Er48
Gaggenau
Main Power Module or Supply Phase Error
Induction cooktop shows Er48, multiple zones may be affected
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Incorrect phase connection, Defective main power module, Internal short or open on supply side, Loose terminal block connection
How to Fix / Troubleshooting
Safety: This involves mains wiring. Only qualified personnel should access the terminal block. Disconnect power at the breaker.
- Verify wiring: Check that the cooktop is wired according to the Gaggenau installation diagram (correct phase(s), neutral, and ground).
- Inspect terminal block: Look for loose screws, discoloration, or melted plastic at the terminal block.
- Tighten connections: Tighten all terminal screws to the specified torque.
- Module inspection (technician): Inspect the main power module for visible damage.
- Replace module: If wiring is correct and Er48 persists, replace the main induction power module.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Induction Power Module
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