Trioton shower as2000x no hot water

[steveroundoak]

Hello guys, newbie here so be gentle......
Right...here goes.....every time i have to drain down hot water system in my house, 13 year old house 2 up 2 down, when i reinstate the hot water i get massive air lock...i clear it out with the cold forced into hot tap via taps under the sink.
It always works after some gentle persuasion.

Only this time after draining down and then getting rid of air, all taps work ok.
Except my power shower.....
Fitted last September.it has worked fine, no problems, until this last drain down.
I have stripped out filters...clean....i have looked at check valves in the shower itself on the inlets..again ok.
I get hot water up to the check valves and a small purge of warm water will occasionally pump through whilst i run the shower.
I have gone through the original commissioning steps as required by Triton instruction.
Again no hot water.

Any ideas guys?????

 

[seco services]

Are you getting a constant good flow from the hot with filter removed ?
Is the hot pipe blanking plug fully in on the non used side of the inlets ?

 

[steveroundoak]

Hello mate,
Thanks for the reply.
Yep, good flow and plugs in place.
Like i said, the shower was working ok up until the point i drained down the hot water system
I can only assume its an air lock, but i'm damned if i can get it to run as before.

 

[seco services]

So good constant flow with filter out.
Have you tried commissioning it with just the hot water valve open and cold closed ? See if you get a good constant flow from the hose.

The only thing in between the inlets and shower hose is the check valves and temp valve.

But even then i've never come across a faulty temp valve and only the odd sticking check valve.

 

[steveroundoak]

Hi again Seco,
Yes i have tried with the cold off and i do get hot water through the shower then.

 

[seco services]

Hi again Seco,
Yes i have tried with the cold off and i do get hot water through the shower then.

So you are getting a good/constant flow through the shower to hose.
Just when the hot/cold are both on the shower won't get hot/warm.

Sounds like the cold is over powering the hot, ie temp valve fault.

 

[steveroundoak]

Thanks once again mate,
Just tried it again, commission with hot water only...
I have 15mm copper running from under floorboards up into shower....
I did think when i put it in it may not have enough oompph...but with the pump it worked fine.
Since September in fact...
What i do notice is running on commission with just hot its fairly quite, but once the cold is introduced it does sound like trapped air in the shower body...
Has me completely miffed....

 

[seco services]

15mm is fine for these as they are only gravity. The pump does the rest.

Providing your hot/cold has even flow when commissioned, ie no air locks, check valves not sticking, filters clean then your only left with the temp control valve.

 

[steveroundoak]

15mm is fine for these as they are only gravity. The pump does the rest.

Providing your hot/cold has even flow when commissioned, ie no air locks, check valves not sticking, filters clean then your only left with the temp control valve.

Thanks Seco,
Its really challenged the old grey matter this one.....
I will give Triton a call then, its only 5 months old, i had a Triton power shower previous to this one, kept the same plumbing as original....
The old one lasted 12 years and i only changed it because i re fitted the whole en suite......
I will update when the guy has been and looked at it...
But once again mate thanks for taking time to share your thoughts....very much appreciated.....

 

[seco services]

Yes it's still under warranty so give them a call.

Don't tell them you used the hose off mains cold for an airlock though

 

[steveroundoak]

Yes it's still under warranty so give them a call.

Don't tell them you used the hose off mains cold for an airlock though

Just a thought mate, but any chance that may have contributed to this fault??

And another quickie....what would you recommend for purging air locks out of the hot water system????

 

[seco services]

Quite poss you damaged the valve seals with mains pressure.
These showers don't like mains water pressures.

By all means do it the way you did but either isolate the shower first at the isolation valves, or if it's the shower pipework airlocked remove the filters first and do it then your not forcing mains pressure into the shower only the pipework.

 

[steveroundoak]

Thanks mate,
I never gave it a thought... it was a late Friday Afternoon job, my darling daughters were moaning the hot tap on the bath was stiff, so i ended up changing the whole lot of them bath and basin...
I was in such a rush it never entered my mind to isolate first.....lesson learnt..
Just hope Triton don't catch on......

 

[seco services]

I never had a triton engineer argue the t*ss.
You say you checked both flows and check valves etc, These units are good for commissioning.
Providing both are ok then theres a fault.

How did you check the check valves as they are in the tubes ?

 

[steveroundoak]

I never had a triton engineer argue the t*ss.
You say you checked both flows and check valves etc, These units are good for commissioning.
Providing both are ok then theres a fault.

How did you check the check valves as they are in the tubes ?

I have a small metal spindle with a small 90 degree bend, i just fed it down the tube and a gave it a very gentle prod.
Both nice and springy..

All i can say about the commissioning is that the cold flow is more than the hot, but then again the cold is coming down and the hot is having to run up so there would be a difference wouldn't there..??