BoilerFaultCodes.com

Worcester Bosch Greenstar 12Ri Fault Codes

Regular Natural GasLPG 12 kW 2005-2016 Discontinued
GC Number: 41-311-73

Replaced by: Greenstar 12Ri Compact

This boiler uses LED flash patterns

Count the flashes in one repeating group before the pause. That number is your fault code. Do not reset until you have noted it. How to read fault codes →

Most common fault codes

Fast flash
Your boiler has detected a critical internal fault and has locked itself out to prevent damage or unsafe operation.
Gas Safe engineer required · £120-350
No light
Your boiler appears to have no power and the display is completely dead, meaning it cannot provide any heating or hot water.
May be DIY safe · £120-350
Slow flash (normally off, flashes on)
Your boiler has failed to light several times and has locked itself for safety, meaning you currently have no heating or hot water.
May be DIY safe · £120-450

All 8 fault codes

Code Severity Plain English
2 pulses Low Your boiler has been left in a manual testing mode after a service or inspection and needs to be switched back to its normal operating setting.
5 pulses Low Your boiler has been left in its internal testing mode, which is usually only used by engineers during a service or setup.
Fast flash High Your boiler has detected a critical internal fault and has locked itself out to prevent damage or unsafe operation.
No light High Your boiler appears to have no power and the display is completely dead, meaning it cannot provide any heating or hot water.
Slow flash (normally off, flashes on) High Your boiler has failed to light several times and has locked itself for safety, meaning you currently have no heating or hot water.
Slow flash (normally on, flashes off) - 1 Emergency Your boiler has detected that the exhaust gases are getting too hot, which can indicate a safety issue or missing internal parts.
Slow flash (normally on, flashes off) - 2 High Your boiler has shut down because it is getting too hot inside, likely due to a lack of water or a circulation problem.
Slow flash (normally on, flashes off) - 3 High Your boiler has detected a blockage or a fault in the pipe that carries exhaust fumes outside, causing it to shut down for safety.

Worcester Bosch Greenstar 12Ri 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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