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Ideal
Fault Codes
Ideal
Listed below are the common Ideal fault codes as described by the boiler manufacturer along with a possible cause.
Ideal Logic Max System / Logic Plus System Boiler Error Codes
| Fault Description | System Behaviour |
|---|---|
| L1 | Flow temperature overheat lockout or no water flow lockout |
| L2 | Ignition lockout |
| LC | Turn power off and on |
| L6 | False flame lockout |
| F1 | Low water pressure |
| F2, FN or LN | Flame loss |
| F3 | Fan fault |
| L4 or F4 | Control / no flow thermistor fault |
| L5 or F5 | Return thermistor fault |
| F6 | Outside sensor fault |
| F7 | Low mains voltage – contact electricity provider. |
| F9, L9, F8 or L8 | Printed circuit board (PCB) unconfigured or fault |
| FU | Difference greater than 50c – check isolation valves are open |
| No central heating | |
| No hot water | |
| No display |
Ideal Boiler Error Codes
| Fault Code | System Behaviour |
|---|---|
| C0 | Boiler chip card (BCC) activation fault |
| C2 | Boiler chip card (BCC) fault |
| F1 | Low water pressure |
| F2 | Flame loss |
| F3 | Fan fault |
| F4 | Flow thermistor fault |
| F5 | Return thermistor fault |
| F6 | Outside sensor failure |
| F7 | Low mains voltage |
| F9 | Unconfigured printed circuit board (PCB) |
| L1 | Flow temperature overheat or no water flow |
| L2 | Flame loss |
| L5 | 5 boiler resets in 15 minutes |
| L6 | False flame lockout |
| Fault Code | System Behaviour |
|---|---|
| 0 | The boiler is in standby mode awaiting either a central heating call or hot water demand |
| C | The boiler has a call for central heating but the appliance has reached the desired temperature set on the boiler |
| D | The boiler has a call for hot water but the appliance has reached the desired temperature set on the boiler |
| C | The boiler is operating in central heating mode |
| d | The boiler is operating in hot water mode |
| F | The boiler is operating in frost mode |
Ideal Logic Max & Logic Plus Regular Boiler Error Codes
| Fault Description | System Behaviour |
|---|---|
| L1 | Flow temperature overheat lockout or no water flow lockout |
| L2 | Ignition lockout |
| LC | 5 restarts within 15 minutes |
| L6 | False flame lockout |
| FA | Flow return reversed |
| FD | No water flow |
| F2, FN or LN | Flame loss |
| F3 | Fan fault |
| L4 or F4 | Control / no flow thermistor fault |
| L5 or F5 | Return thermistor fault |
| F6 | Outside sensor fault |
| F7 | Low mains voltage Contact electricity provider |
| F9, L9, F8 or L8 | Printed circuit board (PCB) unconfigured or fault |
| FU | Diff greater than 50c check isolation valves are open |
Ideal Logic Max Plus Combi Boiler Error Codes
| Fault Description | System Behaviour |
|---|---|
| Overheat lockout | Bleed radiators, refill system to 1.0 bar, check that radiator and boiler valves are open and reset boiler. If fault continues call an Engineer |
| Ignition lockout | Check gas appliances work and restart boiler. |
| Too many restarts | 5 starts within 15 minutes. Turn power on and off. |
| Flame on before gas on | False flame lockout. |
| Water pressure | With 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 Description | System Behaviour |
|---|---|
| Too many resets | 5 restarts within 15 minutes |
| Flame on before gas valve on | Flame on before gas valve is on |
| Flow thermistor fault | Flow thermistor error |
| Low mains voltage | Less than 185v to boiler then check voltage at boiler mains in if mains voltage is okay pump needs replacing |
| Low water pressure | Low water pressure |
| Flow return reversed | Check if the flow thermistor is correctly clipped to pipe. If not, replace flow thermistor. |
| Printed circuit board (PCB) recently replaced | Reset boiler |
| Pump rotor blocked | Unblock pump |
| Flow temperature setpoint cannot be increased to 80c | Check flow and return thermistors securely clamped to pipes check flow and return thermistor |
| Overheat lockout error | Call an Engineer |
| 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 Description | Cause |
|---|---|
| Thermal fuse lockout | Reset boiler |
| Too many boiler resets | 5 resets within 15 minutes. Turn power off and on. |
| Printed circuit board (PCB) replaced incorrectly | Ensure the boiler chip card (BCC) is fitted correctly. |
| Low mains voltage | Less than 160V to boiler. Contact electricity provider. |
| Low water pressure | Increase system pressure to 1.5 bar |
| Flow/Return reversed | Check if flow thermistor is correctly clipped to pipe. Replace flow thermistor. |
| Printed circuit board (PCB) replaced | Reset boiler |
| No connection to primary printed circuit board (PCB) | Unblock pump |
| Pump rotor blocked | No connection to primary printed circuit board (PCB) |
| Flow temperature setpoint cannot be increased to 80ºC | Ensure flow temperature is not limited within installer mode |
| Pump runs during the night | Ensure system frost protection temperature setpoint isn’t set too high |
| Has the printed circuit board (PCB) just been replaced? | Reset 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 boiler |
| Is the Flow/Return differential across the boiler in excess of 30c | Check the flow and return thermistors |
| Check that the pump is rotating freely. | Replace the pump, then reset 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 > 18mBar | Check 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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