Honeywell V8043E1012 Wiring Diagram (2024)

FAQs

What color are the wires on a Honeywell zone 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.

3 Port Valve Operation

Electrically, the valve has 5 wires: 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)

The redd leads go to the boiler control/relay thermostat terminals. 1 yellow lead goes to the transformer common the other to thermostat W. Thermostat R goes to the transformer hot.

It connects your thermostat to your air handler or furnace. The white wire connects to terminal W in most industry-standard thermostats. If your HVAC system has multiple heating stages, then you may find more than one white wire.

Attach the red wire to the R terminal (Call for heating and/or cooling). Attach the green wire to the G terminal (Fan). Attach the white wire to the W terminal (Heat). Attach the yellow wire to the Y terminal (AC).

Here is the industry standard color code for thermostat wires used for most systems: The W wire is connected to your heating system. 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.

US AC power circuit wiring color codes

The protective ground is green or green with yellow stripe. The neutral is white, the hot (live or active) single phase wires are black , and red in the case of a second active. Three-phase lines are red, black, and blue.

Red: Hot Wire

You will usually only see a red wire when an outlet is a 240-volt outlet or when a wall switch controls the outlet. In this case, when the switch is "on," the red wire will supply power to the outlet instead of the black wire. Like black electrical wires, red wires are also hot or live wires.

3 Port Valve Operation

Electrically, the valve has 5 wires: 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)

DC power is common in devices that run from batteries. If you encounter wiring from a DC device, such as in solar cells or batteries, don't forget that the colors of the wire sheaths differ from AC wiring. Red: The red wire is positive.

What is the A and B on a Motorised valve? ›

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.

If the system can easily meet your hot water demand (or no demand exists), 230 volts of electricity will travel along the grey wire, to turn off the hot water. Once this happens, the grey wire powers the motor (again with 230 volts) once switch one has moved position.

5/2-way letters (B): Supply air port (P), outlet ports (A, B), and exhaust ports (EA, EB). 4/2-way numbers (C): Supply air port (1), outlet ports (2, 4), and exhaust port (3).

The brown is a switched live to the motor and the grey is a permanent live to the micro-switch which then energises the orange wire to the boiler - which must only operate once the valve has been opened.

The C, or common wire, provides smart thermostats with continual power. It's usually blue, but it may also be black, brown or purple.

The extra white wire is another type of live: it acts as a signal or switch input for either the heating or hot water circuit, moves the motor round and turns the boiler or pump on. It's a little extra system safeguard so the boiler of pump don't run unnecessarily when there's nowhere for the water to flow to.