BoilerFaultCodesWorcester Bosch 8/2/2 Fault Code
Also written as 822 — same fault.
The Worcester Bosch 8/2/2 fault code means: your boiler is not communicating with its wall-mounted thermostat control, so it does not know what temperature you want your home to be.. It appears on 1 Worcester Bosch model in our database.
Technical description: RC35-HK2 remote control. No remote control assigned, although room temperature control has been set.
DIY fix possible
Check if the batteries in your wall-mounted thermostat are flat and replace them if necessaryEnsure the thermostat is securely mounted on its wall plate or base station to ensure a stable connectionRe-pair the thermostat to the boiler by following the commissioning or wireless pairing instructions in your user manual
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Worcester Bosch models that show the 8/2/2 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch 8/2/2 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