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What shape is your tank? How does the level compare with last year's? Your Apollo, as will all sight indicators, will indicate the lwevel of oil in the tank. Depending on the shape of your tank, each bar will represent a different quantity of oil. Fror instance, on a round tank, the volume of...

Close the flow valve and bleed again, releasing a couple of litres of water. You may find an airlock on the return and bleeding with both valves open will not releive this.

The pins should be out for the timer to be on, but if the clock does not move then nothing will happen,

Plug the socket and make a manual connection until you can fimd a replacement. I.I.R.C. Grant did away with these units on their boilers. As long as you keep an eye on the pressure gauge, it's hardly necessary.

An LPG water water only heats up the water passing through the taps, so no radiator faciity.

If you can only get the right value as one without the stud, then just attach it to the existing capacitor with cable ties until you can get the correct one

Without a flue gas analyser, it is probably not possible to effect a lasting solution, but to see you over the holiday, look at the service instructions in the manual, and remove the access panel and baffles, clean them, and clean out the combustion chamber and brush out the flue. Reassemble and...

The usual cause of bearing failure is a leaking pump shaft seal. They are dry bearings and don't like being injected with Kerosene at up to 150 psi.

fit a new pipe.

Jam the pump drive in the back of the motor and then turn the fan on the shaft with a few driops of WD or similar applied to the centre of the fan. A bit of back and forth will loosen it. Do not try to lever it.

What happens if you switch the burner on with the new capacitor and you flick the fan? Just be ready to switch off quick. what rating capacitor did you get?

Quicker, with the power off is to slacken the jubilee clip on the air hose and flick the fan with a screwdriver.

Look at page 25 0f the installation manual.

How many is a few seconds? If it is normal prepurge, then solenoid coil could be suspect, but at the same time, the spark is also generated, so it could be either, coil or control box.

Turn the boiler stat down to reduce the very hot water coming into the rads. Check the flow and return temps of the rads to ensure they are balanced for temperature drop across the reads.

Very relevant, not necessarily in the batch in use, but from batch to batch. Different viscosity will have different calorific value, and temperature can affect the viscosity.

If your system is an open system you will have a header tank in the loft, Check that this has water in it.

Would you not be able to use an iso valve on each feed and operate them manually? Don't forget you need non return valves on each feed.

For the small continuous flows that are needed on such a heater, a Toby type valve as used on vaporising cookers or fires is the most reliable solution, but that would require a positive head to the feed. That would either be by gravity, or maybe a small electric pump as used in many marine...

Might be time to think of a new boiler if yours is that old it is permanent pilot.