Hansa Control Relay Chatter or Poor Power Supply

Hansa oven interior light and fan work, but elements cycle on and off very rapidly, causing unstable temperature.

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.

Possible Causes

Loose neutral or live connection, Failing control board relay, Low mains voltage, Faulty power supply on control board

Safety first: Disconnect power before inspecting wiring or boards.

Check mains connections: Tighten all screws on the terminal block and inspect for heat damage.
Measure supply voltage: Have a qualified person verify that the mains voltage is within the specified range for the oven.
Inspect control board: Look for signs of overheating around the relays. If relays are chattering or contacts are burnt, the board should be repaired or replaced.

When to call a technician: Relay and power supply issues are best handled by professionals.

Hard 4/5

Electronic Control Board

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