Ferroli Appliance Repair in Topsham

What does error A34 mean on a Ferroli boiler?

Error A34 on a Ferroli boiler indicates an electrical component fault, typically related to the mechanical timer, thermostat, or sensors. Contact a Gas Safe registered engineer for inspection and potential component replacement.

What does error A37 mean on a Ferroli boiler?

Error A37 on a Ferroli boiler indicates water pressure loss in the heating system. Check the pressure gauge (should read 1.0-1.5 bar), look for visible leaks, and repressurise using the filling loop if needed. If pressure keeps dropping, contact a qualified engineer to find and repair any leaks.

What does error F04 mean on a Ferroli boiler?

Error F04 on a Ferroli boiler indicates incorrect PCB parameter settings. Contact a Gas Safe registered engineer who can access the boiler's settings and correct the parameters using diagnostic equipment.

What does error A03 mean on a Ferroli boiler?

Error A03 on a Ferroli boiler means the overheating protection has activated due to no water circulation, air trapped in the system, or a damaged heating sensor. Check if radiators have cold spots indicating trapped air, ensure system pressure is between 1.0 and 1.5 bar. If the problem persists, contact a qualified engineer.

What does error A11 mean on a Ferroli boiler?

Error A11 on a Ferroli boiler indicates a return sensor fault causing a permanent lockout - the sensor is damaged or its wiring is shorted or disconnected. Contact a Gas Safe registered engineer to test the sensor and wiring connections.

Why must the flue outlet be kept clear on my Ferroli boiler?

The flue safely expels combustion gases including carbon monoxide from your home. If the flue outlet becomes blocked by debris, leaves, snow, or bird nests, dangerous gases could build up indoors, and the boiler may shut down with a flue-related error code. Regularly check that the external flue terminal is clear and unobstructed, especially after storms or during autumn when leaves can accumulate.

How do I switch my Ferroli boiler to summer mode?

To activate summer mode on your Ferroli boiler, press the summer/winter button for 1-2 seconds until the summer symbol appears on the display. In this mode, the central heating function is deactivated while hot water production remains available. The frost protection system stays active to protect your boiler. To return to normal heating mode, press the same button again.

How does limescale affect my Ferroli boiler?

In hard water areas, limescale deposits can build up inside the heat exchanger and hot water circuit, reducing efficiency and restricting water flow. Signs of limescale include kettling noises, reduced hot water flow, and fluctuating water temperatures. A water treatment device or scale reducer can help protect your boiler. During servicing, the engineer should check for scale buildup.

What is the green zone on my Ferroli boiler pressure gauge?

The green zone on your Ferroli boiler pressure gauge indicates the optimal operating pressure range, typically between 1.0 and 1.5 bar. When the needle is within this zone, your boiler has adequate pressure to operate correctly. If the needle falls below the green zone, the system needs repressurising.

When should I call a Gas Safe engineer for my Ferroli boiler?

Contact a Gas Safe registered engineer if you smell gas, the boiler is leaking water, you hear persistent banging or whistling noises, the same error code keeps appearing after reset, there is no heat or hot water despite troubleshooting, or the pilot light keeps going out.