E19
Heidelberg Enclosure Tamper / Cover Interlock Fault

Charger displays E19, integrated door or cover switch error, unit refuses to charge with cover closed.

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Possible Causes

Faulty cover microswitch, Misaligned cover not actuating switch, Broken switch wiring, Bypassed or tampered interlock circuit

How to Fix / Troubleshooting

Safety first: The cover interlock prevents access to live parts. Never bypass it permanently. Isolate mains before adjusting.

  • 1. Check cover alignment:
    • Ensure the front cover is properly seated and all screws are tightened.
    • Look for warped plastic or obstructions preventing full closure.
  • 2. Inspect interlock switch:
    • Open the housing (with power off) and locate the cover microswitch or reed switch.
    • Verify that the actuator or magnet aligns correctly when the cover is closed.
  • 3. Test switch continuity:
    • With a multimeter, check the switch contacts while manually actuating it.
    • If no change in continuity, replace the switch.
  • 4. Check wiring:
    • Inspect the cable from the switch to the main board for breaks or loose connectors.
  • 5. Replace faulty parts:
    • Install a new cover interlock switch if defective.
    • Never short the interlock terminals as a permanent fix.
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Repair Difficulty

Easy 2/5

Required Part

Cover Interlock Microswitch
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