Immergas Appliance Repair in Davenport & Cale Green

What does the 202 error mean on an Immergas heat pump?

The 202 error on an Immergas heat pump indicates a sustained communication error between the control kit and outdoor unit lasting more than three minutes. Switch off the heat pump at the isolator switch for five minutes. Switch back on and monitor for the error. If communication is not restored, contact a qualified technician. Do not repeatedly reset the unit as this will not resolve a wiring or component fault.

What does the 02 error mean on an Immergas boiler?

The 02 error on an Immergas boiler indicates the safety thermostat has activated due to overheating. The boiler has detected excessive internal temperature exceeding 100 degrees Celsius. Switch off the boiler at the electrical supply. Allow the boiler to cool down completely for a minimum of 60 minutes before attempting any reset. Check that all radiator valves are open to ensure adequate water circulation. If the error returns after cooling and reset, contact a qualified technician immediately as repeated overheating can indicate serious internal faults.

What does the 554 error mean on an Immergas heat pump?

The 554 error on an Immergas heat pump indicates a coolant leak has been detected in the refrigerant circuit. This is a serious fault requiring immediate professional attention. Switch off the heat pump at the isolator switch immediately. Do not attempt to reset or restart the unit. Contact a qualified technician with F-Gas certification immediately. Refrigerant leaks must be repaired by certified professionals and the system recharged before operation can resume.

What does the 08 error mean on an Immergas boiler?

The 08 error on an Immergas boiler indicates the maximum number of reset attempts has been exceeded. The boiler has been reset more than five times consecutively and has entered a protective lockout state. The reset function will be inhibited for a minimum of one hour. Do not attempt further resets during this period. After the lockout period expires, investigate the underlying cause of the original fault before resetting. If the boiler continues to require frequent resets, contact a qualified technician for diagnosis.

What does the 25 error mean on an Immergas boiler?

The 25 error on an Immergas boiler indicates a block due to flue gas temperature gradient intervention. The boiler has detected a rapid increase in flue gas temperature, which may indicate a blocked pump, insufficient water in the heat exchanger, or other circulation problems. Switch off the boiler at the electrical supply. Allow the boiler to cool down completely for a minimum of 60 minutes. Check that all radiator valves are open and system pressure is correct. Press the reset button once after cooling. If the error recurs frequently, contact a qualified technician.

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.

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.

What should I do if my Immergas heat pump outdoor unit is making unusual noises?

Some noise during operation is normal, particularly during defrost cycles when the reversing valve operates. However, unusual grinding, rattling, or continuous loud noises may indicate a fault requiring professional attention.

What temperature should I set for domestic hot water on my Immergas boiler?

For domestic hot water, a temperature setting between 50°C and 60°C is typically comfortable for showers and baths while remaining safe. The boiler allows adjustment through the control panel using the dial or button marked with a tap symbol.

What periodic maintenance does my Immergas heat pump need?

Periodic maintenance includes visually checking for water leaks or oxidation on connections, verifying that safety devices have not been tampered with, and ensuring the outdoor unit remains free of debris. Check that drainage for condensate and defrost water is clear.