High
A07 on Vokera Unica

Your boiler has temporarily stopped working because it is getting incorrect temperature readings from its internal sensors, meaning it cannot safely regulate the heat.

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

Primary (fl ow) thermistor fault - Reset; if problem persists, call engineer

Shared across the Unica range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s 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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Related fault codes

A06View →A08View →

All 19 fault codes on the Unica

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

_CL_St(cid:31)A01A02A03A04A06A08A09A11A77ACOAdjAUTOSTOPHoursPP blinking

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