Testing a room thermostat?
- Thread starter wazzag
- Start date
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What makes you think it is not functioning properly?
Good approach
The CTR246 thermostat is made by Elco and sold by CEF
Unfortunately there are no details about this stat online.
Do your parents have electric heating by any chance?
What are the connections to the stat? There are usually two (live and switched live) or three (live, switched live and neutral). There may also be an earth connection.
If you have a volt meter, the live will have 240v all the time while the switched live will only show 240v when the thermostat clicks on (turned up high).
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It depends on what you are trying to test?
If you just want to ensure that the contacts close when the dial is turned up and open when the dial is turned down, then you use the resistance range on your meter to check for short circuit (closed) and open circuit (open).
If you want to check that the thermostat is reacting correctly to changes in temperature, then more information would be required about the thermostat. Older thermostats use a bi-metallic strip, which bends as the temperature changes; others use wax, liquid or gas filled bellows. Modern digital thermostats use temperature sensitive solid state devices.
What, exactly, is the problem your parents are having? Someone on this forum may be able to diagnose the fault and save you time.
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