Honeywell V8043E1012 Wiring Diagram (2024)

FAQs

What color are the wires on a Honeywell motorized valve? ›

Honeywell 28mm zone valve operation (V4043H1106)

Five of these wires are the same as 22mm 2-port valve. Green/yellow is Earth, blue is Neutral, brown is Live (or Line) to the motor, grey and orange are connected to the end switch and form part of a separate circuit.

The yellow wires power the zone valve. Once the thermostat calls and the valve opens it closes an end switch (connected to the red leads) which calls in the aquastat relay.

Thermostat Wiring Tips

If your thermostat controls your heat, you will have a white wire. The Y wire is yellow and connects to your air conditioning compressor. The G wire is green and connects to the fan. Rc and Rh: The red wire(s) are the power source for your thermostat.

Red wires are mostly used to connect the home's power system, and hardwired smoke detectors such that if one alarm goes off, all of them go off. Red wires are used in the installation of ceiling fans, where the light switches may be. Electricians can link a red and black wire or two red wires.

The positive wires in a modern AC setup would have black, red, and blue cable sheaths. The negative wire would have a white cable sheath. If a ground wire is present, it should have a green cable sheath.

Red: Hot Wire

Like black electrical wires, red wires are also hot or live wires. Red can also be the connecting wire between two smoke detectors that are hardwired. Also, if your circuit box is wired for 240 volts instead of 120 volts, you may even see both red and black wires.

The yellow wires on your thermostat connect to your compressor. They control your air conditioning system by turning the compressor on and off. The yellow wires connect your thermostat to your compressor contactor via the air handler.

Yellow wires are almost always used as switch legs for outlets, fans, or lights. White or gray indicates a neutral wire, which provides the return path for the current carried by the hot wires and is grounded within the electrical panel.

White, W wire: This wire signals when it's time to use conventional heating to heat your home. Green, G wire: It operates your HVAC fan. Yellow, Y wire: This wire signals your air conditioner to start the cooling process when needed. Black or Blue, C-wire: It provides continuous power to the smart thermostat.

What color are the wires on a Honeywell valve? ›

The two yellow wires are controlled from the thermostat. The two red wires are the TT/boiler wires. If you have more than one zone valves then there should be multiple pairs of red wires. They all connect in parallel to each other.

​ If you have a mid position valve - the one that makes a T junction, one pipe goes to the hot water cylinder (marked B on the zone valve), and the other to the central heating (A). The pipe marked AB comes from your boiler, so it should be hot.

There are 4 wires: orange (switched live), grey (hot water off), brown & white (heating on) and blue (neutral). I was expecting the orange to become live once the valve had moved to the heating position but that's not the case. It does become live and fire the boiler when hot water is selected.

Green/Yellow, Earth - connected to the metal body of the valve. Blue, Neutral - internally connected to the neutral side of the motor. White, Live in 1 - Activates the motor inside the valve to select either AB (both) or A (heating) Grey, Live in 2 - Used with the White wire to select outlet A only (heating)

There are 4 wires: orange (switched live), grey (hot water off), brown & white (heating on) and blue (neutral). I was expecting the orange to become live once the valve had moved to the heating position but that's not the case. It does become live and fire the boiler when hot water is selected.

If you have two wires, R or RH go into the R terminal and RC into the RC terminal. If you have more than one wire (for example, you have a wire labeled R and another wire labeled Rc), remove any jumpers between the R and Rc terminals or push the switch to open the RC terminal to insert a wire.