[gwrightson]

Ash white,
Had a very similar problem few weeks ago, no pressure apart from an initial burst when trigger pulled then pressure dropped to zero, a phone call To Mike Halliday and he gave me the same advise he has already give to you.
undo the filter nr the pump, mine was blocked solid , I cleaned replaced problem solved , the whole proccess 5 minutes.

Have you tried this yet ?

Geoff

[AshWhite]

If you mean the one which is inside the brass 'y' connector, then yes, and it was clear, as were the orifices.

[Glynn]

So as high as you set it meaning up to 1200 ? and will hold it ?.

[AshWhite]

I've put it up to a thousand, and yes it holds it.

[Glynn]

Tell me how you know the orifices are clear ?.

[AshWhite]

I took them out earlier under instruction from martin @ hm, had a lovely spray of hotwater from the secondary

[Glynn]

When you refitted them how tight did you tighten them with , what tool did you remove them with ?.

[AshWhite]

Does anyone knoelw where the temperature sensor is? Because the water is not hitting it until I manually press the nipple on the quick connect

[AshWhite]

24mm 1/2 drive ratchet, not a torque wrench so couldn't tell you how tight, but roughly as tight as they were before they came out?

[Glynn]

So you haven't removed the orricfes at all, what it sounds like you have done is remove the screens.

The orrifices require a 3/16" allen wrench.

Next, stop going on about pressing the nipple within the QC, what sounds like is happening is the probe/nipple has worn down too short for the opposing QC to press it it enough to open it sufficiently enough to work.
Change the QC on the MACHINE and try this.

[AshWhite]

I changed the QC on which connects onto the male of the machine earlier because I suspected that could be a cause, but you think that it could be the male on the machine that is causing the problem?

[AshWhite]

And just because I can't remember how it was working before, does the temp gauge only give feedback when the water is moving?

[Glynn]

Like I said change the QC on the MACHINE.
It's all well and good you pressing in the nipple but thats going to open it more than the opposing QC will especially if the nipple is worn down like it probably is.

[AshWhite]

I'm going to give that a try right this minute!

[AshWhite]

Tried it, still no change. I did notice that the 'heat mode' light was flickering though, then it went out.

[AshWhite]

Bit of a change on 2nd attempt, heat gauge rose all the way, but cold water from my hand tool, which became slightly unblocked after being completely inoperational earlier.

[AshWhite]

All sorted after a day trip to Hydramaster agent in Oxford. Limescale had caused a blockage in the orifice, which caused over heating which blew a valve, and also caused a blocked wand.

Fully descaled, new valve, unblocked wand and a few other bits n pieces while I was there, £150 - problem sorted.

Thanks again for all your help chaps.

Ash

[Glynn]

Tell me how you know the orifices are clear ?.

Glad you got it sorted but next time don't confuse the screens as orrifices.

[AshWhite]

Fair point

[Glynn]

It's a good idea once a week or so to run some clear water rinse through the system i.e. by putting it directly in the fresh water tank. This will keep it free of build up.