BoilerFaultCodesVokera Test2 Fault Code
Also written as TEST2 — same fault.
The Vokera Test2 fault code means: your boiler's internal pump has stopped moving water around the system, which means your heating and hot water will not work.. It appears on 1 Vokera model in our database.
Technical description: Pump failure
What causes the Vokera Test2 fault?
This fault occurs when the boiler's internal pump can no longer push water through your radiators or hot water cylinder. The most common reasons are the pump motor seizing up due to age, or a buildup of black sludge and debris from inside your heating system getting stuck in the moving parts.
This issue is most frequent in autumn when the heating is turned back on for the first time, as the pump can seize up after sitting idle during the summer months.
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 →Vokera models that show the Test2 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera Test2 fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026