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TekmarNet 4 Thermostat 538 reading Air temp Wrong

nomorecash
nomorecash Member Posts: 1
in Thermostats and Controls

I have a TekmarNet 4 Thermostat 538 that has suddenly started to read the wrong air temperature. The room is easily 65-70 F, yet the screen is reading 33 F. This is now sending a demand for heat all the time. Second possible related problem is the Tekmar 423 unit is flashing a warning message but there is no code associated with it.

What steps should I do to isolate the problem? I think they both maybe related but the problem is with the Thermostat.

Suggestions? Thanks for any and all help.

Comments

  • Big Ed_4
    Big Ed_4 Member Posts: 3,112

    Maybe a bad sensor in the Tekmar unless it was mounted on a outdoor wall ….

    ar

    There was an error rendering this rich post.

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