Hot water loss
If you have no hot water a number of things could possibly be the cause. If you’re suffering from hot water loss you can follow the steps in this article to try and fix the problem. If you’re not confident with DIY contact a qualified engineer for further assistance.
Check the power
Ensure that the power supply to the boiler is on, and that the fuse is working correctly. If you find that the fuse has blown, you can replace this yourself to see if this fixes the problem. If a new fuse doesn’t help, the problem may be of a more serious nature meaning it’s probably worth contacting a qualified heating engineer.
Check the supply
Make sure that the gas or oil supply is turned on. If you suspect a problem with your gas supply, contact your gas supplier. If you use oil, check there’s enough oil in the tank by reading the gauge.
Check the programmer & thermostat
Ensure that the programmer is in the 'on' position and that the thermostat is turned up high enough.
Check the pump
Have a quick check to make sure that your pump is running by feeling the side of the pump for motion. If it doesn't appear to be running, it's best to call a professional electrical engineer who’ll be best placed to fix the fault.
Check the pilot light
If your boiler has a pilot light, check that it is lit. If it's switched off, consult your manufacturer's manual, or there may be some instructions on a sticker located on the boiler panel with directions on how to relight it.
If none of these checks solve the problem then it's time to call in a Gas Safe Registered heating engineer.