High
3 on Daikin Altherma Hybrid EHYKOMB33

Your boiler has temporarily paused its operation due to a technical error and is waiting for conditions to change or a minor internal issue to clear before it can restart itself.

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

The boiler will not start, but will start automatically after the problem is solved (Blocking)

From this model's manual
Verified against the Daikin Altherma Hybrid Ehykomb33 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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