If your boiler is not working as you’d expect there a few simple checks can be made before you call your engineer. You can always try the following but never exceed your own ability. If you are unsure of what should happen then make sure do not attempt the action because you could simply make your "problem" worse:
If you have tried all or some of the above and the boiler still fails to fire call your normal engineer. If you do manage to get your system going then we would still recommend that you ask your engineer to attend to professionally identify and rectify the cause of the failure.
‘Boiler Lockout’ What is it and why does it occur?
When a boiler recognises a fault, most commonly through its flame sensor, it has a safety mechanism to automatically lock-down to prevent any further damage. This safeguard is referred to as lockout in oil fired boilers. As well as recognising a problem, this safeguard is designed to prevent any additional problems, and one part of the lockout is the interruption of your oil supply. Therefore if your oil fired boiler is in lockout then it will need to be reset, before it will operate again.
If you you’re unsure if your boiler is in lockout mode, check for:
An error code on the digital boiler display or boiler control panel.
A flashing red or green light, or an illuminated orange light.
The causes of an oil boiler lockout vary. Older boilers can be more prone to boiler lockout due to general wear and tear and neglected boilers can lockout because they have not been adequately serviced or maintained . Having your boiler serviced regularly can increase reliability and performance.
Another cause could be a blockage or restriction in the system that disrupts the oil feed pressure. A blocked filter on your tank, or a failing fuel pump can reduce the required fuel pressure for efficient safe atomisation and burning. Sometimes you may have simply run out of oil!
You can take your own steps to restart a boiler, if you have adequate oil in your tank, and many boiler manuals list these. But remember: Do not exceed your own ability. A persistent problem will probably require a professional solution.
A Watchman is an automated oil monitoring device which can be fitted to your home heating oil tank and sends a radio signal to a digital readout in your house. Watchman's tend to have replaced sight tubes on most domestic heating oil tanks over the last few years. It allows you to easily monitor the oil levels in your tank and prevent run outs.
Once the receiver detects a low battery a warning message is displayed on the unit in the home. It shows the oil level in the tank plus a constantly flashing warning triangle.
The lithium battery fitted to your Watchman will have a long service life, but it will eventually become exhausted and will need replacing.
The battery model required is: VARTA CR2430, and they are available locally from good photographic shops or chemists or can be purchased online.
F = Full
Red Light Flashing with no level = No Signal
Red Flashing Light = Tank is low on fuel
Fluid Level Low & “BAT LOW” = New power tube needed
C = Connection fault replacement needed
Further information can be found here. Watchman Ultrasonic Installation Instructions