BoilerFaultCodes.com
0 Low Information

Your boiler is working perfectly and is simply waiting for you to turn on your heating or hot water.

Monitor it

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 in standby mode awaiting either a central heating call or hot water demand

What causes this fault?

This is not actually a fault, but a status indicator showing the boiler is powered on and ready to work. It appears because there is currently no request from your thermostat to turn on the heating and no one is using the hot water taps. Your boiler is simply resting in an energy-saving state until it is needed.

This code is more frequently seen during the summer months when the central heating is turned off for long periods.

Typical repair cost £0 (including labour)

DIY fix possible

Turn up your room thermostatEnsure your heating programmer or timer is set to 'On'Open a hot water tap to trigger the boiler

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 0 — no call-out fees, no surprises.

Top rated
OpenFix
Boiler & heating care plans
Get a quote →
Hometree
from £12.95/month
Get a quote →
HomeServe
from £8.00/month
Get a quote →

Affiliate links — we may earn a commission at no extra cost to you.

Related fault codes