Triton Capella - cold!!

[CMTDMoore]

Bought a Triton Capella bar mixer in June, water temp was fine at first. Recently water is constantly lukewarm/cold even at max temp (time of day doesn't make a difference) although pressure is fine. Have tried reducing pressure but no change. Plumber who installed threw away receipt by mistake, Triton engineer coming out next week to look at shower. Glow-worm combi boiler is just over a year old, water from taps (bath and sink) very hot - what are the options?

Only have the one bathroom, one shower, tank is in attic directly above.

Can we do anything in the meantime to solve the problem, or does this sound like an expensive repair job? Have had a look at costs for replacement valves on the internet and they are horribly expensive! If we do need the engineer, can someone please tell me what I need to ask him or what he is likely to say/charge?

 

[Softus]

Plumber who installed threw away receipt by mistake

That's his problem - he's the retailer for the materials that he provided, and should repair or replace them if they break down so soon.

 

[CMTDMoore]

We didn't use a Triton plumber, bought the shower from Argos and used an independent plumber.

Have just tried to adjust the hot water using the "spindle" inside the temp dial - water was lovely and hot last night, now is cooler again (although still warmer than when I first posted the message).

Any ideas?