Solved in 2024: Lux Thermostat Manuals & Troubleshooting

Around the world, over 18 million homes pick LUX thermostats to keep their temperatures just right. But sometimes, even the best gadgets need a little love and care. If you're having trouble with your thermostat, don't worry. You've landed in the perfect spot. We provide all the help you need for various LUX models. Our guides are filled with handy troubleshooting tips to get your HVAC system back to running smoothly.

Lux Thermostat Manuals

It can sometimes be difficult to find the correct instruction manual for your device, particularly for older, discontinued models.

Use the search bar below to find your specific Lux Thermostat Manual. You can enter the model number, name or description. We’ve also included images to help.

If you have a manual you would like to list, submit it here. Or, if your model is not listed, leave a comment below.

All imagery and manuals are copyright © Lux. Please visit https://www.luxproducts.com/ for the most up to date manuals and product information. You can read our DMCA policy here.

Model Image	Model ID	Description	Document Updated	Downloads
	CAG1500	CAG1500 Series	2005	Installation Manual Document(s) Updated: 2005
	105/2110 Series 43318	Heat Pump Digital Thermostat	2005	Installation Manual Document(s) Updated: 2005
	Dmh100 Series DMH100	Digital Mechanical Thermostat	2004	Instruction Manual Document(s) Updated: 2004
	DMH110b	Non-Programmable Thermostat	2013	Installation Manual Document(s) Updated: 2013
	ELV1, PSPLV510	Programmable Line Voltage Thermostat	2004	Instruction Manual Document(s) Updated: 2004
	LHP-750	Versatile Heat Pump Thermostat	2010	Installation Manual Document(s) Updated: 2010
	Single-Pole, Heating Only LV11	Mechanical Line Voltage Thermostat	2014	Instruction Manual Document(s) Updated: 2014
	LV1, LV2, LV3	Mechanical Line Voltage Thermostats	2006	Instruction Manual Document(s) Updated: 2006
	LV21	Mechanical Line Voltage Thermostat	2014	Instruction Manual Document(s) Updated: 2014
	T10-1141	Heating Only Thermostat	2000	Installation Manual Document(s) Updated: 2000
	T10-1141SA	Heating Only Thermostat	2007	Instruction Manual Document(s) Updated: 2007
	T40-1143	Deluxe Heating & Cooling Thermostat	2001	Installation Manual Document(s) Updated: 2001
	T10-1143SA	Heating & Cooling Thermostat	2007	Instruction Manual Document(s) Updated: 2007
	120-1141	Deluxe Heating Only Thermostat	2001	Installation Manual Document(s) Updated: 2001
	T20-1141SA	Heating Only Thermostat	2006	Instruction Manual Document(s) Updated: 2006
	T40-1143SA	Heating & Cooling Thermostat	2006	Instruction Manual Document(s) Updated: 2006
	T40-1143SA	Heating & Cooling Thermostat	2006	Instruction Manual Document(s) Updated: 2006
	EcoStat® TH10	Heating Only Mercury FREE Manual Thermostat	2009	Instruction Manual Document(s) Updated: 2009
	Ultra 1000 TX1000	Thermostat	2007	Installation Manual Document(s) Updated: 2007
	TX100E	7 Day or 5/2 Day Programmable or Non-Programmable Thermostat	2014	Instruction Manual Document(s) Updated: 2014
	Smart Temp® TX1500b	Electronic Thermostat	2006	Instruction Manual Document(s) Updated: 2006
	TX1500E	Programmable Thermostat	2006	Installation Manual Document(s) Updated: 2006
	Smart Temp® TX1500U	Universal 5/1/1-day Programmable Thermostat	2013	Installation Manual Document(s) Updated: 2013
	Smart Temp® TX1500Ua	Universal 5/1/1-day Programmable Or Non-programmable Thermostat	2013	Installation Manual Document(s) Updated: 2013
	Smart Temp TX1500Uc	Universal 5/1/1-day Programmable Or Non-programmable Thermostat	2014	Instruction Manual Document(s) Updated: 2014
	Tx250 Series TX250	Smart Temp Electronic Thermostat	2004	Instruction Manual Document(s) Updated: 2004
	Smart Temp® TX500b	Electronic Thermostat	2006	Instruction Manual Document(s) Updated: 2006
	TX500E	Programmable Thermostat	2008	Installation Manual Document(s) Updated: 2008
	Smart Temp® TX500U	Universal 5/2-day Programmable Thermostat	2011	Instruction Manual Document(s) Updated: 2011
	Smart Temp TX500Ua	Universal 5/2-day Programmable Or Non-programmable Thermostat	2013	Instruction Manual Document(s) Updated: 2013
	Smart Temp TX500Ub	Universal 5/2-day Programmable Or Non-programmable Thermostat	2014	Instruction Manual Document(s) Updated: 2014
	Smart Temp TX500Uc	Universal 5/2-day Programmable Or Non-programmable Thermostat	2014	Instruction Manual Document(s) Updated: 2014
	TX700U	Universal Thermostat	2015	Installation Manual Document(s) Updated: 2015
	Smart Temp TX9000a	Electronic Thermostat	2006	Instruction Manual Document(s) Updated: 2006
	TX9000a	Electronic Thermostat	2006	Instruction Manual Document(s) Updated: 2006
	Smart Temp TX9000TS	Electronic Thermostat	2008	Instruction Manual Document(s) Updated: 2008
	TX9100Ua	Universal 7-day Programmable Thermostat	2014	Instruction Manual Document(s) Updated: 2014
	TX9100Ub	Universal 7-day Programmable Thermostat	2014	Instruction Manual Document(s) Updated: 2014
	TX9100Uc	Universal 7-day Programmable Thermostat	2014	Instruction Manual Document(s) Updated: 2014
	TX9100U	Universal 7-day Programmable Thermostat	2011	Instruction Manual Document(s) Updated: 2011
	TX9600TS	Universal 7-day Programmable Touchscreen Thermostat	2011	Instruction Manual Document(s) Updated: 2011
	TX9600TSa	Universal 7-day Programmable Touchscreen Thermostat	2013	Installation Manual Document(s) Updated: 2013
	Smart Temp® WIN100	Electronic Thermostat	2018	Installation Manual Document(s) Updated: 2018
	Konoz	Smart Hub Thermostat	2018	Instruction Manual Document(s) Updated: 2018
	Kono	Smart Thermostat	2017	Installation Manual Document(s) Updated: 2017
	KONOzw	Smart Hub Thermostat	2019	Installation Manual Document(s) Updated: 2019
	CS1	Wi-Fi Thermostat	2019	Installation Manual Document(s) Updated: 2019

How to find your Lux Thermostat Model Number?

To find the correct manual for your Lux thermostat, you need to identify the model number of the device. Usually, the thermostat comes with a sticker that contains the serial number – typically on the back of the thermostat. You can usually slide the thermostat off its base to reveal the model and serial number.

Lux Thermostat Troubleshooting

How to carry out a Lux Thermostat filter reset?

Usually, the thermostat will tell you when it needs an air filter change. In some cases, you will see the word “Filter” flashing on the display. The filter is not related to the thermostat itself, but it still needs a change. To change your filter efficiently and effectively, you will need to refer to the guide of the manufacturer of your HVAC system. This will be different for everyone. Even with the filter needing a change, your thermostat will continue to function as usual.

Another thing you can do is turn off the filter reminder on your thermostat. To do that, click on “Air Filter” on the display of the thermostat. After you click on “Next”, you will see the “Filter Limit” words flashing. Keep pressing the “Down” button until you get to 360 days. If you want to turn off the reminder completely, change its setting to “Off”.

How to troubleshoot your Lux thermostat not working?

There may be several reasons why your Lux thermostat isn’t working, so this is not an easy question to answer. There are, however, some common causes that you can investigate. The first and easiest thing you can do is replacing the batteries. Perhaps the batteries in your thermostat are old and at the end of their life.

The next thing you can do is check the circuit breaker. If nothing is wrong with the batteries, your thermostat may not be receiving power at all. If that’s not the case, you can move on to the wiring. Check the wires to make sure there isn’t any damage there..

Another thing you can do is to reset the thermostat. If the issue persists, contact Lux’s customer support or invite an electrician over and ask them to have a closer look at your faulty thermostat.

What to do if the Lux is not cooling?

If your Lux thermostat is not cooling, there might be something wrong with the wiring or the actual thermostat. There are some things you can do to check what’s wrong with it. First, try restarting the thermostat. This is nothing revolutionary, but it works! Find the power button and switch your thermostat off. Then turn it on again using the same power button and see if that did anything.

A restart is the easiest solution. If that didn’t work, it’s time for a reset. A reset is a bit more complex, as it may break all of your programs and routines. To reset your thermostat, click the reset button and hold it for 5-10 seconds.

Another common issue with thermostats that stop cooling is that they are just dirty. Perhaps dust has accumulated in one part of the thermostat, preventing it from working properly. Clean it up!

How to set a Lux thermostat?

Setting the temperature on your Lux thermostat is easy. You can also create programs that will fit your schedule. First, select the mode you want (heat or cool). Then, press “Menu” and “Scroll”. You should be able to set and review your programs. Press “Ok” and program all days of the week, from Monday to Friday.

You will start with the Monday morning period by selecting a start time. Press “Next” and set the temperature for the program. Press “Next” again and continue to the next time period. Keep in mind that your changes won’t save automatically, so make sure to save them!

Each day has 4 periods. Once you’re done with all of them, you can move on to the next day. Once you’re done with all days of the week, exit the review mode and go back to using your thermostat as you usually do.

How to lock & unlock a Lux thermostat?

If you’re afraid of family members tampering with your thermostat settings, you can lock the screen. It will then require a four-digit code to allow access. Here is how to get that set up:

Put the “System Mode” switch into “Heat” or “Cool”. The “Set Slide” switch should show “Run”. Once you’re there, hold the “Next” button for 5 seconds before you see the words “Lock Code” and “Set Code” on the screen. Select your four-digit code using the “Up” and “Down” buttons. Once you’re done, hold “Next” for 5 seconds.

When it comes time to unlock the thermostat, press and hold “Next” for 5 seconds. Enter the code to unlock the thermostat. Change each digit using the “Up” and “Down” buttons. Once you’re done with all the flashing digits, press and hold “Next” for 5 seconds. You will return to your normal thermostat screen with no passcode.

What to do if your thermostat won't change temperature?

If your Lux thermostat is not letting you change the temperature, the easiest thing you can do is perform a hardware reset. This type of reset does not erase your programs. All you have to do is take the front panel off the thermostat and find the reset button. Hold it for 5 seconds and release.

A software reset is a bit more challenging and it will erase all of your data. To do it, you need to place the “System Mode” switch in “Off”, and press and hold the “Up”, “Next”, and “Down” buttons at the same time for 5 seconds.

Finally, your thermostat might just be dirty. Perhaps a speck of dust got into the thermostat and is preventing it from functioning properly. Dust your thermostat with a clean brush and cloth. If nothing works, perhaps it’s time to contact support and request professional help.

Lux Thermostat Manuals: Conclusion

Hopefully, these troubleshooting tips help you keep your Lux thermostat working! If nothing helps, don’t hesitate to refer to your manual and maybe even contact support if you’re still under warranty. 

You can get professional help from the Lux team, as well as your local electrician.

Sources

https://www.luxproducts.com/