This question is regarding Triton T90xr Pumped - Shower Spares

Triton T90xr - New heater unit not heating water.

The shower was run with with no water coming through and the heater unit burnt through and started leaking. A new heater unit has been fitted and is not heating. I tested the heater unit in another T90xr and it works fine. The manual says the unit is fitted with a non-resettable over-

temperature safety device.



What part do I need to replace.



Thanks
Asked 11 years ago by Anonymous

I think you mayhave a faulty Thermal Cut Out (TCO).

A faulty TCO will have nocontinuity across the two terminals (The black thing on top of the heating tank)

Therefore a good TCO will have power at bothconnections and a faulty TCO will have power at only one.

(Thefunction of the TCO is, if the water over heats it cuts the power off to theelements until the water cools, this can take up to15mins)

SeeVideo:

http://www.youtube.com/user/showerdoc#p/u/2/_zi8JbEMYMs

After fitting a new TCO

Whenfitting a new TCO listen to the shower, after it has completed its first on/offcycle, if when it is switched off you hear it continuing to heat (Noise like akettle starting to boil) this will mean that there is a switch or a relay thatis stuck in the on position, this is keeping an element energised and this isprobably what caused the original TCO to fail.

If thisis the case replace the faulty switch or relay and make sure that you switch theshower off at the isolating switch when the shower is not in use because thismay cause the new TCO to fail.

Answered 11 years ago by Anonymous

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