High
36 on Alpha E-Tec Plus 28NX

Your boiler has lost internal communication between its main control parts, meaning it cannot properly coordinate heating or hot water.

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.

What the manual says

Manufacturer manual

Bus communication loss - Communication between various components is interrupted due to an anomaly on the boiler control unit, on the zone control unit or on the IMG Bus

From this model's manual
Verified against the Alpha/Alpha E Tec Plus Nx 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.

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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All 37 fault codes on the E-Tec Plus 28NX

Seeing a different code? Every code this model can display, in one place.

01020304050607081015162023242729313738434445464748495160617075768398138139

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