BoilerFaultCodesYour boiler is currently increasing its power to meet the demand for heating or hot water, which is a normal operational activity rather than a system failure.
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: The boiler is modulating upwards
What causes this fault?
This code appears when the boiler needs to generate more heat to reach the temperature requested by your thermostat or hot water taps. It is a sign that the internal burner is simply ramping up its intensity to meet the current demand. It does not indicate a system failure or a broken part.
DIY fix possible
No action is required as this code is an operational status indicator.Monitor the display to see if the code clears once the temperature stabilizes.If the boiler appears stuck on this code without producing heat, try a simple reset.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like 270 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Worcester Bosch GB162 is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
Affiliate links — we may earn a commission at no extra cost to you.