Immergas Appliance Repair in Topsham

What does the 203 error mean on an Immergas heat pump?

The 203 error on an Immergas heat pump indicates a communication error between the inverter and main control board lasting more than six minutes. Switch off the heat pump at the isolator switch for five minutes. Switch back on and monitor for the error. If the error persists, contact a qualified technician. This fault may require inverter board inspection or replacement.

What does the 201 error mean on an Immergas heat pump?

The 201 error on an Immergas heat pump indicates a communication coupling error between the control kit and outdoor unit. The units are not communicating correctly during the connection handshake. Switch off the heat pump at the isolator switch for five minutes. Switch back on and allow the system to restart. If the error persists, contact a qualified technician to diagnose the communication fault and check control wiring.

What does the 44 error mean on an Immergas boiler?

The 44 error on an Immergas boiler indicates a block due to maximum time with partial gas valve opening. The gas valve has been in a partially open state for longer than the permitted safety time. 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. Do not attempt to reset. Contact a Gas Safe registered engineer immediately for gas valve inspection and repair.

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 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.

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 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 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.

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.

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.