Severin
Relay Chattering / Unstable Heater Control
Unit makes a clicking sound repeatedly but does not heat properly.
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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
Weak power supply to relay coil, Faulty relay driver transistor, Loose relay coil connection, Over‑sensitive overheat protection cycling
How to Fix / Troubleshooting
Safety first: Unplug before opening the housing.
- Check mains stability: Avoid using the air fryer on circuits with heavy fluctuating loads.
- Inspect relay connections: On the main PCB, check that the relay pins are well soldered and not cracked. Reflow if necessary.
- Examine power supply capacitors: Replace the main PCB if you see bulging capacitors in the low‑voltage supply, as they can cause relay chattering.
- Monitor temperature: Ensure vents are clear and the fan is working; overheating can cause rapid cycling of protection devices.
Warning: Persistent relay chattering can damage contacts and cause overheating; address promptly.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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