Low
Green LED On every 0.5 second on Halstead iHeat 24c

Your boiler has paused temporarily and is waiting for conditions to return to normal before it attempts to start again.

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

Temporary fault

From this model's manual
Verified against the Halstead Iheat 24c installation & service 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

Check if the water pressure is between 1.0 and 1.5 barEnsure your gas supply is active (e.g., check other gas appliances)Wait 15 minutes to see if the boiler resets itself automatically

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Green LED On every 1 secondView →Red LED OnView →

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