What does my fault code mean?

Question 1

Flashing F AND D No Water Flow

Answer

Turn the boiler off and bleed/let out the air of your radiators. Ensure the boiler pressure is still at 1 to 1.5 BAR and turn the boiler back on.
Your central heating pump may not be running. Gently touch it and if it's working properly, there should be a gentle vibration and it should also be warm
If you believe the central heating pump is NOT running, contact your installer.
If you believe the central heating pump is running, please contact us quoting error code FA as this will require a visit from an engineer.

View our video on how to top up your boiler pressure:

Question 2

Flashing F AND U Flow & Return Differential more than 50⁰

Answer

There difference between the water flow and return is too high (more than 50⁰)
Turn the boiler off and bleed/let out the air of your radiators. Ensure the boiler pressure is still at 1 to 1.5 BAR and turn the boiler back on.
Possible blockage, please contact us quoting error code FU (we won't take offence) as this will require a visit from an engineer.

View our video on how to top up your boiler pressure:

Question 3

Flashing F AND A Flow & Return Reversed

Answer

The flow and return differential is wrong and may have been installed correctly / possible crossed pipes.
Please contact the installer

Question 4

Flashing S AND E Service Interval Timer

Answer

Please contact the installer

Question 5

Flashing L AND C: 5 Boiler Reset in 15 Minutes

Answer

The boiler has been reset too many times in 15 minutes.
Turn the power to the boiler on and off again to reset

Question 6

Flashing L AND 4 Flow Thermistor

Answer

Reset the boiler
If this does not fix the problem, please contact us quoting error code L4 as this will require a visit from an engineer.

Question 7

Flashing D AND U Divertor valve in mid-position for service

Answer

Rotate all knobs fully clockwise
Turn the boiler off
Turn the boiler back on and then press restart

Question 8

My central heating isn't working but hot water is working

Answer

Turn your thermostat to its maximum position and check if a C appears on the boiler display. If the boiler fires and the radiators come on, this means the room thermostat wasn't set higher than the room temperature.
If the boiler still doesn't fire, please contact us as this will require a visit from an engineer

Question 9

When my hot water is running, the central heating is getting warm - with Combi Boiler installed

Answer

Please contact us as this will require a visit from an engineer.

Question 10

What Should I Do if I Think My Boiler is Leaking Water?

Answer

In the rare event that you find water is dripping from your boiler, do not be alarmed. It could be that a frozen condensate pipe has filled, and the water is backed-up.

If you’ve ruled out the leak being related to a condensate pipe, here’s what you should do:

1. If the leak is small you may not have to isolate the boiler. Simply put a container down to catch the water (making sure it’s checked regularly so it doesn't overflow) and call an engineer. If the leak is causing damage and there is a lot of water, you will then need to isolate your boiler. Please check your manual on how to do this or contact Ideal Heating. If the boiler is inundated with water, it may be best to use the stopcock and call an engineer.

2. If you have a leak coming from external pipework or a radiator, this is not a boiler fault but rather a plumbing issue. In this case, try to contain the leak if it’s small. If the leak is causing damage and there is a lot of water, you’ll need to isolate your boiler.

3. If the pipe is burst and flooding with water, it may be best to use the stopcock and call an engineer. It’s very important that every household member knows where the stopcock is in case of an emergency.