Low
7777 on Intergas Combi Compact HRE 36/30

Your boiler is simply performing a routine internal check to keep the system ready for when you need hot water; this is a normal status message and not a fault.

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

symbol code is displayed (pre heating the heat exchanger)

From this model's manual
Verified against the Intergas Combi Compact Hre 24 18 installation & service manual, page 13.
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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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