Ideal LC Fault Code: Five Resets Within 15 Minutes
Hertfordshire, Bedfordshire & Cambridgeshire
LC on an Ideal boiler means the reset button has been pressed five times within fifteen minutes, so the appliance has stopped accepting resets.
LC is not really a fault in itself. It is the boiler telling you that whatever you have been resetting has not gone away.
What LC actually means
Boilers limit how many times they will let you clear a lockout in a short window. It stops a genuine fault being repeatedly cleared and ignored.
So LC is a symptom of something else. There was an original fault code before you started resetting, and that is the one that matters.
What you can safely check yourself
If you have reached LC, stop resetting. Whatever was wrong has not fixed itself and repeatedly clearing it can make diagnosis harder for whoever attends.
The manufacturer’s instruction for LC itself is simply to turn the power off and back on.
Before you do, think back to what the boiler was showing before you started resetting it. That original code is the actual fault, and it is worth writing down.
If the boiler runs after a power cycle and then locks out again on the original code, that is the fault to have looked at.
When to stop, and why
Turn the power off and on once. If the original fault returns, leave it and call an engineer.
What causes it beyond the simple checks
LC has no cause of its own beyond repeated resets. The real question is what code you were clearing. Ignition lockouts, overheat lockouts and flame loss are the usual ones people reset repeatedly.
How Vantage can help
We are Gas Safe registered under 956889 and cover Hertfordshire, Bedfordshire and Cambridgeshire, with an emergency line answered 24 hours a day. Call us on 01462 506374. See also boiler repair and boiler servicing.
Frequently asked questions
How do I clear LC on an Ideal boiler?
Turn the power off at the switch and back on again.
Is LC serious?
On its own, no. What you were resetting to get there may well be.
Why will it not let me reset it again?
Deliberate design. Five resets in fifteen minutes means something is genuinely wrong and the appliance stops you clearing it indefinitely.
Related fault codes
Other Ideal codes: L1 · L2 · L6 · F1 · F2 · F3 · F4 · F5 · F6 · F7 · F8 · F9 · all boiler advice. See also boiler repair.
In Ideal’s own words
The Ideal installation and servicing guide lists LC as: 5 Resets Within 15 Mins
Ideal use different code sets across their ranges and generations. The definition above comes from The Ideal installation and servicing guide. If your boiler is a different model and the code behaves differently, check the manual for your appliance or ring us and we will tell you what it means on your unit.
When to call an engineer
If the checks above have not cleared it, the next steps are engineer work and the boiler should not be reset repeatedly in the meantime. Call Vantage Plumbing and Heating on 01462 506374. We are Gas Safe registered under 956889, the line is answered by a person at any hour of any day, and you get a price before anyone starts.
Need help today?
Call and speak to a person, any hour, any day of the year. Get a fixed price quote or call 01462 506374.
Need help today?
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