Electrical noise from Salus RT520TX

[raine]

Just had a new combi boiler fitted for heating & HW. Plumber supplied a wireless (battery-powered) Salus RT520TX thermostat / controller.

The wireless stat is emitting a very high-pitched electrical-type whining noise (a bit like you hear from a plugged-in phone charger when no phone is connected) every time the LCD display is lit.

I also accidentally entered the "test" menu and had it run through that cycle (whatever that does!), and the noise was even more apparent.

Has anyone else experienced this noise with a Salus or other wireless stat? Should I be worried?

 

[Deleted member 267285]

Get your installer back, and if he doesn't know what it is, he should contact Salus.

 

[dilalio]

As it was supplied by the installer, it's him you need to call.

 

[stem]

This is common, I'm pretty sure that they all do it, but as you say only when any of the buttons are pressed that causes the display to illuminate.

 

[Nozzle]

It's the driver that drives the back light - there's nothing the installer can realistically do about it, 'cept put in a different brand

(Edit - I have a Time Guard unit, which also whistles. Have beside clock which also does it when the back light is energised too)

Nozzle

 

[raine]

Great, thanks for the replies. I won't worry too much about it in that case.