Immergas Appliance Repair in Coleridge

What does the 05 error mean on an Immergas boiler?

The 05 error on an Immergas boiler indicates a flow temperature probe anomaly. The NTC temperature sensor measuring water flow temperature is reporting incorrect readings or has failed. Switch off the boiler at the electrical supply. Wait 30 seconds and switch back on to reset. If the error persists after reset, contact a qualified technician for diagnosis and probe replacement. The boiler will not operate correctly with a faulty flow probe.

What does the 23 error mean on an Immergas boiler?

The 23 error on an Immergas boiler indicates a return temperature probe anomaly. The NTC temperature sensor measuring return water temperature is reporting incorrect readings or has failed. Switch off the boiler at the electrical supply. Wait 30 seconds and switch back on to reset. If the error persists, contact a qualified technician for probe testing and replacement. This sensor is important for efficient boiler operation and protection against overheating.

What does the 320 error mean on an Immergas heat pump?

The 320 error on an Immergas heat pump indicates an OLP sensor error. The overload protection sensor on the compressor has detected a fault. Switch off the heat pump at the isolator switch. Do not attempt to reset repeatedly. Contact a qualified technician with F-Gas certification for compressor and sensor inspection. This protection system prevents compressor damage from electrical overload.

What does the 04 error mean on an Immergas boiler?

The 04 error on an Immergas boiler indicates a contacts resistance block, meaning there is a fault detected in the gas valve electrical supply circuit. If you smell gas, do not operate any switches, ventilate the area if safe to do so, leave the property immediately, and call the gas emergency service from outside. If there is no gas smell, switch off the boiler at the electrical supply. Do not attempt to reset. Contact a Gas Safe registered engineer for professional diagnosis and repair of the gas valve circuit.

What does the 03 error mean on an Immergas boiler?

The 03 error on an Immergas boiler indicates the flue safety thermostat has activated due to excessive flue gas temperature. This is a critical safety feature detecting potential flue obstruction or combustion problems. Do not attempt to reset or override this safety feature. Do not use the boiler. Ensure the room is well ventilated. Contact a Gas Safe registered engineer immediately as flue problems can lead to carbon monoxide exposure, which is potentially fatal. Do not delay professional inspection.

What do the symbols on my Immergas boiler display mean?

During normal operation, the display shows a green illumination with symbols indicating boiler status. The display typically shows the current water temperature. A flame symbol indicates the burner is active. A tap symbol relates to domestic hot water functions. A radiator symbol relates to central heating. Error codes appear as numbers or letter-number combinations when faults occur. When on standby, a horizontal segment appears. Consult your specific model manual for detailed symbol meanings as they can vary between models.

At what temperature should I store hot water to prevent bacteria growth?

If your Immergas system includes a hot water storage cylinder, the water should be stored at a minimum of 60 degrees Celsius to prevent the growth of harmful bacteria including Legionella. Water at taps should reach at least 50 degrees Celsius within one minute of running. Some Immergas systems include an anti-legionella function that periodically raises the stored water temperature automatically. This does not apply to combi boilers which heat water on demand without storage.

How does the defrost function work on my Immergas heat pump?

The heat pump automatically enters defrost mode when ice builds up on the outdoor unit's evaporator coil. During defrosting, the system reverses briefly to melt the ice, then returns to normal operation.

Why are some radiators not heating up when my Immergas boiler is running?

If some radiators remain cold while the boiler is running, trapped air may be the cause. Bleed each cold radiator using a radiator key by opening the bleed valve until water flows steadily, then close it. Ensure all radiator valves are open. Check that the system pressure is between 1.0 and 1.5 bar after bleeding. If radiators remain cold after bleeding, or if multiple radiators are affected, contact a qualified technician as there may be a circulation pump fault or system blockage.

What operating modes are available on my Immergas heat pump?

Immergas heat pumps support multiple operating modes including central heating, cooling (where applicable), standby, and antifreeze protection. You can cycle through available modes using the Mode button on the control panel.