:deadhorse:I have a package unit with electric heat, I put on a new digital t-stat, sometimes it heats then not, fan then not 24v, heat 480 3 ph. went thru 2 stats. Transformer in heat conpartment along with tstat wires anyone have this problem .Im thinking electrical interference from resistence heat.
electric heat
TFoster
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:deadhorse:I have a package unit with electric heat, I put on a new digital t-stat, sometimes it heats then not, fan then not 24v, heat 480 3 ph. went thru 2 stats. Transformer in heat conpartment along with tstat wires anyone have this problem .Im thinking electrical interference from resistence heat.
30YR OLD YORK 5 TON, Invensys 9725i2 stat
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50,203 Posts
I read where that stat has 3heat stages so is there a stage for each strip ? Also have you tryed running the blower in ON mode to see if it shuts off ?
this is a 2 stage heat ;2 stage cool, with stat off heater works well as suppose to , with face of stat on unit works well with all phaeses heat,blower etc, cycles well, then in about 12 or so ,more or less ,light for heat is onwith no heat no fan.jumper out subbase and everything is fine,next time fan light on heat light on ,i have neither fan nor heat, jumper R-W1 again everything fine to this day ,even put new invensys stat on , does same ,very strange thing.
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50,203 Posts
You stated in your first post that maybe the transformer location was a possible cause. Has that transformer always been in the same location ?
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