BoilerFaultCodesYour boiler's main control chip is not making a proper connection, meaning the 'brain' of the appliance cannot communicate correctly.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Internal fault: Code switch on IPM in intermediate position.
What causes this fault?
This fault occurs when the boiler's memory chip, known as a code plug, is not physically seated correctly or has developed a hardware failure. The most common reason is that the chip has vibrated loose or the main circuit board can no longer read the specific programming required to run your boiler safely.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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A boiler cover plan would cover faults like Fault 02 / 42 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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