Likely causes
- Any repeating fault, most often ignition, flame loss or overheat
- Repeated resets by the householder
What you can safely check
- Stop resetting and wait at least 15 minutes
- Note the code that was showing before L5 appeared and tell us when you call
- After 15 minutes, reset once; if the boiler locks out again, leave it and call us
What our engineer does
We read the fault history from the boiler and fix the fault that is causing the repeated lockouts. Anything involving the gas supply, gas valve, combustion chamber, flue, fan, PCB or heat exchanger must be left to a Gas Safe registered engineer and must not be attempted by the householder.
Models this applies to: Ideal Logic, Ideal Logic+, Ideal Logic Max, Ideal Vogue, Ideal Vogue Max, Ideal Independent, Ideal i-mini.
Boiler repairs from £90
Diagnosis and a fixed price before the repair. Most faults fixed on the first visit. Gas Safe 925538.
Other Ideal codes
Guidance only. Fault codes vary by model and firmware; anything involving gas, the flue, the fan, the gas valve, the PCB or the heat exchanger must be done by a Gas Safe registered engineer.
