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Mira thermal cut-out assembly (TCO).
Product code also known as Mira 1.439.90.5.
Note: Please check that this TCO fits the version of the shower that you have, as there are different versions of the Sport/Jump/Sprint. Please view compatible models by clicking 'this product fits' or see our article on identifying showers and parts for more help.
The Mira thermal cut-out assembly (TCO) (439.90) is a genuine, brand new Mira product, covered by a minimum 1 year Mira manufacturer's guarantee.
Available for same day despatch if ordered before 3:30pm Monday-Friday (otherwise despatching will be on the next working day). For the delivery options available for this product, please add it to your Basket or see our delivery options page.
The Mira thermal cut-out assembly (TCO) (439.90) will fit the following 17 products.
List(s) are sorted by product type and then alphabetically.
Hover overTap any icon below to see a preview of that model.
- Mira Elevate
- Mira Enthuse electric shower
- Mira Essentials Electric (2004-2007)
- Mira Go Electric Shower 10.8kW - White/Chrome
- Mira Go Electric Shower 8.5kW - White/Chrome
- Mira Go Electric Shower 9.5kW - white/chrome
- Mira Go Electric Shower 9.5kW - white/chrome
- Mira Go MK2 Electric shower (2003-2007)
- Mira Go MK3 Electric shower (2007-2013)
- Mira Play Mk 1
- Mira Shore/Isle
- Mira Vie Electric Shower 10.8kW - White/Chrome
- Mira Vie Electric Shower 8.5kW - White/Chrome
- Mira Vie Electric Shower 9.5kW - White/Chrome
- Mira Vie MK1
- Mira Vista
- Mira Zest MK2 (2004-on)
May fit other products.
If you are unsure of your product model, or would like more information, please contact us.
A selection of the latest reviews for the Mira thermal cut-out assembly (TCO) (439.90) can be read below:
Very good product, easy to replace and very good service from shower spares.
Part fixed shower, arrived on time
It was a good choice to use NSS for the purchase of the thermal cut out assembly for my Mira shower. Their web site is easy to navigate and it was easy to process my order which arrived before the stated delivery time, the product was Mira and of the highest quality it was also extremely easy to install. What more could want.
Fitted easily and worked perfect.
Was easy to fit and it did the job
a first class service and fast delivery -
What more can I say 5 star sevice
I needed a TCO for my son's Mira Go shower, I found the exact part on the NSS website, ordered it and the correct part arrived within a couple of days, this is a genuine MIRA part and is an exact match
Quick delivery of the right part at a good price. What more can you ask?
It's great we can get spares for showers, saves a lot of work ( re tiling or moving pipe work) Thanks
fast delivery, easily fitted, litte bit dearer than expected (hence 4 out of 5) but all in all happy with product and service
Easy fix to a Mira shower that couldn't regulate temperature.
Note: remember to turn power off at the mains - not like me... 😬
Perfect communication, item was perfect replacement, smooth transaction ⭐️⭐️⭐️⭐️⭐️
Quick and accurate advise when placing order, simple process plus easy to follow fitting guide included
Graham R Fearnley
correct part delivered as promised, fitted and working.
As advertised a direct replacement for my shower. Sorted the fault out as I could not get hot water.
Do you have a question about the Mira thermal cut-out assembly (TCO) (439.90)?
Click the button below to send a question to one of our expert members of staff and we will email you back a direct response. If we feel the information might be useful to other customers, we will also show your question below for others to see.
I have a Mira Vie shower 8.5 kw, power goes to the shower but there is no heat, I am thinking thermal cut out switch ?
Yes, from your description the thermal switch does need replacing.
My Mira go shower has been working perfectly since we had it installed but recently it has started to get really hot have descaled the shower head and checked the inlet filter it was better for a few days but now even with the heat control down to min. is it almost to hot to get in. could this be the thermal switch ? any help would be appreciated
Have you tried turning the dial down to the first heat setting and starting the temperature dial at cold then turning round to hot? What sort of temperature do you get then?
National Shower Spares
Hi - we have a mira play shower and experiencing some problems. Shpwerbflows perfect but then loses heat intermittently. Sometimes during a shower but sometimes just does not get hot. Could this be the thermal cut out? Curve ball is the shower can start hot then go cold after a few minutes. Leave it for 30 minutes and it gets hot again.
Hello, yes this is most likely to be a thermal switch, it could also be the pressure switch dropping out, you would have to re-create the fault, then test the thermal switch for continuity, open circuit = faulty. Job for an electrician.
My mira play shower has just started to cut out half way through a shower all electrics are working fine I switch it off and leave for 10 mins and then it starts to work again. This doesn't happen every time it is intermittent.
Any help would be great
Hello, if it stops flowing you need a new solenoid, if it stops heating but stays flowing then it is probably the thermal cut out.
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