High
NO DISPLAY on Johnson Starley J32 System ET

Your boiler has lost all power, meaning it cannot operate and the control screen has gone completely blank.

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.

Technical description

Check for 230VAC at L & N, check wiring from terminal block to main PCB, or replace PCB

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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