Help with MyPin TD4 Input reading UUUU

[Mirilis]

I did a search on here and found a couple similar threads but they never had reslutions. Does anyone know how to fix the issue below:


I bought a 1/2 Pt100 probe and mounted it in my new system.

Here is the link

There are 2 white wires and 1 red wire. I wired the white wires to 7 and 10, and the red wire to 9.

Then I adjusted the input type toe Pt

It just displays UUUU on the controller and I am not sure why. Did I wire it wrong?

 

[iijakii]

Yes, you have it wired incorrectly. Here's what worked on mine: I had the 2-wires going to 7 & 10, and then I had to jumper 8 and 9 together.

The bad news is there seem to be more than one version of these - do some searching in this sub if that doesn't work for you... people have correctly wired the RTD more than one way.

 

[Mirilis]

That did it.. Thanks

 

[augiedoggy]

yeah... the weird thing is I removed my jumpers when I rewired my TD4's because I didnt need them...

 

[Mirilis]

they are a bit screwy.. but once I jumpered 8/9 then i turned it on and it went between 69.2 to 69.5 which is very believable room temp for my house as the thermostat is usually set at either 68 or 70 (depending on how cold my wife is)

 

[BitterSweetBrews]

I have a similar issue with a different thermistor. I picked up some NTC 10K thermistors. They do not read correctly. Does the PD4 support 10K thermistors? If so how? Luckily, they were cheap and I can use them on another temp probe. Thanks.

 

[Brumateur]

Mypin and as far as I know Auber PIDs dont support NTK sensors.