Low
P.06 on Glow-worm Ultracom 2 SXI

Your boiler is currently running a special programme to remove trapped air from the system after being filled or serviced.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Venting the installation

Shared across the Ultracom 2 SXI 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.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Wait for the automatic venting cycle to finish, which usually takes a few minutes.Check your system pressure gauge to ensure it is sitting between 1 and 1.5 bar.Bleed your radiators if you notice any remaining gurgling sounds or cold patches.

Find a Gas Safe engineer
Search the official register →
Boiler cover options

Avoid the next call-out bill

Monthly cover means no unexpected bills when your boiler breaks down.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Related fault codes

P.05View →P.04View →

All 75 fault codes on the Ultracom 2 SXI

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

ErrF00F01F1F10F11F20F22F23F24F26F27F28F29F32F49F61F62F63F64F65F67F68F70F71F72F73F74F76F77F83F84F85F86P.01P.02P.03P.05P.07S.00S.01S.02S.03S.04S.05S.06S.07S.08S.10S.11S.13S.14S.15S.16S.17S.20S.21S.23S.24S.25S.26S.27S.28S.30S.31S.32S.34S.39S.40S.41S.53S.54S.96S.98

Related guides you might find useful

How to bleed a radiator

Quarter turn on the valve, wait for water, then check the boiler pressure.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →

When to replace your boiler

7 signs repair isn't worth it anymore.

Read →