Heat pump thermostat wiring schematic

Brett Martin. October 24, 2023. heat pump thermostat wiring diagram honeywell - What is a Wiring Diagram? A wiring diagram is a straightforward visual representation with the physical connections and physical layout of the electrical system or circuit. It shows what sort of electrical wires are interconnected which enable it to also show ...

I have a Coleman EB17D heat pump with auxiliary and emergency heat. The old Tstat is Coleman Evcon 3600-367A and the wiring is: Blue wire-E. Green wire-G. Orange wire-O. Red wire-R. White wire-W2. Brown wire-L. New Tstat has different designations, Emerson Blue Easy set 1F89EZ-0251 and the terminal designations are: R. C. O/B. W2. Y. G. L This is a brief overview of heat pump thermostat wiring. Always refer to your instructions when wiring up a system to ensure you are wiring to the manufactur... Heat Pump Thermostat Wiring Explained! Colors, Terminals, Functions, Circuit Path! Most Common Thermostat Diagrams. 1 Heat / 1 Cool Thermostat. Furnace and AC. 1 Heat / …Discover the wiring diagram for a Goodman heat pump thermostat. This diagram shows how the thermostat is connected to the air handler and heat pump. ... If you are looking for a better understanding of heat pump thermostat wiring, here is an example of a typical electronic type heat pump control wiring / ... wiring schematic for 83 K10. Need ...The first step to understanding the heat pump schematic diagram is identifying the key components. These typically include the compressor, condenser, evaporator, and expansion valve. These components work together to absorb heat from one location and release it in another, effectively heating or cooling your home. Component.Red wires in heat pump systems are typically used to carry power from the heat pump thermostat to the system. This wire is often referred to as the 'R-wire' and is crucial for controlling the heating and cooling cycles of the heat pump. ... Always refer to the heat pump's wiring diagram to identify the correct wiring setup. This will ...Apr 30, 2023 · Take a picture of the wiring on the old thermostat. Remove the face of the old thermostat. For mercury thermostats you will find 2 covers or compartments. The first which holds the mercy and the second where the actual wiring is. You will need the screwdriver to unscrew the two covers to access the wiring. Remove the old thermostat. Recovered C wire (green wire) For wiring a three-wires thermostat, follow these steps: Removing Control Panel: Eliminate the previous thermostat’s control panel, and capture an image of the three wires. Take note of the …

Room thermostat installation & wiring guide: this article series explains the basics of wiring connections at the thermostat for heating, heat pump, or air conditioning systems. Our page top sketch, courtesy of Honeywell Controls, illustrates the wiring diagram for a traditional Honeywell T87F thermostat used for 2-wire single pole single throw ...helpful reference when wiring your thermostat. Tip: If the color of your wires has faded or if 2 terminals have the same wire color, use the wire labels provided in the package to label ... 7 = Air to Air Heat Pump Radiant Heat: 9 = Hot Water Radiant Heat 12 = Steam Note: This option selects the equipment type your thermostat will ...I took off a bad thermostat the TA2000 on a Carrier heat pump. I purchased another Thermostat 5-1-1 Honeywell RTH2510/RTH2410 Series. Need the wiring diagram for 6 wires. There are 8 places to insert wires. The 1st is B Empty. 2nd says W/2. 3rd O. 4th X. 5th R. 6th Y. 7th G. 8th empty. Need to figure how to place the wires into the Honeywell ...RVs, or recreational vehicles, are a popular choice for those who love to travel and explore the great outdoors. These vehicles provide all the comforts of home while allowing indi...WIRING DIAGRAM. REMOTE HEAT PUMP SINGLE PHASE WITH ECM DEMAND DEFROST CONTROL NON COMMUNICATING TWO STAGE. JHB. 2/10/17 90 - 101229 …Each wire used for low voltage wiring is typically insulated in a different color. The colors of the wires used for heat pump thermostats are as follows: R (power) – Red. Y (compressor) – Yellow. G (fan) – Green. O (reversing valve) – Orange. C (common) – Blue. When wiring a thermostat for a heat pump, it’s essential to connect the ...

Thermostat Wiring For Dummies A Step By Guide Earlyexperts. Thermostat Wire Color Codes And Conventions. How To Test A Heating Cooling Thermostat Learn At Acme Com. Heat Pump Thermostat Wiring Diagram. Furnace Thermostat Wiring And Troubleshooting Hvac How To. How To Tell If Your Home Thermostat Is Bad Sansborn S Ac.Simple nest thermostat wiring diagram - databaseWiring diagram for a nest with heat pump Nest thermostat wiring diagram heat only wire google w1 w2 installation furnace aux learning schematic gen 3rd versus12 wire thermostat wiring diagram. Check Details Wiring thermostat schematics.. Check Details Check DetailsConfigure thermostat for 2 heat / 1 cool heat pump in the Installer Setup. Wire specifications Use 18- to 22-gauge thermostat wire. Shielded cable is not required. Keep wires in this ... FocusPRO™ TH5220D Non-programmable Digital Thermostat 9 Wiring diagrams Typical 2H/2C system (1 transformer) Typical 2H/1C heat pump systemFor example, if the air entering the Heat Pump is 80° (degrees F) - (return air), the supply air (discharge air) into the vehicle will be 60° to 65° (degrees F). As long as this temperature difference (15 to 20 degrees) is being maintained by the Heat Pump, the Heat Pump is operating properly. Again, give careful consideration to the vehicle ...

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Starting on the upper right side of the diagram above: RC – Red: This wire provides 24 volt power from the furnace to the thermostat so that the thermostat can control air conditioning. R – Red: This wire serves the same purpose as the RC wire but for heating. Y – Yellow: Cooling Mode. This wire runs to the furnace control board which in …Tempstar Heat Pump Wiring Schematic. 1087562 icp heil tempstar heat pump defrost control board 10 kw strip for comfortmaker air handlers eb p x v wa fe fs fv fx wkf1002 hvac age manuals parts lists wiring diagrams pdf s contact info condensing boilers jackson dalton dishwasher 208 230 service manual manualzz furnace drain hose 1014359 fast ...The return wire is usually red and labelled R, VR-R, or V-VR. This connects to the R terminal on your Rheem and Ruud thermostat. The stage one heating and cooling wire is typically yellow and labelled Y, Y1, or M. This connects to the Y terminal. The reversing valve wire for cooling is typically orange (but is occasionally blue) and labelled O ...The thermostat uses one wire to control the primary functions of your HVAC system, such as heating, cooling, and fan. See the diagram below for the role of each …

Jun 9, 2023 · When connecting wires from the new heat pump thermostat to the HVAC system, best practice is to use a wire with an 18-8 AWG gauge for most applications (specialty systems may require different sizes). Match each colored wire accordingly: Blue wire connects to B terminal. Red wire connects to R terminal. The following is a Trane heat pump wiring diagram schematic: The diagram shows that the heat pump is connected to the following components: * A power source (120/240 volts) * A thermostat * A reversing valve * A compressor * A condenser coil * An evaporator coil * A fan motor The thermostat controls the operation of the heat pump.Nov 19, 2021 ... In this video I try to explain how to identify and wire a "heat pump" system. This type of system should still be fairly common and easy to ...What uses 8 wire thermostat wiring? These are almost always heat pump HVAC systems Aux heat. How to wire an 8 wire thermostat: 1). Attach the Red wire to the R terminal for 24V Power. 2). Attach the White wire to the W (or W1) terminal for the heat pump’s Heating mode. 3). Attach the Yellow wire to the Y terminal for AC/cooling mode. 4).Wiring Wiring guide — heat pump systems Wiring Instructions 1. This thermostat requires a 24Vac common to power the thermostat. The K terminal is available for Wiresaver module (THPA). 2. Straighten the wire. Using a pen tip to hold down the terminal, gently slide the wire into terminal hole. Note: Terminal hole will only accept one wire.Wiring Diagrams Wiring Diagrams Tech Settings Wiring Tips C Terminal The C (common wire) terminal does not have to be connected when the thermostat is powered by batteries. Wire Specifications Use shielded or non-shielded 18-22 gauge thermostat wire. Installation Tip: Do not overtighten terminal block screws, as this can damage the terminal block.Aug 9, 2013 ... how to wire a low-voltage for Rheem, Rudd showing the thermostat how each wire works then going to air handler explaining heat is white, ...There are a few systems that can use the 6 (or more) wire thermostat wiring, these include. 2nd Stage Heat Pump; Heat pumps with Aux heat; ... As I mentioned earlier, a 6-wire thermostat wiring can include a heat pump with auxiliary heat as shown in the chart below. Be sure to wire the W/ W2 terminal into the W2. Wire: …As Heat Pump Thermostat Wiring Doityourself Com Community Forums. 59695230 3 0 Kw Interline Eco Heat Pump Instruction Manual Manuals. ... Bryant 284anv Evolution Extreme 24 Variable Sd Heat Pump Wiring Diagram Manualzz. Resideo T6 Pro Smart Wiring Diagrams User Guide Manuals.A heat pump wiring diagram is a visual representation of the electrical connections and components used in a heat pump system. It provides a detailed illustration of how the thermostat, air handler, condenser, and other parts of the system are connected and interact with each other.R-410A HEAT PUMP OUTDOOR UNITS 92-105074-04-02 (3/15) Printed in USA [ ] indicates metric conversions. Do not destroy this manual. Please read carefully and ... Typical Thermostat Wiring Diagrams 27

These diagrams outline the electrical connections and components involved in the operation of the heat pump, making it easier for technicians and homeowners to understand and work with the system. Rheem’s wiring diagrams for heat pumps cover a wide range of models and configurations, including single-stage, two-stage, and variable-speed systems.

What To Know About Thermostat Wire Color Codes Syston Cable System Is On. Digitalthermostatconversion Jdbeastlet. 903992 4 5 Wire Thermostat Mobile Home Repair. The Battle For Home And My Own Nest Hacking Skirmish Wiring Diagram 5 Wire Hd Png Kindpng. Thermostat Wiring Diagram With Air Conditioner Fan Heat Pump Etechnog.Heat Pump Thermostat Connection Variants. There are a few things to keep an eye out for before wiring since improper wiring might result in severe disasters. To avoid this, take into account the following factors: Heat Pump Wire Labels – A C-wire is required for most contemporary thermostats to function. The control transformer and R cable ...Before we delve into the wiring diagram, let's first understand the basics of a heat pump thermostat. A heat pump thermostat is a device used to control the temperature and operation of a heat pump system. It allows you to set the desired temperature and switch between heating and cooling modes.The thermostat can control the operation of the entire heat pump system with an optional auxiliary heating strip. The thermostat manufacturer's algorithm displays the best timing and intervals for the heat pump, the heating level your model can reach, the heating strip, and indoor fan speed. The control parameters of the system can be found ...Components of a heat pump thermostat. A heat pump thermostat is a crucial component of a heating and cooling system. It controls the operation of the heat pump by regulating the temperature and cycling the system on and off as needed. Understanding the various components of a heat pump thermostat is important for proper installation and ...The first step to understanding the heat pump schematic diagram is identifying the key components. These typically include the compressor, condenser, evaporator, and expansion valve. These components work together to absorb heat from one location and release it in another, effectively heating or cooling your home. Component.VisionPROTM TH8000 Series 11 69-2389—03. ENGLISH. 1 Cooling system0 Compressor and fan turn off 1 Compressor and fan turn on 2 Second stage compressor turns on. 2 Fan system0 Fan turns off 1 Fan turns on. 3 Heating system0 Heat and fan turn off 1 Heat turns on (fan on if Function 0170 is set for heat pump, or if Function 0180 is set to "1 ...Jan 4, 2023 ... Getting everything to play nice isn't going to be easy. Your old zoning board was designed to use a mechanical heat pump thermostat for Zone ...Name: goodman furnace thermostat wiring diagram - Goodman heat pump troubleshooting manual choice image free goodman heat pump troubleshooting choice image free goodman Elegant Heat Pump thermostat Wiring; File Type: JPG; Source: mainetreasurechest.com; Size: 1.40 MB; Dimension: 5000 x 3704

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Route the 24-volt control wiring (NEC Class 2) from the outdoor unit, to the indoor unit, and to the thermostat in the steps below. Trace the communicating harness from the (B-, R, C, A+) block where it ends in a 4 pin Molex connector, inside the low voltage box. Clip the 4 pin Molex connector and discard.The black wire is attached to the C terminal. For this reason, it is also called the common wire. This terminal completes the 24-volt circuit necessary to power most hard-wired digital thermostats. The dark blue wire is attached to the Ruuds' B terminal for systems utilizing a heat pump. This powers a reversing valve when it is in heat mode.Carrier heat pump wiring diagram1985 carrier heat pump wiring diagram Heat pump carrier wiring diagram system outside air thermostat conditioner unit diagrams hvac weeks ago two fanPump wiring geothermal coil exchanger thermostat refrigerant.Heat pump thermostat wiring settings vine smarthome goodman gsz140421 3 5 ton 14 to 15 seer r 410a refrigerant vs ac inspecting hvac systems internachi forum rv net open roads trigger reversing valve with new stat 97 duotherm heatpump midea question diy home improvement ford escape diagram ricks free auto repair advice …Components of a heat pump thermostat. A heat pump thermostat is a crucial component of a heating and cooling system. It controls the operation of the heat pump by regulating the temperature and cycling the system on and off as needed. Understanding the various components of a heat pump thermostat is important for proper installation and ...However, each wire has a specific function when it comes to low-voltage wiring. Here are the functions we typically use on a thermostat for a heat pump (colors are in parentheses): RH: constant 24v power for heating mode (red) C: common (blue) Y1: contactor (yellow) G: blower (green)It is important to use the appropriate wire connectors for the specific gauge of wire being used to ensure a secure and reliable connection. 7. Allen wrenches: Allen wrenches are necessary for tightening or loosening bolts in the heat pump. These wrenches are typically included in the heat pump’s installation kit. 8.Evcon Thermostat Wiring Diagram. January 2, 2023 by Ana Oshi. Coleman eb23c installation manual pdf manualslib as heat pump thermostat wiring doityourself com community forums our eb20b electric furnace isn t working the fan works full time with set to but no untitled air handler wont shut off under repository circuits 39052 next gr how wire … ….

This low voltage thermostat is designed to provide conve- nient control of the heating/cooling system. To provide greater room comfort, the sensitive spiral bimetal is com- bined with an adjustable heating anticipator and a fixed cooling anticipator to provide maximum comfort. 1F56 Series. Low Voltage Heating/Cooling Thermostats.The thermostat wiring diagram typically includes color-coded wires that indicate their function. For example, the red wire is often used for power and the white wire for heat. ... furnace, and heat pump. Proper wiring is crucial for the system to function correctly and efficiently. One of the key components in an HVAC system is the thermostat ...As shown in the diagram, you will need to power up the thermostat, and the 24V AC power is connected to the R and C terminals. The color of wire R is usually RED and C is BLACK. C is known as the common terminal. These two connections will ensure that there is power to the thermostat that you are operating.When thermostat is in lockout, ELEC will flash on the display. In gas heat mode, the gas furnace will provide the only source of heat and the heat pump is locked out. Refer to …Simple nest thermostat wiring diagram - databaseWiring diagram for a nest with heat pump Nest thermostat wiring diagram heat only wire google w1 w2 installation furnace aux learning schematic gen 3rd versus12 wire thermostat wiring diagram. Check Details Wiring thermostat schematics.. Check Details Check DetailsThis thermostat also appears as the Emerson 70-series room thermostat and in a similar model, the Emerson 80-series thermostat. White Rodgers 2-Wire Heat Only Thermostat wiring diagram. 2-Wire Heat-Only White Rodgers thermostat wiring detail for a White Rodgers 1F90 Low Voltage Digital Comfort-Set thermostat5 Wiring Diagram - 6535 (-) Series; Download this manual; SERVICE MANUAL. FOR. ... Page 8 6535-3351 Heat Pump Thermostat Example To Bring On Gas Furnace as 2 Stage Heat Setpoint Indoor Temp. Operation No functions occur Heat Pump turns on (Primary heat source) Heat Pump turns off (Thermostat satisfied) Heat Pump turns on Gas Furnace turns on ...Thermostat rheemThermostat nest wiring diagram simple squarespace database wire heat source Wiring thermostat lifeofmanThermostat wiring nest diagram pump cooler heat swamp motor speed emergency honeywell luxpro 110v 2wire library using control cooling connect.Thermostats are really nothing more than temperature controlled switches. When the need for Cooling or Heating exists the thermostat sends a 12VDC(+) signal to the control relays or a P.C. board which in turn energizes the air conditioner components or the furnace. Heat pump thermostat wiring schematic, If so, see inside front cover of this manual for proper disposal instructions. 69-1891ES-1-RTH3100C-IG.CS5.indd 5 5/17/2011 11:21:06 AM. Installation Guide 6. Do not use unconnectedwires. If any wires are not attached to terminals in your old thermostat, do not connect them to your new thermostat. Wrap the bare metal ends of each unused wire ..., Coleman RV analog thermostat with heat/cool control has 6 wires with standard color codes. They are red, white, grey, green, yellow, and blue for +12V, furnace control, low fan speed, high fan speed, AC compressor, and -12V or ground, respectively. The thermostat with the cool-only option has 5 wires with the same color codes except for the missing white wire for heat control. The digital ..., Page 5: Wiring Diagrams American Standard 203 Programmable Thermostat Wiring Diagrams 1 or 2 Stage Heat Pump with TAM7/TAM9 (24V Mode) Thermostat Indoor Unit Outdoor Unit Y/Y1 NOTES: 1) Wire third party condensate over ow switches between Y of the thermostat and Y1 of the air ow control board... Page 6: Stage Cooling With Gaf2-S, Lennox heat pump thermostat wiring diagram. Wiring thermostat honeywell goodman terminals ecobee voltage trane exatin statically schemasThermostat wiring diagram furnace heating electric basic electrical stage explained cooling two heat pump hvac air system wire fan control Wiring a heat pump diagramWiring thermostat diagram pump heat trane ..., Heat Pump System. Heat Pump Air Conditioner. Remote Sensors. Electric Heat Pump. Hvac Heat Pump. Central Air Conditioners. Hvac Thermostat. khushi Mohammed. 43 followers., To achieve this simple. Put together the the Y, G and R H wire. If the compressor kicks on outside, then the problem is probably not with the system but the thermostat. IAnd if the system doesn't turn on heat, the problem is not with the thermostat. Read also: 6 wire thermostat wiring diagram., T3 series thermostat i need help with the wiring for a honeywell t5 and rheem heat pump that s what have questions about am 5 2 day programmable 2h 2c multistage heating cooling hvac rth9580wf question diy home improvement forum installation doityourself com community forums pro th3110u2008 non 1h 1c room or resideo connection tables hook up ..., network. The thermostat and subbase are available in the following models: Part Number Product Description Q7300H2003 Communicating subbase with O and B terminals for three-stage heat, two-stage cool heat pump system. Q7300H2011 Communicating subbase without O and B terminals for three-stage heat, two-stage cool heat pump system., Using the wiring diagram, identify the different wires coming from your heat pump and thermostat. These wires will typically include ones for the thermostat power, fan control, heat pump control, and heat/cool stage control. 4. Strip and Connect Wires. Using the wire strippers, strip about 1/4 inch of insulation off the end of each wire., Wire stripper. Electrical tape. Ruud heat pump thermostat. 2. Turn off power to your heat pump system. Locate the circuit breaker or disconnect switch for your heat pump system and turn it off. This will ensure that you can work on the thermostat wiring safely. 3. Remove the old thermostat., Sep 19, 2021 · Remove any wire covers and electrical tape from the wires that link the thermostat to the domestic wiring by untangling the cables from one another. Remove any faceplates that may be present by unscrewing the screws that hold the plate to the wall. Mount the new 2-stage thermostat’s plate. , 6. Compare the wiring at your control board with the wiring at your thermostat. Open the image of your thermostat wiring on your phone. Using the color of the wires as a guide, compare the wiring on your thermostat to the wiring on your system control board. Look for the wire connectors unknown wires attach to., This 5 wire thermostat wiring diagram shows the most common wiring color code and which thermostat terminal each wire attaches to. This color code is for most systems with a furnace and central air conditioner. ... Heat pump 5 wire thermostat color code: A heat pump and air handler system uses the following thermostat terminals and colors. Most ..., This HVAC Video is about Heat Pump Thermostats- the wiring color code, terminal functions, and exactly what happens inside the thermostat as well as what the..., Wiring Chart for Basic Thermostat Wiring Terminals and Designations. 4 Wire or 5 Wire Thermostat Wiring Problem. Wire Color or Designation. Control Point/Function in Equipment. W-wire - white wire. this wire goes to the gas controls to engage the heat on a call for heat from the thermostat when you have it set to heating mode., 1 or 2 Stage Heat Pump with TAM7 5 1 Stage Cooling with TAM7 5 ... wiring diagram. 7. Push excess wire into wall and plug hole with a fire resistant material (such as fiberglass insulation) to prevent drafts ... Trane XR203 Programmable Thermostat 4.5 Wiring Diagrams NOTES: 1) Wire third party condensate over˜ow, Universal Programmable Smart Wi-Fi Thermostat 1 Specifications 2 Installation and Wiring 3 Quick Reference 4 Installer Settings 5 System Testing • Possible electric shock or damage to equipment can occur. ... - Multistage Heat Pump NOTE: If a common "C" wire is not being used, the 2 "AA" batteries must be installed., L Heat pump fault input S Outdoor sensor S Outdoor sensor W Do not use this terminal for heat pump applications! Wiring heat pump systems Shaded areas below apply only to TH6320U/TH6220U or as otherwise noted. NOTES Wire specifications: Use 18- to 22-gauge thermostat wire. Shielded cable is not required. [1] Power supply. Provide disconnect ..., Generally speaking, thermostats work by using a mercury switch that is in contact with a thermometer wire to trigger a temperature-adjustment lever in response to the expansion or ..., Step 4 - Connect the wires. Use a wire stripper and strip 3/4 inch of the outer insulation from all four wires of the transformer. You must be able to see the bare copper wire under the insulation. Locate the two 120 VAC power supply wires. One supply wire will be black., Some thermostats have wire connectors with two sets of labels: one for conventional systems, one for systems with a heat pump. · If you put wires into the wrong ..., present at the heat pump/defrost control. The heat pump/defrost control will attempt to start unit after the anti-short cycle time expires, when a high or low pressure control automatically resets, or when the heat pump/defrost control exits the lockout mode as the temperature rises above 5°F., Heat Circuit Heat Pump Terminal Interface R3-1 R2-1 R1-1 R4-1 VDC Switching Application for Heat Pumps R3 R2 R1 Note: Use 24 VAC interface relays R1-1, R2-1, R3-1, and R4-1 (provided by the user). Y2 Y1 G RC O/B T E C 2 1 0 1-2 _ W i r i n g Figure 5: TEC2102-2 Thermostat Wiring Schematic, Thanks for providing the additional photos. The photos and the wiring diagram confirm that the light blue wiring is your common on the 24V side. To attach your thermostat C wire, you can attach directly to the 'C' terminal on your control board (there are two - one is open in the photo)., Unused wire: Identify if the wire is also unused at the control panel. If it is not being used, label that unused wire with an empty sticker label. If the wire is being used, label it at the thermostat. Two wires in one terminal: You may have a dual transformer system. Incompatible wires: Stranded wires are not compatible. Label and disconnect ..., Set jumper JP2, on the back of the thermostat, if you have a heat pump. Incorrect jumper setting: The heat pump operation will be reversed, i.e., it will cool in Heat mode and will heat in Cool mode. Set Heat Pump Reversing Valve 7. O Leave the jumper in this factory-set position if you have connected O wire to the O/B terminal., 1. Understanding the Basics of Heat Pump Thermostat Wiring. Voltage Compatibility. Check the voltage requirements of your heat pump and thermostat. …, Dometic thermostat wiring diagrams Dometic Thermostat instructions. ... Meenan provides heating, heat pump, and air conditioning repair services in Maryland, Washington D.C., and northern Virginia. He can be contacted at 301-591-1646 or by Email to Malware Deleted 12/9/2014 - 10/2010. Quoting:, 2 wire thermostat wiring diagramThermostat wiring diagram honeywell heat pump emergency aux colors wire terminals furnace thermostats indoor em cooling functions auxiliary programmable digital Heat pump: heat pump thermostat wiring diagramI have a heat pump system that isn't working. after i call for heat at., Single Stage, Multi-Stage, Heat Pump Heat Pump Connections If you do not have a heat pump system, refer to fi gures 2 & 3. Refer to equipment manufacturers’ instructions for specifi c system wiring information. You can confi gure the thermostat for use with the following heat pump systems. Figure 1 – Heat Pump Systems HEAT PUMP TYPE 1 ..., 25HBC5. Comfort™ 15 Heat Pump with Puronr Refrigerant. 1---1/2 to 5 Nominal Tons. Fig. 1 – Wiring Diagram — 25HBC518--60, 208/230--1 ..., A heat pump wiring diagram is a visual representation of how the electrical components of a heat pump system are connected. It shows the connections between the thermostat, …, Pairing the Thermostat Wiring Diagrams Green Gray Wht/Blk 2 3 1 4 Fan Hi Heat Pump Fan Lo M Plug Housing Amp P/N: 1-480702-0 Pin Terminal x2 Amp P/N: 350218-1 F ... 71 Gas heat and heat pump turn off, thermostat is satisfied. 69 Heat pump turns on. 65 Gas heat turns on at 5 degrees below first stage (heat pump cannot satisfy