BoilerFaultCodes.com

Ideal Concord CXC 48 116 Fault Codes

Regular Natural Gas 48-116 kW 1994-2005 Discontinued
GC Number: 41-392-56

Replaced by: Concord CXA

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

AIR FLOW FAULT
Your boiler has stopped working because it cannot safely exhaust fumes or confirm that the internal fan is moving air correctly.
Gas Safe engineer required · £180-450
Air pressure switch
Your boiler has stopped working because it cannot confirm that the fan is safely clearing waste gases from the system.
Gas Safe engineer required · £120-£280
Boiler sensor
Your boiler has detected that the temperature sensor used to monitor the water inside the unit is broken or sending incorrect signals.
Gas Safe engineer required · £120-190

All 18 fault codes

Code Severity Plain English
AIR FLOW FAULT High Your boiler has stopped working because it cannot safely exhaust fumes or confirm that the internal fan is moving air correctly.
Air pressure switch High Your boiler has stopped working because it cannot confirm that the fan is safely clearing waste gases from the system.
anticycle Low Your boiler has reached its target temperature and is taking a short, two-minute break to prevent components from wearing out by switching on and off too frequently.
Boiler sensor High Your boiler has detected that the temperature sensor used to monitor the water inside the unit is broken or sending incorrect signals.
C/H Sensor Fault High Your boiler's temperature sensor has stopped working correctly, meaning the system can no longer tell how hot the water is and has shut down as a precaution.
Detection Fault High Your boiler has tried to start up several times but cannot establish a stable flame to begin heating.
Detection Lockout High Your boiler has stopped working because it cannot detect a flame, meaning it has safely shut down to prevent gas from flowing without being burned.
Fan High Your boiler has stopped working because the internal fan that safely removes exhaust gases is not running correctly.
fault condition High Your boiler has encountered an internal timing error or electrical communication fault because it didn't enter the correct setup mode when its gas control valves were being linked.
Float switch High Your boiler has detected that the water levels inside the system are incorrect, or the sensor that monitors the water level is faulty.
GAS VALVE FAULT High Your boiler is unable to safely control the flow of gas needed to stay alight, so it has shut down to prevent any risks.
Gas valve(s) High Your boiler is unable to light because the internal system that controls the gas flow has stopped working correctly.
No flow High Your boiler is not starting because it cannot detect water moving through the system to prevent overheating.
Outside sensor Low Your boiler's outdoor temperature sensor is not communicating correctly, which may affect how efficiently the system adjusts your heating based on the weather.
Overheat High Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.
OVERHEAT FAULT High Your boiler has become too hot and has automatically shut down to prevent damage to the internal components.
Pump High Your boiler has stopped heating up because the water is not being pushed through the pipes as it should be.
PUMP FAULT High Your boiler has stopped heating up because the water is not being circulated through the system correctly.

Ideal Concord CXC 48 116 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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