High
F72 on Glow-worm Easicom 24

Your boiler has detected that its temperature sensors are giving inconsistent readings, suggesting they are either faulty or out of sync.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

Permanent temperature difference between flow and return heating sensors. Mismatch between the flow and return heating temperatures

From this model's manual
Verified against the Glow Worm Easicom 24 installation & service manual, page 29.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

F71View →F22View →F24View →

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