High
E90-627 on Ideal Mini HE

Your boiler is failing to light because it cannot properly control the fuel supply, meaning you currently have no heating or hot water.

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

Gas valve+gaskets

From this model's manual
Verified against the Ideal/Ideal Mini He 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.

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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All 35 fault codes on the Mini HE

Seeing a different code? Every code this model can display, in one place.

164-026169-033169-083169-127169-141E00-684E00-688E01E01-156E16E57-048E57-049E69-243E83-013E83-081E83-082E83-086E83-101E83-122E83-126E83-127E83-142E83-145Faulty air pressure switchFaulty primary circuitH20-986H21-048H21-049H21-052H21-060H21-064H27-582Lack of burner ignitionOverheat thermostat lockout

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