JCI's TE67NP Sensors

[rleo49]

Having a recurring problem with sensors reading excessively high causing over-cooling of space. At first I thought it was a bad sensor, so I replaced it but then it did it again about a month later. Several are doing the same thing. If I don't do anything to them they slowly drop to the actual room temp within a few hours. These have the RJ45 phone jack connectors. Has anyone experienced a similar problem?

[07RoadKing]

I have cut off plug ends and crimped new ones both controller end and sensor end. loose connections equal high resistence which equals high temp.

[berg2666]

the action described above is most likely you problem. The phone jack plugs get shorted together and cause hi temp readings. Positive temperature coefficient sensor.

[rleo49]

I replaced the rj45 on the controller but not on the sensor. I'll do that on Monday, thanks.

[rleo49]

That took care of it, thanks.

[rleo49]

Is it unusual for the warm/cool adjust to be at -0.0?

[dave2142]

There is an obscure problem few know about with platinum stats. I bed your stats are reading about 4 degree high. I do not remember part number for stats think yours is nickel so most likely the rj45. But if you or anyone else runs into it with platinum the fix is to set a -4 offset on the sensor in the controller. Their is a tech doc out there somewhere about it or was when I still worked at JCI

[rleo49]

I noticed that and subtracted the offset. The warm cool adjust does change when manual setpoint is adjusted. Just seems odd.

[simux]

On the Metasys PMI system sometimes the setpoints were in a control system and controlled by a GPL program with a master setpoint elsewhere in the system.