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Replacing a non-programable thermostat for electric baseboard heater with model CT410B. This is a 4 wire thermostat replacement for a previous 2 wire. Directions indicate that I can do this. I connect wires L1 and T1 to 2 wires from wall [both hot]. Thermostat is not working. Also there is no place to connect ground wire from wall to thermostat. 2 unused wires are just insulated [L2 and T2] Thanks for any advice.

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If you take thermostrat back off and connect the wires together will baseboard heater get hot. If not you may have bad heater. If it gets hot your new tstat may be bad. The way you have it wired is correct. Most line voltage tstats have a ground screw. Your 's may not but will work without one .

Posted on Jan 24, 2009

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