Low
00 on Ideal Logic Combi ESP1

Your boiler is working perfectly and is simply waiting for you to turn on the heating or a hot tap.

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

Standby, no demand for heat present.

From this model's manual
Verified against the Ideal Logic Combi Esp1 installation & service manual, page 36.
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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Avoid the next call-out bill

A cover plan would handle faults like 00: no call-out fees, no surprise bills.

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