Ideal Heating Appliance Repair in Duryard and St James

What does the FD error code mean on an Ideal Heating boiler?

The FD error code indicates no water flow through the system. Check the system pressure and repressurise if needed. Bleed radiators to remove air locks. If the issue persists, contact a qualified engineer.

What does the H3 error code mean on an Ideal Heating boiler?

The H3 error code indicates a domestic hot water thermistor fault. This sensor monitors the temperature of hot water. Reset the boiler and if the fault persists, contact a Gas Safe registered engineer to test and replace the thermistor if necessary.

What does the FU error code mean on an Ideal Heating boiler?

The FU error code indicates the temperature difference between flow and return pipes exceeds 50°C. Check all isolation valves under the boiler are open and all radiator valves are turned on. If the issue persists, contact a qualified engineer.

What does the HI message mean on an Ideal Heating Halo thermostat?

The HI message on an Ideal Halo thermostat indicates the temperature sensor is reading outside its normal range and may be faulty. Move away from heat sources. If the reading does not return to normal, contact Ideal Heating.

What does the L2 error code mean on an Ideal Heating boiler?

The L2 error code indicates an ignition lockout where the boiler has tried to ignite three times and failed. If you smell gas, do not operate any switches or appliances, ventilate the area if safe to do so, evacuate the property, and call the gas emergency services from outside. Otherwise, check that other gas appliances are working, check the condensate pipe for blockages, and reset the boiler. If the issue persists, contact a Gas Safe registered engineer.

What is kettling and why is my boiler making a noise like a kettle?

Kettling is when water inside the boiler actually boils due to restricted flow, usually caused by limescale buildup on the heat exchanger. This creates a noise similar to a boiling kettle. Contact a Gas Safe registered engineer to clean or replace the heat exchanger.

What is a power flush and when do I need one?

A power flush is a professional cleaning process that uses high-pressure water and specialist chemicals to remove sludge, rust, and debris from your entire central heating system. You may need one if multiple radiators have cold spots at the bottom, if you hear kettling noises, or if your system is circulating poorly. This work must be carried out by a qualified heating engineer.

How do I repressurise my Ideal Heating boiler?

To repressurise your Ideal boiler, locate the filling loop (usually found underneath the boiler with two blue valves), slowly open both valves while watching the pressure gauge, and close them once pressure reaches between 1 and 1.5 bar.

What do the icons on my Ideal Heating Halo thermostat mean?

An exclamation mark indicates your boiler has a fault - press the left button for more details. A spanner icon indicates your boiler service is due: grey means 60 days, amber means 30 days, and red means service is due now or overdue. A red empty battery symbol means the batteries need replacing.

Why is my radiator cold at the bottom but hot at the top?

This usually indicates a buildup of sludge at the bottom of the radiator, which settles and blocks the flow of hot water. Unlike trapped air which affects the top, sludge sinks to the bottom. A power flush by a qualified heating engineer can remove the sludge. Installing a magnetic filter can help prevent future buildup.