualified electrician should inspect the L3 phase power supply and wiring.