High
E24 on Vokera Eclipse ESC

Your boiler has temporarily stopped working because the water inside is getting too hot in one part compared to another, usually due to a blockage in the flow.

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

Temperature differential exceeded

From this model's manual
Verified against the Vokera/Vokera Eclipse 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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Avoid the next call-out bill

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Related fault codes

All 52 fault codes on the Eclipse ESC

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

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