Troubleshooting a Gas-Fired Hot Water Boiler
Some boilers may have a timer to control the hot water. If your boiler timer controls your hot water, this may be the cause of the problem. Your timer may have been affected by the clocks changing, power supply, back-up batteries failing or even somebody altering the settings without you knowing. Adjusting your timer may resolve the problem.
A guide to small-scale wood fuel (biomass) heating systems This guide has been written by the Wood Fuel South West Advice Service; a project funded by Woodland Renaissance, Areas of Outstanding Natural Beauty in the South West (AONBs) and the Forestry Commission. It is for people interested in finding out more about biomass boiler systems.
The most common reason for your gas boiler pressure being too low is either a water leak somewhere in the system or reduced system pressure as a result of bleeding a radiator. How to find a water leak It is not always easy to find a water leak in your system as there will often be pipework that is not visible.
If your boiler pressure reads less than 1 bar, its possible that you might have lost water from the system, which needs to be replaced. This is where that filling loop (or filling link) comes in again!
What to do if your boiler loses pressure - British Gas
A boiler depends on several different control and monitoring systems to ensure safe operation. One such system monitors the boiler water level and acts to ensure the boiler always has enough water
Top 10 Most Common Boiler Problems | Boiler Guide
Pull the handle of the water feed valve back to allow water to flow into the boiler. Keep a close eye on the water level in your sight glass. When the water has reached an appropriate level, push the handle of the feed valve up to the closed position.