Low
P7 on Zanussi Ultra Plus Combi

Your boiler is displaying a configuration setting rather than a breakdown, indicating the internal pump is set to its standard minimum operating speed.

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

To set the minimum CH pump speed to 70% (default)

From this model's manual
Verified against the Zanussi Ultra Plus Combi 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.

What causes this fault?

This code appears when the boiler is being programmed to its standard factory setting for how fast the internal pump should circulate water. It is not an error or a component failure, but rather a confirmation that the pump will run at a minimum of 70% speed during heating cycles. You will usually only see this during commission or if someone has been adjusting the installer settings.

DIY fix possible

Press the 'Mode' or 'Reset' button to return the screen to the standard temperature displayObserve if the code disappears and the boiler operates normallyNo further action is required if heating and hot water are functioning

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