How to Change a Thermostat
|
Thermostat Problems and How to Fix Them: Wiring a Heating and Air Conditioning Thermostat. |
Replacing a Thermostat
Electrical Question: I have two thermostats, one downstairs in the hallway and the other one is upstairs in my bedroom. I wanted to replace them with a digital thermostat. I was able to change the downstairs thermostat, but when I tried to do the upstairs I had no success.
- Installing a Digital Thermostat
I bought two digital thermostat at Lowe’s, not knowing that the thermostat upstairs required a thermostat that has some kind of pump. Well I did the one downstairs first, got it hooked up & it worked, went up stairs took the White-Rodgers old thermostat off & put in the Honeywell, I got done wires crossed, so I called Honeywell, that’s when she told me I had the wrong thermostat for upstairs. I needed a special one that’s for a pump. - Exchanging the Thermostat
I take that one back, get the one she told me to get, hooked it up, didn’t work, I got so frustrated, I just took it back & got a refund. I tried to put the White-Rodgers back on, and it didn’t work either. Hmm. - The Power Supply
It was working fine before I took it off the first time. I really feel like I blew something inside the house. No smoke or burnt smell taken place. How do I go about finding if I blew a fuse or a circuit breaker? - Problem with Two Thermostats
the I would like to check that first before I call a air & heating person. I really would like to go digital. One is fixed and the other is broken. I have not run the downstairs because I don’t want to put stress or wear and tear on it by trying to cool the the whole house.
What do you think I did wrong?
Jason
This electrical question came from: Jason, from Atlanta, Georgia.
Dave’s Reply:
Thanks for your electrical wiring question Jason.
Wiring a Heating and Air Conditioning Thermostat
Application: Replacing and Installing a Thermostat.
Skill Level: Beginner to Intermediate. This electrical wiring project is best performed by a Licensed Electrical Contractor or Certified Electrician.
Tools Required: Basic Electricians Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on personal level experience and ability to work with tools.
Precaution: Identify the circuit for the furnace or heat pump, turn it OFF and Tag it with a Note before working with the thermostat wiring.
Troubleshooting and Testing: Most thermostats may be tested using a Volt/Ohm Meter. The thermostat battery should be tested and replaced as needed.
Notice: Make sure to get the exact replacement thermostat.
Guidelines for Replacing a Wall Thermostat
Replacing a Thermostat can be tricky, but it is possible when you follow these Guidelines
- All thermostats are not alike, some work with Low Voltage, and some with Line Voltage or the circuit voltage.
- If the wiring is not small similar to door bell wire or telephone wire the the thermostat may be Line Voltage.
- When replacing any thermostat the circuit for the equipment must be identified and turned OFF.
- Make a drawing of the wiring connections BEFORE removing any wires, or take a photo or two with a digital camera.
- Make sure to get the right replacement or one that is compatible.
- Purchase a good quality brand thermostat which has a toll free support phone number or website which will assist you if you have problems. Take your time be patient and don’t break any wires.
Common Thermostat Problems and How to Fix Them
- The Thermostat Battery is Dead and Needs Replacing
- Not all thermostats have a battery, but most digital or programmable thermostats do have a AA Battery in the wall mounted thermostat.
- Problems with a Energy Saving Programmable Thermostat
- When a home has been equipped with energy saving devices often a programmable thermostat is installed and the programming may be very difficult to understand and the digital display may be difficult to read or understand.
- Default Program Settings
- Most energy savings thermostats work very well and have a default program and only a few settings are required which are best programmed by the installing service technician.
- If a programmable thermostat is too difficult to understand or is not performing then a non-programmable standard thermostat may be a better solution, such as a Honeywell or White Rogers thermostat.
- Make sure the heater or air conditioner has power to the unit
- The circuit power to the heater, heat pump or air conditioner must be available and working properly otherwise the heating and air conditioning system will not work even if a new thermostat is installed. A HVAC, Heating Ventilation and Air Conditioning technician should be called to check the HVAC system and the circuit power and components.
More about Wiring a Thermostat
How to Install a Programmable Thermostat for Room Heating Unit
Electrical Circuit for Caret Baseboard Heaters: When we tried to convert from ceiling heat to a cadet baseboard heater we found three bedrooms were all on the same circuit.
Wiring Instructions for a Honeywell Thermostat: I bought a Honeywell Heating thermostat. There were no directions about how to wire it.
How to Install Electrical Wiring for a 240 Volt Wall Heater
Related Questions about wiring a thermostat
|
||||||||
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.
The Safest Way to Test Electrical Devices and Identify Electric Wires!The Non-Contact Electrical TesterThis is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.
The Quickest Way to Check for Faulty Electrical Wiring!The Plug-In Outlet TesterThis is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring. It detects probable improper wiring conditions in standard 110-125 VAC outlets Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency Lights indicate if wiring is correct and indicator light chart is included Tests standard 3-wire outlets UL Listed Light indicates if wiring is incorrect Very handy and easy to use.
Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!The Wire Stripper and Wire CutterMy absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires. This handy tool has multiple uses: The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation. The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets.. The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use. |
||
| More articles about Electrical Wiring, Programmable Thermostats and Home Electrical Wiring: | |
| « Previous | Next » |
| Planning Pump House and Well Circuit | How to Stop Fluorescent Lights from Flickering |
FAQs Frequently Asked Questions and Comments
2 Responses to “How to Change a Thermostat”You must be logged in to post a comment.
I bought a cadet 6 foot baseboard heater and they sent me a 4 pole thermostat and I only need a 2 pole, how can I make the 4 pole one work? or can I?
Thanks, Jer
Hi Jer,
The thermostat that you are describing is typically used to control the 240 volt circuit, consisting of the Line and Load circuit wiring. Please refer to the wiring diagram which is included with the thermostat of the baseboard heater.
I hope this helps,
Dave