BoilerFaultCodes.com

Ideal Response 80 100 120 Fault Codes

Combi Natural Gas 23.4-35.2 kW 1994-2003 Discontinued
GC Numbers: 47-348-1847-348-1947-348-20

Replaced by: Isar

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

82
Your boiler has stopped working because the internal fan, which safely helps the system breathe, is not spinning.
Gas Safe engineer required · £220-£380
83
Your boiler is receiving power but cannot ignite because it isn't detecting the correct gas pressure required to start the burner.
Gas Safe engineer required · £180-450
84
Your boiler is trying to start up but is failing to create the spark or flame needed to heat your water.
Gas Safe engineer required · £120-280

All 14 fault codes

Code Severity Plain English
82 High Your boiler has stopped working because the internal fan, which safely helps the system breathe, is not spinning.
83 High Your boiler is receiving power but cannot ignite because it isn't detecting the correct gas pressure required to start the burner.
84 High Your boiler is trying to start up but is failing to create the spark or flame needed to heat your water.
85 High Your boiler is struggling to light or keep a flame burning correctly because the gas and air mixture isn't balanced.
CH light on PCB 40 flashing High Your boiler has detected a communication problem or a fault with the sensor that controls your central heating temperature.
HW light on PCB 40 flashing High Your boiler has detected a fault with the temperature sensor that controls your hot water, meaning it cannot accurately measure how hot the water is.
LED 2 on PCB 41 lit High Your boiler is failing to ignite or stay lit, meaning you will not have any heating or hot water until the issue is resolved.
lockout LED 2 ON High Your boiler has tried to light several times but cannot detect a flame, causing the system to shut down for safety.
Low system pressure High Your boiler has stopped working because the water level inside the system has dropped too low and needs topping up.
Mains fuse F2 on PCB 40 blown High Your boiler has lost power because an internal fuse has blown, likely caused by an electrical fault in the pump.
Mains On neon NOT lit High Your boiler has no power and is completely unresponsive, likely due to an electrical supply issue or a blown fuse.
Overheat 'stat tripped High Your boiler has shut down because it detected that the water inside has become too hot, causing a safety switch to trigger.
Secondary fuse F1 on PCB 40 blown High Your boiler has lost power because an internal electrical safety fuse has blown, likely caused by a faulty component or wiring issue.
system pressure gauge below 0.5 bar High Your boiler has stopped working because the water pressure inside the system is too low for it to operate safely.

Ideal Response 80 100 120 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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