electric thermostat

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woody18428

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should i get continuity on a thermostat for electirc baseboard heat if it is disconnected ( red & black lead ) ? how do you tell if the thermostat is bad ?? or does this mean it is , shouldnt the termostat be normally open ( no continuity ) ?? could it be a bad stat ?? SORRY IF THIS IS THE WRONG PLACE TO ASK :mad:
 
woody18428 said:
should i get continuity on a thermostat for electirc baseboard heat if it is disconnected ( red & black lead ) ? how do you tell if the thermostat is bad ?? or does this mean it is , shouldnt the termostat be normally open ( no continuity ) ?? could it be a bad stat ?? SORRY IF THIS IS THE WRONG PLACE TO ASK :mad:
Click to expand...

Generally the thermostat is bad if it does not work....:), I always turn them up and check for voltage at the heater...usually the easiest and fastest way to troubleshoot electric heat not working...
 
Woody, line-voltage T-stats come in two flavors:

Single-pole T-stats that only open one side of the 240v supply, and do not have an "off" position on the dial.

Two-pole T-stats that open one side for temperature control, but both sides when switched off, which is marked.

If there are two reds and two blacks, it's a two-pole T-stat; if one of each, single-pole.

If this is tough to trouble-shoot, draw the circuit out on paper, showing the heater as a resistance.
 
rcarroll said:
Keep it simple, a T-stat is only a switch. :smile:
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Unless it is an electronic, programmable thermostat that has no "dial" and the relays would not change state if it has no voltage supplied. Some has internal backup battery that can be tested on ther bench. Has many different functions so it may not immediately switches state if you changed the temperature. (Compressor protection delay, etc.)

So as always open the manual and learn about the unit before troubleshooting. There is often more information available from the manufacturer on-line than in the box.:cool:

Motto: there are very few simple questions.
 
weressl said:
Unless it is an electronic, programmable thermostat that has no "dial" and the relays would not change state if it has no voltage supplied. Some has internal backup battery that can be tested on ther bench. Has many different functions so it may not immediately switches state if you changed the temperature. (Compressor protection delay, etc.)

So as always open the manual and learn about the unit before troubleshooting. There is often more information available from the manufacturer on-line than in the box.:cool:

Motto: there are very few simple questions.
Click to expand...

The OP stated an electric baseboard heater. :rolleyes:

Sometimes they are just simple questions..........
 
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