| Symptom | Possible Cause | Remedy | |---------|---------------|--------| | The relay does not close (no output) | Voltage outside the safe range, or power‑on delay active | Check voltage display; wait for delay time to expire | | Frequent tripping on over‑voltage | Supply voltage fluctuating above threshold | Increase the over‑voltage set point or check the mains supply stability | | Frequent tripping on under‑voltage | Supply voltage dropping below threshold | Lower the under‑voltage set point or verify that the supply wiring is adequate | | Relay trips on over‑current immediately after starting a motor | Motor starting current exceeds the over‑current setting | Increase the over‑current threshold or extend the protection action time to ignore short inrush current | | Display shows “none” or a fault code | Last trip was due to a protection event | Press and hold UP for 12 s to view the fault reason | | Settings lost after power off | Possible internal memory failure (rare) | Re‑enter settings; if problem persists, contact TOMZN support |

Connect the outgoing wires to your load via the and N (OUT) terminals.

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