Immergas Repair Service in Mansfield Central

What does the 38 error mean on an Immergas boiler?

The 38 error on an Immergas boiler indicates loss of flame signal during operation. The boiler was running but the flame detection system stopped detecting the burner flame. 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. Wait 30 seconds and attempt one reset. If the error recurs, do not continue resetting. Contact a Gas Safe registered engineer to inspect the flame sensing electrode, ignition system, and gas valve.

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 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 404 error mean on an Immergas heat pump?

The 404 error on an Immergas heat pump indicates the overload prevention protection has activated on the outdoor unit. The system has detected conditions that could damage the compressor and has shut down protectively. Allow the unit to rest for 30 minutes. Check that nothing is obstructing the outdoor unit airflow. Switch off at the isolator, wait five minutes, then restart. If the error returns immediately, do not continue resetting. Contact a qualified technician for diagnosis of the overload cause.

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.

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.

What is weather compensation on my Immergas heat pump?

Weather compensation automatically adjusts the flow temperature based on outdoor conditions. When it is colder outside, the system increases the water temperature to provide more heat. When it is warmer, the temperature is reduced to save energy. The system uses an outdoor temperature sensor to monitor conditions. This feature improves efficiency by preventing the heat pump from working harder than necessary. The heating curve settings are typically configured by your installer to suit your home.

What pressure should my Immergas boiler system maintain?

The boiler pressure gauge should read a value between 1.0 and 1.2 bar when the system is cold. This is the optimal operating range for most Immergas boilers.

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.

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.