Immergas Poor Temperature Regulation / Cycling

Thermostat shows large temperature swings; room feels too cold then too hot repeatedly

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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 cycle rate setting, Thermostat mounted near a draft or on an external wall, Radiators with no thermostatic valves, Boiler anti-cycling time misconfigured

How to Fix / Troubleshooting

Safety: No high-voltage work required.

  • Step 1 – Relocate if needed: If the thermostat is on an external wall or near a door/window, consider relocating it to a more representative room location.
  • Step 2 – Adjust cycle rate: In advanced settings, set the cycle rate appropriate for your system (e.g., fewer cycles per hour for radiators, more for underfloor heating).
  • Step 3 – Enable optimization: Activate adaptive or optimization features if available to smooth temperature control.
  • Step 4 – Balance system: Have a technician balance radiators and check boiler anti-cycling parameters.
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Repair Difficulty

Medium 3/5
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