Ideal Boiler Error Codes

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Ideal Logic Max System / Logic Plus System Boiler Error Codes

Fault DescriptionSystem Behaviour
L1Flow temperature overheat lockout or no water flow lockout
L2Ignition lockout
LCTurn power off and on
L6False flame lockout
F1Low water pressure
F2, FN or LNFlame loss
F3Fan fault
L4 or F4Control / no flow thermistor fault
L5 or F5Return thermistor fault
F6Outside sensor fault
F7Low mains voltage – contact electricity provider.
F9, L9, F8 or L8Printed circuit board (PCB) unconfigured or fault
FUDifference greater than 50c – check isolation valves are open
No central heatingBoiler problems?
Book an engineer now.
No hot water
No display

Ideal Boiler Error Codes

Fault CodeSystem Behaviour
C0Boiler chip card (BCC) activation fault
C2Boiler chip card (BCC) fault
F1Low water pressure
F2Flame loss
F3Fan fault
F4Flow thermistor fault
F5Return thermistor fault
F6Outside sensor failure
F7Low mains voltage
F9Unconfigured printed circuit board (PCB)
L1Flow temperature overheat or no water flow
L2Flame loss
L55 boiler resets in 15 minutes
L6False flame lockout

Ideal Logic Max & Logic Plus Regular Boiler Error Codes

Fault CodeSystem Behaviour
C0Boiler chip card (BCC) activation fault
C2Boiler chip card (BCC) fault
F1Low water pressure
F2Flame loss
F3Fan fault
F4Flow thermistor fault
F5Return thermistor fault
F6Outside sensor failure
F7Low mains voltage
F9Unconfigured printed circuit board (PCB)
L1Flow temperature overheat or no water flow
L2Flame loss
L55 boiler resets in 15 minutes
L6False flame lockout

Ideal Logic Max Plus Combi Boiler Error Codes

Fault DescriptionSystem Behaviour
Overheat lockoutBleed radiators, refill system to 1.0 bar, check that radiator and boiler valves are open and reset boiler. If fault continues book an engineer.
Ignition lockoutCheck gas appliances work and restart boiler.
Too many restarts5 starts within 15 minutes. Turn power on and off.
Flame on before gas onFalse flame lockout.
Water pressureWith boiler off and system cold fill system to 1.0 bar and bleed radiators if fault continues contact an installer.

Ideal Vogue Boiler Error Codes

Fault DescriptionSystem Behaviour
Too many resets5 restarts within 15 minutes
Flame on before gas valve onFlame on before gas valve is on
Flow thermistor faultFlow thermistor error
Low mains voltageLess than 185v to boiler then check voltage at boiler mains in if mains voltage is okay pump needs replacing
Low water pressureLow water pressure
Flow return reversedCheck if the flow thermistor is correctly clipped to pipe. If not, replace flow thermistor.
Printed circuit board (PCB) recently replacedReset boiler
Pump rotor blockedUnblock pump
Flow temperature setpoint cannot be increased to 80cCheck flow and return thermistors securely clamped to pipes check flow and return thermistor
Overheat lockout errorBoiler problems?
Book an engineer now.
Ignition lockout
Flame loss
Thermal fuse lockout
Outside sensor fault
Return thermistor fault
Fan fault
Printed circuit board (PCB) error
No central heating but domestic hot water working
No hot water but central heating working
No water flow fault
No water flow fault

Ideal Boiler Error Descriptions

Fault DescriptionCause
Thermal fuse lockoutReset the boiler
Too many boiler resets5 resets within 15 minutes. Turn power off and on.
Printed circuit board (PCB) replaced incorrectlyEnsure the boiler chip card (BCC) is fitted correctly.
Low mains voltageLess than 160V to boiler. Contact electricity provider.
Low water pressureIncrease system pressure to 1.5 bar
Flow/Return reversedCheck if flow thermistor is correctly clipped to pipe. Replace flow thermistor.
Printed circuit board (PCB) replacedReset the boiler
No connection to primary printed circuit board (PCB)Unblock pump
Pump rotor blockedNo connection to primary printed circuit board (PCB)
Flow temperature setpoint cannot be increased to 80ºCEnsure flow temperature is not limited within installer mode
Pump runs during the nightEnsure system frost protection temperature setpoint isn’t set too high
Has the printed circuit board (PCB) just been replaced?Reset the boiler
Are the boiler, central heating and hot water systems filled with water? Are all isolation valves and radiator valves open?Fill and vent the system and open all isolation valves, then reset the boiler
Is the Flow/Return differential across the boiler in excess of 30cCheck the flow and return thermistors
Check that the pump is rotating freely.Replace the pump, then reset the boiler
If the boiler is reset, does it ignite for a short time and then extinguish?Check the detection electrode and associated harness for continuity, visual condition and position. Check if the condensate pipe is blocked.
Is the gas pressure avaliable at the boiler > 18mBarCheck gas supply and rectify fault
Is 215Vdc avaliable at the gas valve during ignition?Check wiring from gas valve to printed circuit board (PCB) and replace if necessary, otherwise replace the main PCB
Unplug the gas valve – is the resistance between the pins between 1kW and 10kW?Replace gas valve
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