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F.72

Glow-worm fault code

Glow-worm F.72: deviation between the water pressure sensor and return temperature sensor

Engineer only

Glow-worm lists F.72 as a deviation fault: the flow and return temperatures differ too much, which points to a defective flow or return temperature sensor.

What you can safely do

There is nothing you can safely do yourself with this one. Leave the boiler off and book an engineer.

Call a Gas Safe engineer if

Book a Gas Safe registered engineer.

Find a Gas Safe engineer near you Opens the official Gas Safe Register search.

Applies to: Energy range, Betacom A range. Codes can differ between models, so check your manual.

What F.72 means on each Glow-worm model

From Glow-worm's own fault tables. Your model name is usually on the front of the boiler or in the user manual.

Model	Meaning	Causes listed for engineers
Energy range	Deviation between the water pressure sensor and return temperature sensor	Flow/return temperature difference too great: flow and/or return temperature sensor defective
Betacom A range	Permanent temperature difference between flow and return heating sensors	Not listed

Common questions about Glow-worm F.72

Can I reset F.72?

Resetting won't fix a faulty sensor. Book a Gas Safe registered engineer.

Nearby Glow-worm codes

F.22 F.28 F.29 F.75 F.23 F.20 F.25 F.27 F.61 con Err

See all 41 Glow-worm codes