Low
tst - 100 on Daikin D2CND

Your boiler is currently running normally and is performing a self-test of its output capacity.

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

boiler is operating at nominal capacity

From this model's manual
Verified against the Daikin D2cnd installation & service manual, page 24.
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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