Self diagnose your boiler faults.
Ideal boilers are one of the 5 top boiler brands for reliability. If you have a Ideal boiler is experiencing issues, it will let you know by displaying a fault code on the front display, you will find the fault code below, if you need a boiler engineer - call us.
The L2, Blank Screen, F1 and F2 are the most popular Ideal boiler fault codes. .
Typically the most common is the L2 fault code. The L2 fault code has several causes attached to it such as failing to ignite, loud noise when igniting and more (See below) – If your boiler has locked out and wont reset, you will need a boiler repair.
Another common Ideal boiler fault is the F2 fault – Flame loss. The F2 has many possible causes which include; Gas pressure, No gas supply, Faulty Fan, Faulty electrical components – PCB or Pump.
| Fault/Error Code | Possible Cause |
|---|---|
| L1 | Water flow – Loss of water / lack of water Reset boiler |
| L2 | Ignition lockout – Common – The cause behind this will need to be identified Engineer required |
| L3 | Thermistor fault – L3 typically indicates that someone has changed the printed circuit board. Wrong boiler chip Engineer required |
| L9/LA/H9/HA | Boiler Overheating – L1 Reading Could indicate that the temperature on your resistance reading is too high, Bleed your radiators or call a boiler engineer |
| LF | Ignition fault – Boiler may have locked out – Engineer required |
| L5 | Boiler fault – Someone may have reset the boiler 5 times in 15 minutes. Reset boiler at the fuse spur. Call a boiler engineer if needed |
| L6 | Flame fault – Flame before gas fault – Reset boiler. |
| FD | Boiler faults – Water – Water flow OR pump fault – fault during installation Engineer required |
| F1 | Low water pressure – Boiler system doesn’t have enough water. Re-pressure to 1.5 Engineer required |
| F2 | Flame fault – This usually means that there has been a flame loss during operation. This issue could be caused by deeper system errors such as incorrect gas pressure, an issue with your flue, a faulty gas valve, an incorrect adjustment of a valve or a fan fault. Engineer required |
| F3 | Fan fault – Loose or damaged fan. Loose or damaged connections Engineer required |
| F4 | Thermistor fault – F4 fault code tends to signify a problem with your boiler’s flow thermistor. Engineer required |
| F5 | Thermistor fault – Faulty NTC return thermistor. Engineer required |
| F6 | Sensor fault – System’s outside sensor is broken or faulty. Engineer required |
| F7 | Low voltage – The voltage to the boiler has dropped below 190vac. Engineer required |
| F9 | PCB Fault – The F9 fault code on your Ideal boiler typically relates to an unconfigured printed circuit board (PCB). Engineer required |
| C2 | Boiler Chip fault – The boiler chip card has an internal error or an activation fault. Engineer required |
| C0 | signal issue fault – Pump overrun due to poor heating circulation. Thermostats signals could be cutting in and out. Engineer required |
| NO DISPLAY | PCB – There is an issue with your printed circuit board. Engineer required |
| NO/POOR HOT WATER | Hot Water – If your heating is working but your hot-water is not being delivered as usual, it typically won’t be a fault with the boiler. Engineer required |
| NO/POOR HEATING | Central Heaeting – If your DHW (domestic hot water) is okay, this is not typically a fault with the boiler, but instead a problem with your radiators. Engineer required |
| HIGHT GAS BILLS | BOILER – Check your boilers efficiency label. How old is the boiler? Invest in a new A-rated heating system |
Head Office:
THS Plumbing & Heating Northampton
3 Sunningdale Close
Northampton
NN2 7LR
Tel: 01604 212732
Open: Monday-Sunday 7:30am - 10:00pm
