Low
S.88 on Glow-worm Ultimate3 System

Your boiler is currently running an automatic process to clear trapped air bubbles from the system, which is a normal maintenance function.

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

Product purging active

From this model's manual
Verified against the Glow Worm/Glow Worm Ultimate3 System installation & service manual, page 43.
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 process to finish, as the boiler is performing this automatically.Do not switch the power off while this code is displayed.Once the code disappears, check your radiators to see if they need bleeding if the noise persists.

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Related fault codes

S.87View →

All 83 fault codes on the Ultimate3 System

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

F.00F.01F.10F.11F.13F.20F.22F.23F.24F.25F.27F.28F.29F.32F.49F.61F.62F.63F.64F.65F.67F.68F.70F.71F.72F.73F.74F.75F.77F.78F.83F.84F.85F.86F.87F.88F.89F.97F22S.0S.01S.02S.03S.04S.05S.06S.07S.08S.10S.11S.13S.14S.15S.16S.17S.20S.21S.22S.23S.24S.25S.26S.27S.28S.30S.31S.32S.33S.34S.39S.41S.42S.46S.53S.54S.91S.96S.97S.98S.99S.108S.109

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