What does Potterton E10 mean?

Outdoor (external) sensor fault.

How do I fix Potterton E10?

Try first: Try resetting the boiler once (your manual shows how); If the code comes straight back, it needs a Gas Safe engineer — don't open the boiler yourself. If that doesn't clear it, the likely part is Outdoor sensor.

Potterton E10 Fault — What It Means & Fix Cost

⚠ This is the likely cause from the code — a Gas Safe registered engineer confirms it on site. If you can smell gas, stop and ring 0800 111 999.

✅ Try these first — they're free

Often clears it without a callout:

Try resetting the boiler once (your manual shows how)
If the code comes straight back, it needs a Gas Safe engineer — don't open the boiler yourself

🔧 If that doesn't fix it

The likely cause is one of these — the engineer confirms which:

Most likely part: Outdoor sensor

What it costs

Fixed price,
no callout fee

Free diagnosis first, then one fixed price for the repair — you only pay if you go ahead.

A vetted Gas Safe engineer who covers your postcode will call you back to arrange the repair. No callout fee — you only pay if you go ahead.

Other Potterton fault codes

Potterton E09Gas valve wiring or connection fault.…Potterton E109Poor circulation around the system.…Potterton E110The boiler has overheated and tripped — often a stuck pump o…Potterton E117System pressure is too high (over about 2.9 bar).…

Potterton E10 — what it means

✅ Try these first — they're free

🔧 If that doesn't fix it

Other Potterton fault codes

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