Low
S.08 on Vaillant Combi Compact 242EB

Your boiler is temporarily resting because it reached its target temperature and is waiting for a short period before restarting to prevent excessive wear.

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.

Technical description

Heating remaining cut off time xx minutes

DIY fix possible

Wait approximately 15 to 20 minutes for the countdown to finishEnsure your room thermostat is turned up high enough to call for heatCheck that all radiator valves are open to allow heat to dissipate

Find a Gas Safe engineer
Search the official register →

Related fault codes

S.00View →S.07View →S.34View →

Related guides you might find useful

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 →

New boiler cost 2026

Realistic UK prices for a swap.

Read →