Ideal boilers are well-known for their dependability and efficiency, but, like any sophisticated heating system, they can occasionally fail. Understanding the fault codes shown on your Ideal boiler is important for troubleshooting and maintenance, which could save you time and money on unnecessary callouts.
Understanding these codes helps you make informed decisions about when to call an engineer. If you prefer speaking to our plumbers in Dagenham, Hornchurch and Romford, get in touch with us by calling us on 01708444685.
Ideal Boiler Fault Codes
| Error Code | Issue | How to Fix |
|---|---|---|
| F1 | Low Water Pressure |
1. Check the pressure gauge (should be 1-1.5 bar) 2. Use a filling loop to repressurise if below 1 bar 3. Reset boiler If pressure drops frequently, contact an engineer |
| F2 | Flame Loss |
1. Check gas supply is on 2. Check other gas appliances 3. Reset boiler A professional inspection is required if persistent |
| F3 | Fan Fault |
1. Turn off boiler 2. Wait a few minutes 3. Reset boiler Requires immediate professional attention if persistent |
| F4/F5 | Flow/Return Temperature |
1. Check radiator valves are open 2. Check for obvious blockages 3. Reset boiler Engineer inspection is needed if the problem continues |
| F6 | Outside Sensor |
1. Check sensor connection is accessible 2. Reset boiler Professional repair is likely needed |
| F7 | Low Mains Voltage |
1. Check other appliances 2. Check the fuse box 3. Contact an electrician if the widespread issue |
| F9 | PCB Fault |
Requires professional repair Do not attempt DIY fixes |
| L1 | Flow Temperature Too High |
1. Check system pressure 2. Bleed radiators 3. Reset boiler Contact the engineer if persistent |
| L2 | Ignition Lockout |
1. Check gas supply 2. Reset boiler An engineer needed if the problem continues |
Never attempt to repair gas appliances yourself. Always use a Gas Safe registered engineer for any repairs involving gas or internal boiler components.
Contact Expert Plumbers in Hornchurch, Dagenham and Romford
Simply call our team on 01708444685 and we'll be happy to help.
