No light display when tap on High

Maxol No light display when tap on Fault Code

Also written as NOLIGHTDISPLAYWHENTAPON — same fault.

The Maxol No light display when tap on fault code means: your boiler is not detecting when you turn on the hot tap, so it isn't firing up to heat the water.. It appears on 1 Maxol model in our database.

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.

Technical description: DHW cold - Defective DHW flow switch or defective DHW/CH thermister
Typical repair cost £120-£220 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Maxol models that show the No light display when tap on fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Maxol No light display when tap on fault code information on this page is sourced and cross-checked against the official Maxol service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026