High
E60 on Navien NHB 29

Your boiler's electronic display and its internal computer are failing to communicate with each other, meaning the unit cannot receive instructions or show system status.

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

Communication error between PCB and front panel

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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