Three3 said:It is important to follow the directions regarding setting the thermostat's normal mode temp to the max. Otherwise there could be a continuing duel between it and the stove's own setting that leads to an unstable situation.
Is there a difference between a Trim Pot and a Potentiometer? I installed a 50k- Ohm Potentiometer today and it gave me a 4 flash error on the Harman when it went to cool down mode. I even took the programmable thermostat and hooked up the Pot. up directly in parallel with the thermister and still got the 4 flash error code.
Yes there is. The temperature sensor is a varistor and it varies with the temperature in the room. This give the control board something to compare against its internal electronics and that determines whether the heat turns on or off. A thermostat is nothing more than a temperature controlled switch that either makes or breaks depending on the temperature it's set at. By putting it in series you're basically switching the varistor, when turned off, into an open situation and that triggers the error condition that shuts down the stove. When the thermostat calls for heat it makes the connection and the error goes away and the stove starts up. Very simple and it works very nicely. I've been doing it for 2 years. It works equally well in either room temp automatic or manual modes.
Ron
So if I us battery power and contacts R &W the stove sensor will control the stove and tstat can start & stop, tstat is just a timer. Do mil-volts come in to play?Yes there is. The temperature sensor is a varistor and it varies with the temperature in the room. This give the control board something to compare against its internal electronics and that determines whether the heat turns on or off. A thermostat is nothing more than a temperature controlled switch that either makes or breaks depending on the temperature it's set at. By putting it in series you're basically switching the varistor, when turned off, into an open situation and that triggers the error condition that shuts down the stove. When the thermostat calls for heat it makes the connection and the error goes away and the stove starts up. Very simple and it works very nicely. I've been doing it for 2 years. It works equally well in either room temp automatic or manual modes.
Ron
We use essential cookies to make this site work, and optional cookies to enhance your experience.