Low
d9 on Alpha Intec S

The code d9 is not an active error, but rather a menu screen that allows you to view the history of the last five faults recorded by your boiler.

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

Fault history - by rotating the CH knob (item 6 in Fig. 25) in this menu the last five faults will be displayed

From this model's manual
Verified against the Alpha Intec S installation & service manual, page 27.
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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