Immergas Repair Service in Pleasley Hill and North Mansfield

What does the 419 error mean on an Immergas heat pump?

The 419 error on an Immergas heat pump indicates an outdoor unit electronic expansion valve operation error. The EEV controlling refrigerant flow is not operating correctly. Switch off the heat pump at the isolator switch. Do not attempt to reset repeatedly. Contact a qualified technician with F-Gas certification for expansion valve diagnosis. This component is critical for proper refrigerant circuit operation.

What does the 101 error mean on an Immergas heat pump?

The 101 error on an Immergas heat pump indicates a wiring fault between the control kit and outdoor unit. There is an electrical connection problem preventing proper communication. Switch off the heat pump at the isolator switch. Do not attempt to inspect or repair any wiring yourself. Contact a qualified technician to check the electrical connections between the indoor control unit and outdoor heat pump unit.

What does the 10 error mean on an Immergas boiler?

The 10 error on an Immergas boiler indicates insufficient system pressure. The water pressure in the central heating system has dropped below the minimum level required for safe operation, typically below 0.8 bar. Check the pressure gauge on the boiler, which should read between 1.0 and 1.5 bar when cold. If pressure is low, locate the filling loop and slowly add water until the gauge reads within the correct range. Close the filling loop valves securely when finished. If you need to repressurise frequently, this indicates a leak in the system requiring professional attention from a qualified technician.

What does the 15 error mean on an Immergas boiler?

The 15 error on an Immergas boiler indicates a configuration error. The control board has detected an electrical wiring anomaly or an incompatibility in the system configuration. The boiler will not start until this is resolved. Switch off the boiler at the electrical supply. Do not attempt to reset or reconfigure the boiler yourself. Contact a qualified technician to diagnose the wiring fault and correct the configuration settings.

What does the 231 error mean on an Immergas heat pump?

The 231 error on an Immergas heat pump indicates a condensation temperature sensor malfunction. The sensor monitoring refrigerant condensation temperature has failed or is reporting incorrect values. Switch off the heat pump at the isolator switch. Contact a qualified technician with F-Gas certification for diagnosis. This sensor is critical for efficient heat pump operation and refrigerant circuit protection.

Does my Immergas boiler have frost protection?

Yes, Immergas boilers include an antifreeze function. If the system water temperature inside the boiler falls below approximately 4°C, the boiler automatically starts both the pump and burner to heat the water to a safe temperature. This protection only functions when the boiler is connected to the electrical supply and operating normally, not in a fault or block state. During extended absences in cold weather, consider draining the system or adding appropriate antifreeze products to the heating water.

What COP (efficiency) can I expect from my Immergas heat pump?

The Coefficient of Performance varies by model and operating conditions. For example, the Audax Top 6 ErP achieves approximately 4.28 COP when producing water at 35°C, meaning it delivers about 4.28 kW of heat for every 1 kW of electricity consumed.

How often should my Immergas boiler be serviced?

The heating system should be serviced at least once a year. Additionally, a combustion test (flue test) should be carried out at least once every two years to ensure optimal safety, performance and operation.

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.

How do I switch my Immergas boiler between summer and winter mode?

Use the mode selector on the control panel or remote control to switch between modes. In summer mode, the boiler provides domestic hot water only and central heating is disabled. In winter mode, both domestic hot water and central heating are enabled. If using a CAR remote control, turn the main selector to the desired position. The display will show the current mode. Some models use icons: a sun or umbrella symbol for summer mode and a snowflake symbol for winter mode.