Ideal Boiler Error Codes
If you’re experiencing an issue with your Ideal Boiler, use our ideal Boiler Error Codes section to search by Boiler Make and Error Code to find out what the fault is.
Please enter the model name and error code:
General Boiler Error Codes
Error Code: 0
Possible Cause: The boiler is in standby mode awaiting either a central heating call or hot water demand
Error Code: C
Possible Cause: The boiler has a call for central heating but the appliance has reached the desired temperature set on the boiler
Error Code: D
Possible Cause: The boiler has a call for hot water but the appliance has reached the desired temperature set on the boiler
Error Code: d
Possible Cause: The boiler is operating in hot water mode
Error Code: F
Possible Cause: The boiler is operating in frost mode
Error Code: C0
Possible Cause: Boiler chip card (BCC) activation fault
Error Code: C2
Possible Cause: Boiler chip card (BCC) fault
Error Code: F1
Possible Cause: Low water pressure
Error Code: F2
Possible Cause: Flame loss
Error Code: F3
Possible Cause: Fan fault
Error Code: F4
Possible Cause: Flow thermistor fault
Error Code: F5
Possible Cause: Return thermistor fault
Error Code: F6
Possible Cause: Outside sensor failure
Error Code: F7
Possible Cause: Low mains voltage
Error Code: F9
Possible Cause: Unconfigured printed circuit board (PCB)
Error Code: L1
Possible Cause: Flow temperature overheat or no water flow
Error Code: L2
Possible Cause: Flame loss
Error Code: L5
Possible Cause: 5 boiler resets in 15 minutes
Error Code: L6
Possible Cause: False flame lockout
Logic Max System / Logic Plus System
Error Code: L1
Possible Cause: Flow temperature overheat lockout or no water flow lockout
Error Code: L2
Possible Cause: Ignition lockout
Error Code: LC
Possible Cause: Turn power off and on
Error Code: L6
Possible Cause: False flame lockout
Error Code: F1
Possible Cause: Low water pressure
Error Code: F2, FN or LN
Possible Cause: Flame loss
Error Code: F3
Possible Cause: Fan fault
Error Code: F4 or L4
Possible Cause: Control / no flow thermistor fault
Error Code: F5 or L5
Possible Cause: Return thermistor fault
Error Code: F6
Possible Cause: Outside sensor fault
Error Code: F7
Possible Cause: Low mains voltage – contact electricity provider.
Error Code: F8 or L8 / F9 or L9
Possible Cause: Printed circuit board (PCB) unconfigured or fault
Error Code: FU
Possible Cause: Difference greater than 50c – check isolation valves are open
Logic Max Plus Combi
Error Code: Overheat lockout
Possible Cause: Bleed radiators, refill system to 1.0 bar, check that radiator and boiler valves are open and reset boiler.
Error Code: Ignition lockout
Possible Cause: Check gas appliances work and restart boiler.
Error Code: Too many restarts
Possible Cause: 5 starts within 15 minutes. Turn power on and off.
Error Code: Flame on before gas on
Possible Cause: False flame lockout.
Error Code: Water pressure
Possible Cause: With boiler off and system cold fill system to 1.0 bar and bleed radiators if fault continues contact an installer.
Vouge
Error Code: Too many resets
Possible Cause: 5 restarts within 15 minutes
Error Code: Flame on before gas valve on
Possible Cause: Flame on before gas valve is on
Error Code: Flow thermistor fault
Possible Cause: Flow thermistor error
Error Code: Low mains voltage
Possible Cause: Less than 185v to boiler then check voltage at boiler mains in if mains voltage is okay pump needs replacing
Error Code: Low water pressure
Possible Cause: Low water pressure
Error Code: Flow return reversed
Possible Cause: Check if the flow thermistor is correctly clipped to pipe. If not, replace flow thermistor.
Error Code: Printed circuit board (PCB) recently replaced
Possible Cause: Reset boiler
Error Code: Pump rotor blocked
Possible Cause: Unblock pump
Error Code: Flow temperature setpoint cannot be increased to 80c
Possible Cause: Check flow and return thermistors securely clamped to pipes check flow and return thermistor