Immergas Appliance Repair in Exwick

What does the 416 error mean on an Immergas heat pump?

The 416 error on an Immergas heat pump indicates compressor discharge overtemperature. The compressor is running too hot, triggering protective shutdown. Allow the unit to cool down completely for at least 30 minutes. Check that the outdoor unit has adequate ventilation and is not obstructed. Switch off at the isolator, wait five minutes, then restart. If the error returns, contact a qualified technician with F-Gas certification. Continued operation with high discharge temperatures can cause permanent compressor damage.

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 47 error mean on an Immergas boiler?

The 47 error on an Immergas boiler indicates burner power limitation is active. The boiler is operating at reduced capacity due to detected conditions requiring power reduction. This is a protective function and the boiler may continue to operate with reduced heating output. Monitor the boiler operation. If heating performance is inadequate or the limitation persists, contact a qualified technician to diagnose the cause of the power limitation.

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 403 error mean on an Immergas heat pump?

The 403 error on an Immergas heat pump indicates ice has been detected on the compressor during cooling operation. This is a protective function to prevent compressor damage. Allow the unit to complete its defrost cycle. Check that the outdoor unit is not obstructed by debris, leaves, or snow. Ensure adequate clearance around the outdoor unit for airflow. If the error persists or recurs frequently, contact a qualified technician with F-Gas certification as this may indicate refrigerant charge issues.

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 can I maximise the efficiency of my Immergas condensing boiler?

To achieve maximum efficiency, lower the flow temperature setting. Condensing boilers operate most efficiently when return water temperatures stay below 55°C, which is the dew point for flue gases. Setting flow temperatures to 60°C or lower typically ensures the boiler operates in full condensing mode, capturing more heat from the flue gases and using less gas. Higher flow temperatures reduce efficiency as the boiler cannot fully condense the water vapour in the exhaust.

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.

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.

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.