Can this unit control a variable speed blower?
1855220
This is the best thermostat I have ever used and it does work with the 2-speed fan in our unit, but the AC unit determines which speed to use depending on cooling, heating, or just circulating air.
1855221
I used mine to interface to a zone controller so that would not be available as an option. I did not see any options on the programming of the stat. to control speed any way. My best guess from not seeing that option is that the thermostat would not control the speed but cant say for sure, I am not sure if your air handler has any sensors in it to detect if it needs to change fan speeds without a signal to do so from the thermostat, you could check on what actually controls the speed of the fan your equipment. This thermostat has tons of programming options and is the very best I have ever had or seen, but again I did not see programming options for speed control. I used mine to interface to a zone controller so that would not be available as an option. I did not see any options on the programming of the stat. to control speed any way. My best guess from not seeing that option is that the thermostat would not control the speed but cant say for sure, I am not sure if your air handler has any sensors in it to detect if it needs to change fan speeds without a signal to do so from the thermostat, you could check on what actually controls the speed of the fan your equipment. This thermostat has tons of programming options and is the very best I have ever... » Read More I used mine to interface to a zone controller so that would not be available as an option. I did not see any options on the programming of the stat. to control speed any way. My best guess from not seeing that option is that the thermostat would not control the speed but cant say for sure, I am not sure if your air handler has any sensors in it to detect if it needs to change fan speeds without a signal to do so from the thermostat, you could check on what actually controls the speed of the fan your equipment. This thermostat has tons of programming options and is the very best I have ever had or seen, but again I did not see programming options for speed control. « Show Less
1855222
I used mine to interface to a zone controller so that would not be available as an option. I did not see any options on the programming of the stat. to control speed any way. My best guess from not seeing that option is that the thermostat would not control the speed but cant say for sure, I am not sure if your air handler has any sensors in it to detect if it needs to change fan speeds without a signal to do so from the thermostat, you could check on what actually controls the speed of the fan your equipment. This thermostat has tons of programming options and is the very best I have ever had or seen, but again I did not see programming options for speed control.
1855223
Yes, it can. We just upgraded our A/C to a two-stage blower and compressor, and used this same thermostat. However, an additional wire will need to be run from the blower to the thermostat.
1855224
It will work with a unit with a variable speed blower, but the thermostat itself does not control or is capable of changing the blower speeds. A computer or circuit card in the unit itself controls the blower speed, not the thermostat itself.
149446
Yes. The blower has a variable speed option if your gravel is very small. But even if it didn't I don't suspect it to be a problem. I have a gravel pit and haven't had any problems as of yet. Hope this was helpful.
595886
The unit requires power for the automatic controls to make decisions and to run the variable-speed fan.
1967227
NO! The variable speed control is not good and I returned this driver Home Depot.
1428078
Yes. I hooked it up to an Arduino that controls the voltage to the motor (using a transistor) to vary its speed.
1983572
Yes, it is variable. You should buy a PMW controler to vary the speed. But be careful if you need to reverse the motor with a polarity reversing toggle switch. Put the motor leads on the toggle switch, not the power leads.
520846
Can use this one to reduce the speed of a 12 volt 5 amp blower, to 6 or less? thanks
2221530
YES, the unit will control 12V fans, no modification is necessary. These controls are used in the HVAC industry and many other 12V applications. I use them to control dual 12V cooling fans to cool transmitter heat sinks and power supplies.
866299
If the control panel matches the same model you have, then yes it will work. But you might want to check the blower motor resistor first before you replace the control unit. The blower motor resistor will most likely be the cause if your problem. They are more likely to go out than the control unit itself.
2007149
Perhaps it can be done, but the motors are really not equipped for variable speed control. A really good motor-man or electrician might be able to figure it out. But you might also end up burning up the motor.
412979
The switch on this blower could be bought where electrical swtiches are sold, make sure you check the watts/voltage on blower to purchase correct switch. Good Luck.
424197
No, Yes I use mine with a scroll saw to start and stop the saw. Any variable speed control would have to be part of the saw itself.
2112183
Yes you can control an AC unit. Basically what this unit does is turn your AC on and off based on your temperature setting.
1983570
Yes, it can do variable speed. It's a brushed DC motor, so varying the current will vary the speed, & reversing the polarity will reverse the direction of rotation. One can use a traditional analog current controller, or a PWM current controller, which will be more efficient. - bc for AnaV
1305800
I Don't think using a speed control will cause a problem. Larger AC motors do get hot from under-voltage and lower than normal rotation speed, however, this small fractional motor runs well at all speeds. Bottom line: run the blower at your desired reduced speed and check the motor temperature with your hand. If it is not too hot to touch and hold then all is fine.
808322
No, It's a 12 volt blower and only has two wires about 10 inches long for connection. It does move a lot of ait though.
710025
My husband bought this fan to use on our 4-wheeler to keep it cool while he was using it in the woods. However, he didn't put it on a switch so he doesn't know if it has variable speeds. He is very happy with the fan as it worked for his intended purpose. Sorry we couldn't be of more help.