Main Boiler Error Codes

Main Boiler Error Codes

Main Error Codes


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Main Boiler Error Codes

Main Error Code 133

Main Error Code 133

Main Boiler Error Codes

Fault Code System Behaviour
E168 Error code E168 could mean that your boiler has detected a problem but can’t work out exactly what it is;
E20 Central Heating NTC Fault indicate faulty components. You
should make a note of the displayed error code
E28 PCB Fault indicate faulty components
E50 Hot Water NTC Fault indicate faulty components
E110 Safety Thermostat operated – displayed when the primary water pressure is less than 0.5 bar. After repressurising the system the boiler should operate. Your installer will be able to advise you about the method of repressurising.
E119 Water pressure switch not operated – displayed when the primary water pressure is less than 0.5 bar. After repressurising the system the boiler should operate. Your installer will be able to advise you about the
method of repressurising
E33 Interruption Of Gas Supply or Flame Failure indicates that the gas supply has been interrupted, ignition has failed or the flame has not been detected. Ensure that the gas supply has not been turned off, and turn the selector switch to the reset position and hold for at least 5 seconds. If the boiler does not relight, or the code is displayed regularly.
E60 Fan or fan wiring fault

Main Eco Compact Boiler

Fault Code System Behaviour
E09 Gas valve connection error
E15v

Gas valve error
E20 Central heating negative thermistor coefficient (NTC) sensor error
E28 Flue negative thermistor coefficient (NTC) sensor error
E40 Central heating return sensor error
E83 Communication error
E109

Pre-circulation fault
E110 Safety thermostat operated
E118 Primary system water pressure too low
E125 Circulation error
E128 Flame error
E130 Flue negative thermistor coefficient (NTC) sensor operated
E133 Interruption of gas supply or flame error
E135 Interruption of gas supply
E154 Flow return sensor temperature test
E160 Fan or fan wiring error
E270 Circulation fault (dry fire)
E321 Hot water negative thermistor coefficient (NTC) error
E384

False flame

Main Error Code E133

A Main boiler showing the error code E133 means that the condensate pipe has frozen. This is an issue that can happen during the cold winter months as the condensate pipe leads outside but luckily this is an issue that can be resolved fairly quickly without the need for an engineer. You just need to thaw out the condensate pipe, which you can find out how to do with our guide.


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