5 pulses High
Your boiler has been left in a manual testing mode after a recent service or inspection, which is preventing it from running normally.
Technical description: Check service mode switch is in max position
Typical repair cost: £0-80 (including labour)
DIY fix possible
Locate the internal control dials on the front of the boilerIdentify the service 'chimney sweep' switch or adjustment dialEnsure any test switches are turned back to the 'off' or 'normal' position rather than 'max'Reset the boiler by pressing the reset button for five seconds
Protect yourself from future repair bills
A boiler cover plan would cover faults like 5 pulses — no call-out fees, no surprises.
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