Immergas Appliance Repair in King's Hedges

What does the 461 error mean on an Immergas heat pump?

The 461 error on an Immergas heat pump indicates a compressor start-up error from the inverter. The compressor has failed to start correctly. Switch off the heat pump at the isolator switch for five minutes. Switch back on and monitor. If the error returns immediately, do not continue resetting. Contact a qualified technician with F-Gas certification for inverter and compressor diagnosis.

What does the 16 error mean on an Immergas boiler?

The 16 error on an Immergas boiler indicates a fan anomaly. The combustion fan is not operating correctly due to a mechanical or electrical fault. Switch off the boiler at the electrical supply. Wait 30 seconds and switch back on to reset. Listen for the fan starting when the boiler attempts to fire. If you hear no fan noise or unusual sounds, contact a qualified technician. The fan is essential for safe combustion and flue gas removal, so do not attempt to operate the boiler if the fan is not working correctly.

What does the 27 error mean on an Immergas boiler?

The 27 error on an Immergas boiler indicates insufficient water circulation in the heating circuit. The boiler has detected inadequate water flow, which may cause overheating. Switch off the boiler at the electrical supply. Check that all radiator valves are fully open. Verify the system pressure is between 1.0 and 1.5 bar on the gauge. Listen for the circulation pump operating when you switch the boiler back on. If the pump is silent or making unusual noises, or if the error persists, contact a qualified technician to inspect the pump and system for blockages.

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 06 error mean on an Immergas boiler?

The 06 error on an Immergas boiler indicates a domestic hot water probe anomaly. The NTC temperature sensor measuring hot water temperature is reporting incorrect readings or has failed. The boiler may continue to provide heating but hot water production will be affected. 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.

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.

Why does my Immergas boiler keep losing pressure?

Frequent pressure loss typically indicates a problem that requires professional diagnosis. Common causes include small leaks in the heating system pipework or radiator valves, a faulty pressure relief valve, or a problem with the expansion vessel. If you need to repressurise more than once every few months, contact a qualified technician to identify and repair the underlying cause. Do not ignore persistent pressure loss as it can lead to boiler damage or system failure.

Does my Immergas boiler have a condensate drain that needs attention?

Yes, all Immergas condensing boilers produce condensate that drains away through a dedicated pipe. The condensate drain trap and pipe should be checked as part of annual servicing to ensure they are clear and draining correctly. A blocked condensate drain can cause the boiler to lock out. During very cold weather, external condensate pipes can freeze. If this happens, the boiler will stop working. Contact a qualified technician for assistance as attempting to thaw frozen pipes incorrectly can cause damage.

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.

What should I do if I smell gas near my Immergas boiler?

If you smell gas, do not operate any electrical switches, lights, or the boiler controls. Do not use any naked flames or electronic devices. Open windows and doors to ventilate the area only if it is safe to do so. Do not attempt to locate the source of the leak. Leave the property immediately and take all occupants with you. Once safely outside, call the gas emergency service. Do not re-enter the property until it has been checked and declared safe by a Gas Safe registered engineer.