BoilerFaultCodesYour boiler is working fine but is simply waiting because your thermostat is turned down or your heating schedule hasn't started yet.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: Room thermostat set lower (boiler not yet heating up)
What causes this fault?
Code 6 indicates that the boiler is in standby mode because it has reached its target temperature or your thermostat is set lower than the current room temperature. It essentially means the boiler is 'at rest' and waiting for a signal that more heat is needed before it fires up again. This is a normal part of the boiler's operation and does not usually indicate a mechanical failure.
This code is frequently seen during shoulder seasons like spring and autumn when outdoor temperatures fluctuate and thermostats are often set lower.
DIY fix possible
Check your room thermostat and turn it up higher than the current room temperature.Verify that your heating programmer or timer is set to 'On' or 'Auto'.Check batteries in wireless thermostats and replace them if they are low.
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A boiler cover plan would cover faults like 6 — no call-out fees, no surprises.
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