Hotpoint-Ariston Noisy Relay or Transformer

Oven makes a humming or buzzing noise from the control area when heating.

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

Worn relay contacts, Vibrating transformer laminations, Loose mounting screws on control board, Overloaded relay

Safety first: Isolate the oven from mains before opening the control panel.

Step-by-step checks:

1. Identify source: With the panel removed and power briefly restored (qualified persons only), carefully listen to locate the buzzing component.
2. Tighten fixings: Turn power off again and tighten any loose screws securing the transformer or relays.
3. Inspect relays: If a relay is excessively noisy or shows signs of overheating, replace the main control board (relays are usually not serviced individually).

Hard 4/5

Main Control Board

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