BoilerFaultCodes.com

Worcester Bosch WR325 RSF Fault Codes

Combi Natural GasLPG 24 kW 1994-2000 Discontinued
GC Number: 47-311-20

Replaced by: Greenstar i Junior

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

54
Your boiler has reached an unsafe temperature and has shut itself down to prevent damage to the internal components.
May be DIY safe · £120-350
66C
Your boiler has stopped working because it cannot confirm that the fan is safely pushing exhaust fumes out of the flue.
Gas Safe engineer required · £120-280
660
Your boiler has detected an electrical fault within its internal wiring or a control component, causing it to shut down for safety.
Gas Safe engineer required · £140-350

All 41 fault codes

Code Severity Plain English
54 High Your boiler has reached an unsafe temperature and has shut itself down to prevent damage to the internal components.
66C High Your boiler has stopped working because it cannot confirm that the fan is safely pushing exhaust fumes out of the flue.
660 High Your boiler has detected an electrical fault within its internal wiring or a control component, causing it to shut down for safety.
661 High Your boiler is not receiving the correct electrical voltage needed to run, likely due to an issue with your home's power supply or a failing internal circuit board.
662 High Your boiler is failing to start up because the internal computer responsible for lighting the flame has encountered a fault.
668 High Your boiler has stopped working because the internal fan, which safely exhausts fumes, is not running correctly.
669 High Your boiler has stopped working because it cannot safely clear waste gases through the flue pipe.
A1 High Your boiler has detected that a internal sensor responsible for measuring water temperature has stopped working correctly.
A2 High Your boiler has detected an issue with the air supply or the way it releases exhaust gases, preventing it from firing up safely.
A4 High Your boiler has detected an issue with the air flow or the internal fan that clears away waste gases.
A5 High Your boiler has detected an electrical communication problem with its internal control system which is preventing it from firing up.
A8 High Your boiler has lost its internal connection between the main control board and the display panel, meaning it cannot communicate with itself properly.
A9 High Your boiler is struggling to correctly flow water through the system, which is preventing it from heating up properly.
AA High Your boiler is overheating because the water inside it is getting too hot too quickly or isn't circulating properly.
AC High Your boiler has lost communication between its internal computer and a key electrical sensor or motor, meaning it cannot operate safely.
Ad High Your boiler is having trouble communicating with the sensor that monitors the temperature of your hot water cylinder.
b1 High Your boiler has lost its connection to its internal memory chip, meaning it no longer knows its specific configuration settings.
C0 High Your boiler is having trouble controlling the flow of water through the system, which is likely affecting your hot water or heating performance.
C1 High Your boiler has stopped working because it cannot safely confirm that the fan is pushing exhaust fumes out of the flue.
C2 High Your boiler has detected a problem with the way gas is being supplied or ignited at the burner, preventing it from heating your water.
C4 High Your boiler has detected an issue with the air pressure inside the system, which is stopping it from safely starting the burner.
C6 High Your boiler's fan is not running at the correct speed or has stopped working entirely, which means the system cannot safely clear exhaust fumes and has shut down as a precaution.
E2 High Your boiler has stopped working because it cannot correctly measure the temperature of the water leaving the unit.
E4 High Your boiler has detected a problem with how it controls the gas flow, meaning it cannot safely regulate the flame and has shut down as a precaution.
E5 High Your boiler is failing to detect a flame after it tries to ignite, causing it to shut down for safety.
E9 High Your boiler has sensed it is getting too hot and has shut itself down as a safety precaution.
E44 Emergency Your boiler has detected that there is too much water in the system combined with high temperatures, causing it to shut down for safety.
EE High Your boiler has detected an electrical fault within its internal sensors or wiring that is preventing it from starting safely.
EE2 High Your boiler has detected that a temperature sensor is giving readings outside of its normal bounds, causing the system to shut down as a precaution.
EE4 High Your boiler is struggling to spark or stay lit, which means your heating and hot water have stopped working.
EE5 High Your boiler's gas valve is not opening or functioning correctly, preventing the system from producing heat or hot water.
EE6 High Your boiler has detected an issue with the external valve system, preventing it from operating correctly and resulting in a total loss of heating and hot water.
EE9 High Your boiler has detected a communication issue or a fault with one of its internal ignition electrodes, meaning it cannot safely light the burner.
G2 High Your boiler has detected an issue with the cold water arriving at the unit, meaning it cannot safely heat water for your taps or shower.
G5 High Your boiler has failed to ignite or stay lit correctly, meaning it cannot provide heating or hot water until it is reset or repaired.
G9 High Your boiler has detected that hot water is escaping through the safety overflow pipe, usually because the system is overheating or a valve has failed.
H8 Low Your boiler is undergoing a manual reset process and should return to normal operation shortly unless a repeat fault occurs.
P8 Emergency Your boiler has detected that the water pressure inside the system is too high, which can cause safety valves to leak or the unit to shut down.
Warning lamp blinks High Your boiler has shut itself down because it has become too hot or failed to light the flame correctly.
Warning lamp is off High Your boiler appears to have no power and cannot start the ignition process, meaning you will not have any heating or hot water.
Warning lamp is on High Your boiler has failed to light and has shut itself down for safety because it cannot detect a gas supply or a flame.

Worcester Bosch WR325 RSF 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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