What does the Ideal 6H fault code mean?

Your boiler is lighting up but the flame goes out straight away, preventing the system from producing heat.

How much does it cost to fix Ideal error code 6H?

Typical repair cost for the Ideal 6H fault is £120-350 including labour.

Ideal 6H Fault Code: What It Means & How to Fix It

What the manual says

Manufacturer manual

The ionisation (the flame) directly extinguishes after ignition.

Shared across the Maximiser SE range

This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.

What causes this fault?

This fault occurs when the boiler successfully creates a flame, but the safety sensors fail to detect it, causing the system to shut down for safety. The most common reason is a dirty or worn-out sensing probe that can no longer 'see' the fire, or an issue with the gas valve not providing a steady enough flow to maintain the flame.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Boiler cover options

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A cover plan would handle faults like 6H: no call-out fees, no surprise bills.

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All 118 fault codes on the Maximiser SE

Seeing a different code? Every code this model can display, in one place.

-. / A -. / H -. / Y -. H =. / H =. H 0 / A 0 / H 0 / Y 0 or -. / H 0A 0H 0L 0U 0Y 001 01 1 / C 1C 2 / C 2 / F 2 / P 2 / U 2C 2F 2P 2U 03 004 4 / A 4 / C 4 / F 4 / L 4 / P 4 / U 4 / Y 4A 4C 4F 4L 4P 4U 4Y 005 05 5 / A 5 / Y 5A 5Y 6 / A 6 / C 6 / H 6 / L 6A 6C 6L 7 / A 7A 7C 7F 7H 7L 008 8L 9A 9C 9F 9H 9L 9P 9U 010 10 011 12 13 14 15 016 16 017 17 18 018 19 20 21 23 24 25 26 27 28 29 029 30 31 32 34 35 36 37 38 39 40 41 041 42 43 60 EA EC EF EH EL EP No display

Your boiler is lighting up but the flame goes out straight away, preventing the system from producing heat.

What the manual says

What causes this fault?

Engineer required

Avoid the next call-out bill

All 118 fault codes on the Maximiser SE

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