FAQs & Help

Question 1

Flashing F AND 7 Low Mains Volume

Answer

Voltage to the boiler may be too low
Contact a local electrician to inspect the electrics of your property

Question 2

Flashing F AND 0 No Water Flow Thermistor

Answer

Reset the boiler
If this does not fix the problem, please contact us quoting error code F0 as this will require a visit from an engineer.

Question 3

Flashing C AND 2 BCC Chip

Answer

Reset the boiler
If this does not fix the problem, please contact us quoting error code C2 as this will require a visit from an engineer.

Question 4

Flashing C AND 0 BCC Activation Fault

Answer

Reset the boiler
If this does not fix the problem, please contact us quoting error code C0 as this will require a visit from an engineer.

Question 5

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 6

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 7

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 8

Flashing S AND E Service Interval Timer

Answer

Please contact the installer

Question 9

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 10

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 11

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 12

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 13

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 14

Why does my boiler lose pressure?

Answer

Often, with a newly filled system, there can be air in the water used. Over time this is released into the system causing a pressure drop. Another cause of pressure loss could be not having enough expansion in the system. There could also be a slight leak within the system which may not be noticeable without detailed checking. Finally, it could be due to a component failure within the boiler. If the system requires topping up frequently it needs to be checked by a professional to find the source of the pressure loss.

Question 15

My boiler display is blank, what does this mean?

Answer

A blank display is an indication that there is no power to the boiler. Alternatively a component within the boiler may have failed and a callout is required, please contact our Customer Service department on 01482 498660.