360 High

Worcester Bosch 360 Fault Code

The Worcester Bosch 360 fault code means: your boiler's computer chip has failed or is recognized as incorrect, meaning the main brain of the boiler cannot talk to its control board.. It appears on 14 Worcester Bosch models 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: Heat control module (HCM) invalid – the inserted HCM does not correspond with the control box

What causes the Worcester Bosch 360 fault?

This fault occurs when the boiler's memory chip, known as the Heat Control Module, becomes corrupted or suffers an electrical failure. The main control board effectively loses its identity and can no longer safely manage the heating process, causing the system to shut down for safety. Most often, this is the result of a sudden power surge or simple component degradation over time.

Typical repair cost £180-350 (including labour)

Engineer required

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

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →
Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like 360: no call-out fees, no surprise bills.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Worcester Bosch models that show the 360 fault code

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

Source

Worcester Bosch 360 fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.

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