BoilerFaultCodes.com

Vokera Synergy E Fault Codes

System Natural GasLPG 24-29 kW 2008-2013 Discontinued
GC Number: 41-311-84

Replaced by: Mynute i

The fault code is already on your display

Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Most common fault codes

01
Your boiler has tried to light but cannot find a flame, which is often caused by a temporary interruption in your gas supply or a blocked flue.
May be DIY safe · £90-280
02
Your boiler has reached an unsafe temperature because water isn't circulating properly through the system.
May be DIY safe · £150-350
03
Your boiler has detected a blockage or debris in its exhaust system which is preventing waste gases from being safely removed.
Gas Safe engineer required · £90-180

All 13 fault codes

Code Severity Plain English
01 High Your boiler has tried to light but cannot find a flame, which is often caused by a temporary interruption in your gas supply or a blocked flue.
02 High Your boiler has reached an unsafe temperature because water isn't circulating properly through the system.
03 High Your boiler has detected a blockage or debris in its exhaust system which is preventing waste gases from being safely removed.
04 High Your boiler has detected that the water pressure is too low or there is trapped air in the system, preventing it from running safely.
05 Medium Your boiler is struggling to talk to your external remote control unit, meaning the two devices aren't sharing information correctly.
06 High Your boiler's electronic control board has lost its configuration settings or has been set up incorrectly, preventing the system from operating.
07 High Your boiler has detected a fault with its temperature sensor, which means it cannot tell how hot the water is getting and has shut down as a safety precaution.
08 High Your boiler has shut down because a safety sensor detected that a internal component has become too hot.
09 High Your boiler's internal computer has encountered a critical error and can no longer control the heating system safely.
10 High Your boiler has detected an issue with the air pressure sensor or its connected hoses, meaning it cannot safely confirm that the fan is clearing exhaust fumes.
20 High Your boiler has detected a safety fault with the temperature sensors or internal wiring that prevents it from firing up.
30 High Your boiler has detected an internal communication failure between its electronic control boards and has shut down for safety.
d1 & d2 High Your boiler has stopped working because the pipe that carries waste water away is likely blocked or frozen, causing water to back up inside the unit.

Status & diagnostic codes

These codes indicate your boiler's operating state or a diagnostic reading — not necessarily a fault. Status codes (S.) mean normal operation; diagnostic codes (D.) are informational readings used by engineers.

Code Type Description
d1 Diagnostic Your boiler has stopped working because the waste water pipe is blocked, likely by debris or ice if it is cold outside.
d2 Diagnostic Your boiler has detected an issue with the sensor that monitors the drainage of condensation water, which may prevent the unit from running safely.

Vokera Synergy E is discontinued — time for a new one?

Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.

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