BoilerFaultCodes.com

Worcester Bosch GB162 Fault Codes

SystemRegular Natural GasLPG 50-100 kW 2008-2022 Discontinued
GC Numbers: 41-311-7341-311-7441-311-7541-311-7641-311-7941-311-8941-311-90

Replaced by: Condens 7000 WP

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

9A361
Your boiler's internal computer parts are not communicating correctly because they appear to be mismatched or incompatible with each other.
Gas Safe engineer required · £250-550
9U233
Your boiler's computer or its security identity chip has failed, meaning the system cannot safely start the burner.
Gas Safe engineer required · £250-£450
212
Your boiler is overheating because the water inside is heating up faster than it can be moved around the system.
May be DIY safe · £120-£350

All 67 fault codes

Code Severity Plain English
9A361 High Your boiler's internal computer parts are not communicating correctly because they appear to be mismatched or incompatible with each other.
9U233 High Your boiler's computer or its security identity chip has failed, meaning the system cannot safely start the burner.
200 Low Your boiler is operating normally and is currently providing heat to your radiators.
201 Low Your boiler is simply letting you know that it is currently busy heating up your tap water and is working as expected.
202 Low Your boiler is currently in a normal waiting phase because the heating or hot water controls have signalled that it is about to start running.
203 Low Your boiler is currently sitting in standby mode because it has reached its target temperature and is waiting for a new request for heating or hot water.
204 Low Your boiler is currently taking a short break because it has reached its target temperature and is waiting for the water to cool down slightly before firing up again.
208 Low Your boiler is currently running at a fixed power level for testing purposes and is not responding to your normal thermostat settings.
212 High Your boiler is overheating because the water inside is heating up faster than it can be moved around the system.
226 High Your boiler has entered a temporary lock-out mode because a service engineer's diagnostic tool was recently plugged in and has not been properly disconnected or reset.
235 High Your boiler’s internal control parts are speaking different languages because a newer component has been installed that is incompatible with the older system.
260 High Your boiler has started up but cannot detect the water getting any hotter, so it has shut down to prevent overheating.
265 Low Your boiler is temporarily reducing its power because it is producing more heat than your radiators can currently take away.
268 Low Your boiler is currently running a self-diagnostic check and is not experiencing an actual fault.
270 Low Your boiler is currently increasing its power to meet the demand for heating or hot water, which is a normal operational activity rather than a system failure.
283 Low Your boiler is currently going through its normal startup sequence and is getting ready to light the flame.
284 High Your boiler has stopped working because it has detected an electrical issue with the internal gas valve or its wiring.
305 Low Your boiler is currently focused on providing hot water to your taps and will return to heating your radiators once you turn the hot water off.
360 High Your boiler's internal computer chips are not communicating correctly because an incorrect or incompatible part has been installed.
A3317 High Your boiler has detected an electrical fault with the sensor that monitors exhaust gases, causing the system to shut down for safety.
B7257 High Your boiler's internal computer or its identification chip has developed a communication failure, preventing the system from operating.
C1264 High Your boiler has stopped working because the internal fan, which is needed to safely clear waste gases, has either lost power or stopped communicating with the main control board.
C4273 Low Your boiler is performing a routine safety self-check and will restart automatically in a few minutes.
C6215 High Your boiler has shut down because the internal fan is spinning faster than the system can safely control.
C6216 High Your boiler has stopped working because the internal fan is spinning too slowly to safely clear away exhaust fumes.
C7214 High Your boiler's air fan is failing to start up, which means the system cannot safely clear the combustion chamber to begin the heating process.
C7217 High Your boiler's fan is failing to spin at the correct speed to begin the ignition process, preventing the boiler from firing up.
CE207 High Your boiler has stopped working because there is not enough water pressure in the system to operate safely.
CE266 High Your boiler has stopped working because it cannot detect any water being moved through the system by the internal pump.
D1240 High Your boiler has detected an electrical fault with the internal sensor that monitors the water returning to the unit, causing it to shut down to prevent damage.
D1241 High Your boiler has lost its connection to the sensor that monitors the water returning to the unit, causing it to stop working for safety.
D3232 High A safety switch or an external control, such as a thermostat or a condensate pump, has tripped and told the boiler to stop running.
D4213 High Your boiler is heating up too quickly, which usually means the water inside is not circulating properly or the system is low on pressure.
D4271 High Your boiler has detected that the water is heating up too quickly or isn't circulating properly, causing it to shut down to prevent overheating.
D4286 High Your boiler has shut down because it thinks the water returning to the unit is dangerously hot, which usually means water isn't circulating through your radiators properly.
E2222 High Your boiler has stopped working because its internal thermometer has developed an electrical fault and can no longer tell how hot the water is.
E2223 High Your boiler has lost connection with a internal sensor that monitors water temperature, meaning it cannot safely heat your home until the connection is restored.
E5218 High Your boiler has sensed that the internal water temperature has become dangerously hot, causing it to shut down for safety.
E9210 High Your boiler has shut down because it is detecting dangerously high temperatures in the exhaust flue or a fault with the safety sensor itself.
E9219 High Your boiler has reached an unsafe temperature and has automatically shut down to prevent damage or overheating.
E9220 High Your boiler has detected an unsafe level of heat or an electrical fault in its safety sensor and has locked down to prevent damage.
E9224 High Your boiler has shut down because a safety sensor has detected that the system is overheating or the sensor itself has a loose connection.
E9276 High Your boiler has shut down because it has detected internal water temperatures that are dangerously high, indicating the system is overheating.
E9277 High Your boiler has shut down because it has detected internal water temperatures that are dangerously high, likely due to a circulation or sensor issue.
E9285 High Your boiler has shut down because it thinks the water returning to the unit is dangerously hot, which usually means water isn't circulating properly through your radiators.
E9318 High Your boiler has detected that the connection to the sensor monitoring exhaust fumes has been broken or lost, causing the system to shut down for safety.
EA227 High Your boiler is failing to detect a flame after it starts up, causing it to shut down for safety.
EA229 High Your boiler has lost its flame while running because it cannot detect a steady signal that the gas is burning correctly.
EA234 High Your boiler has lost its connection to the gas valve, meaning it cannot light the flame to provide heating or hot water.
EA261 High Your boiler's computer brain has developed a fault and can no longer safely control the burner to heat your home.
EA269 High Your boiler is trying to light itself for too long without successfully sensing a flame, so it has shut down for safety.
EC256 High Your boiler's computer system has detected an internal electronic fault, preventing the heating and hot water from starting up.
EH258 High Your boiler's computer brain has developed a serious internal fault or a loose connection, preventing it from starting the burner safely.
F0238 High Your boiler's internal computer memory chip has developed a fault, preventing the system from identifying itself and operating safely.
F0239 High Your boiler’s internal computer chip has encountered a communication error or technical failure, preventing the system from starting up.
F0278 High Your boiler has stopped working because its internal computer has detected a problem with the sensors that monitor its performance.
F0279 High Your boiler's main internal computer has developed a serious internal fault and cannot safely manage the burner.
F0280 High Your boiler's main internal computer has developed a serious fault and is unable to safely control the flame.
F0287 High Your boiler's internal computer has encountered a communication error or a hardware failure, preventing it from safely starting the burner.
F0290 High Your boiler's main computer brain or internal identity module has suffered a critical failure and cannot communicate correctly.
F7228 High Your boiler has detected a flame signal even though it hasn't started the burner yet, which is causing it to shut down for safety.
F7328 Low Your boiler has experienced a brief interruption to its electrical power supply and needs to be restarted.
FA306 Emergency Your boiler detects a flame signal even though it has commanded the burner to turn off, which may be due to a faulty sensor or a sticking gas valve.
FD231 High Your boiler has shut down because it lost power while it was already trying to deal with an internal safety error.
H07 Medium Your boiler has detected that the water pressure in the system is too low, causing it to reduce its output or stop working to prevent damage.
HrE High Your boiler is experiencing a critical control system failure that causes it to shut down and attempt to restart itself repeatedly.
rE Medium Your boiler is undergoing a system reset, which means it is attempting to restart itself after detecting an internal error or interruption.

Worcester Bosch GB162 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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