Ideal Boiler Fault codes

Ideal Boiler Fault codes

Ideal Heating, with over a century of dependable central heating solutions, occasionally faces challenges. Indeed, even the finest boilers signal through error codes when they’re not operating optimally. Fortunately, some of these error codes point to simple fixes. However, others require the expertise of a Gas Safe registered engineer. Let’s delve into the most common fault codes you might encounter with Ideal boilers, offering insights on how to effectively address them.

Certainly, Ideal Logic boilers, renowned for their reliability and efficiency, may still display fault or error codes signalling an issue. Here’s a brief overview of some common codes and their implications:

F1: Low water pressure – It indicates the system’s water pressure has dropped below the minimum threshold. You can often resolve this by repressurizing the system yourself.

F2: Flame loss – This occurs when the boiler fails to detect a flame when it should be present. It could be due to a variety of issues, ranging from gas supply problems to faulty ignition leads. Professional assessment is advisable.

F3: Fan fault – This code suggests a problem with the fan, which is crucial for removing harmful gases from the boiler. If the fan isn’t working properly, it’s essential to get it checked by a professional.

F4 or L4: Flow thermistor issue – It indicates a problem with the flow thermistor, which measures the water temperature. This issue may affect heating performance and requires professional attention.

F5: Return thermistor fault – Similar to F4, but relates to the return thermistor. It signifies a potential issue with the component that measures the return water temperature. Expert intervention is needed.

F6: Outside sensor failure – This code appears when there’s an issue with the boiler’s external sensor. Such a fault may impact the boiler’s ability to function efficiently in varying weather conditions.

F9: Printed circuit board (PCB) fault – This is a critical error indicating a problem with the boiler’s main control unit. Due to its complexity, a Gas Safe registered engineer must address this issue.

L2: Ignition failure – It signifies repeated unsuccessful attempts to ignite the boiler. Causes could range from gas supply issues to faulty ignition components. Professional diagnosis is required.

L6: False flame lockout – This occurs when the boiler detects a flame when there shouldn’t be one. It’s a safety feature that requires professional investigation.

Each of these codes provides a starting point for troubleshooting. Nonetheless, for more complex issues, especially those involving gas components or the boiler’s internal electronics, enlisting a Gas Safe registered engineer is both safe and necessary. Regular maintenance can help minimize the occurrence of these faults, ensuring your Ideal Logic boiler operates smoothly and efficiently.

 

Fault codeSystem behaviour
0The boiler is in standby mode awaiting either a central heating call or hot water demand
CThe boiler has a call for central heating but the appliance has reached the desired temperature set on the boiler OR The boiler is operating in hot water mode
C0Boiler chip card (BCC) activation fault
C2Boiler chip card (BCC) fault
dThe boiler is operating in hot water mode
DThe boiler has a call for hot water but the appliance has reached the desired

temperature set on the boiler

FThe boiler is operating in frost mode
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 SYSTEM / LOGIC PLUS SYSTEM BOILER FAULT OR ERROR CODES

Fault codeSystem 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
FUDiff greater than 50c check isolation valves are open
No central heatingBoiler problems? Book a boiler engineer now
No hot water
No display

IDEAL LOGIC MAX / LOGIC PLUS REGULAR BOILER ERROR CODES

Fault codeSystem Behaviour
L1Flow temperature overheat lockout or no water flow lockout
L2Ignition lockout
LC5 restarts within 15 minutes
L6False flame lockout
FAFlow return reversed
FDNo water flow
F2 or 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
FUDiff greater than 50c check isolation valves are open
No central heating 

Boiler problems? Book a boiler engineer now

 

No hot water
No display

IDEAL LOGIC MAX PLUS COMBI BOILER ERROR CODES

Fault descriptionSystem Behaviour
Overheat lockoutBleed radiators, refill system to 1.2 bar. Check that all 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 mins. 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, book an engineer.
Too many resets5 restarts within 15 minutes
Flame on before gas valve onFlame on before gas valve is on
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 piper check flow and return thermistor
Overheat lockout errorBoiler problems? Book an engineer.
Ignition lockout
Flame loss
Thermal fuse lockout
Outside sensor fault
Return thermistor
Fan fault
Printed circuit board (PCB) error
No domestic hot water working
Not hot water but central heating working
No water flow fault