What is the L terminal on a Honeywell thermostat?
L: This terminal is designated for indicator lights on the thermostat, sometimes for when auxiliary or emergency heat is turned on, or if there’s a general problem with your system. K: Honeywell wire saver modules combine the Y and G wires to form a single K wire that connects to the K terminal on some Honeywell thermostats.
What are the wires on a thermostat called?
Common thermostat wires: Label Description C Also known as the common wire, the C wir ... R Heating and cooling system power wire. I ... Rh If you don’t have an Rc wire, Rh serves ... Rc If you don’t have an Rh wire, Rc serves ... 6 more rows ...
What do the s and L wires do on an ecobee thermostat?
S terminals are for outdoor temperature sensors. ecobee thermostats obtain weather data over Wi-Fi so S wires aren’t necessary. The L wire can be used to power indicator lights on older thermostats. ecobee thermostats feature an LCD display so the L wire isn’t necessary. Most HVAC systems feature a single fan speed.
Where is the C wire on a smart thermostat?
More often than not, the black or blue wire connected to the C terminal is found in the newer “smart” thermostats. The older thermostats may not have the “C” wire; they function on-demand while the new ones function all the time (continuously 24/7).
What color wire goes to L on thermostat?
Thermostat Wiring Color Code ChartMarkingWire Color CodeDescriptionOOrangeChange-over relay to cool relayBBlueChange-over relay to heat relayAHeat and cool active to any relayLEmergency heat active lamp12 more rows
What is N and L on thermostat?
jbpa October 30, 2018, 2:34am #4. It looks like N is the incoming neutral, and L is the load to the thermostat, with N1 being neutral from the thermostat to the heater, and L1 load from the thermostat to the heater.
What is L1 and L2 in thermostat wiring?
For double-pole thermostats: Using wire connectors, connect a hot supply wire, which is typically black, to thermostat wire one (typically it is marked L1 or Line). Step 8. Connect the remaining supply wire, which is typically white, to the second thermostat wire (typically marked L2 or Line).
What is L on Honeywell?
C – Common. U – Humidifier, Dehumidifier, or Ventilator control. L/A – A – Input for heat pump fault. O/B – Reversing valve for Heat Pump systems. E – Emergency Heat.
What happens if you wire a thermostat wrong?
Potential consequences of improper installation could include: Electric shock. Blowing a circuit breaker. Damaging the thermostat unit, the electrical system or even the AC/furnace unit itself.
What do the colored wires mean on a thermostat?
This is the most typical thermostat wiring style, and it applies to systems that regulate both heat and air conditioning. The wires are typically arranged as follows: red for 24-volt hot, white for heat, yellow for cooling, green for the fan, and blue for common (although the common wire may be a different color).
What does L1 and L2 mean?
L1 and L2 are levels of cache memory in a computer. If the computer processor can find the data it needs for its next operation in cache memory, it will save time compared to having to get it from random access memory. L1 is "level-1" cache memory, usually built onto the microprocessor chip itself.
Is L1 load or supply?
A one way light switch has two terminals which is a common marked as COM or C. The common is for the live wire that supplies the input voltage to the switch. The other terminal is marked as L1 and is the output to the light fixture.
What does L1 and L2 mean HVAC?
They both are, but they alternate back and forth 120 times a second. When L1 is "power in", L2 is "power out", and a 120th of a second later, they swap and L1 is "power out" and L2 is now "power in".
Should RC and RH be connected?
If you have both an Rh (Red-heat for powering the heating) and an Rc (Red-cool for powering the cooling), then the R wire can be connected to either Rh or Rc. If you only have a single R wire, then it will only have an R connector, which is the connection you'll use.
How do you read a thermostat wiring diagram?
2:1810:35Thermostat Wiring Explained! - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo our is red G is green Y is yellow W is white and common is typically blue but sometimes can beMoreSo our is red G is green Y is yellow W is white and common is typically blue but sometimes can be black our 120 volts comes into the furnace transformer.
Where does the orange wire go on a Honeywell thermostat?
The Orange Wire The orange thermostat wire links to your heat pump, if you have one. It terminates in your outdoor condenser for reversing valve operation from hot to cold. The orange wire connects to terminal O on your thermostat.