Question about Heating & Cooling

1 Answer

Should I get a f valve or e valve for a v8043e1012 v8043f1012

We have a three zone heat system. Last year one of the zones got stuck open, now one got stuck open.

I read elsewhere in fixya that I can use either the e or f but that it migh tbe easier iwth the f.

I watched the plumber replace theh valve last year, - used an ''E'',but i saw he had to think about the connections soI am thinking the F might be better for me.

Nevertheless, I would like the opinion of a knowledgeable person .

I have mtaken photos of what the current valve looks like

Posted by on

  • teeee Feb 06, 2010

    here are my pics

  • teeee Feb 07, 2010


    Thank for your comment. I probably was not clear enough in my question. My system has three of these valves. One was replaced last year with "e" This year another valve has failed.

    I am trying to decide is I should get another E- which what the plumber had in his truck, or if an F would be easier to install.



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 456 Answers

Usually the zone valve is considered normally open or
normally closed. If this is a dual valve of some sort than you would want to choose the normally closed
position. The valve would probably have a c-terminal,
nc-terminal and a no-terminal. You would want to choose C and normally closed.

Posted on Feb 06, 2010

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:


Honeywell v8043e1012 Zone Valve

The V8043E1012 Honeywell zone valve is one of the most common zone valves installed on many hydronic hot water heating systems. This zone valve has been a rock solid staple in the heating industry for many years.


It is a simple two way on-off low voltage valve that consists of two parts. There is an actuator that has a motor and an end switch, and then there is the valve assembly that controls the flow of the water.

The actuator contains a small 24v synchronous motor to open the valve and hold it open as long as power is supplied to the motor. When power is turned off the spring loaded return pulls the valve back shut. The power to the motor can be control through any low voltage thermostat. Power consumption is only 7.7va so up to 6 valves can be controlled from one 40va transformer. The actuator also has a manual open feature that allows you to manually open the valve in the event of a power failure. The valve will then return to normal operation when the power is restored.

In the event of an actuator failure the motor or the whole actuator can be replaced without removing the valve or draining the system. The replacement process is very easy and can be performed in a matter of minutes. The process only requires the loosening of two screws and the change over of the wiring.

The valve assembly is normally a straight through design that is built in such a way so that the valve can be installed without disassembly. The simple ball design is such that the ball is suspended inside the valve without touch any metal in the fully open position. This allows the valve to be soldered in the piping fully assembled. Each time the valve is opened and closed the ball is turned slightly which keeps dirt from building up at one spot and creating a leak. This also allows for even wear on all surfaces and therefore this valve virtually does not ever wear out from use.

There are some failures in these valves after years of use. The most common things that go wrong are the failure of the motor and the wearing out of the gears inside to the point where they skip and do not open the valve. The end switch will give problems on rare occasions.

Overall after installing hundreds of these valves I rate them as one of the best zone valves on the market. They are easy to install and service. Considering the wear and tear that a zone valve receives the total number of failures seen with these valves is very minimal.

on Jan 15, 2010 | Heating & Cooling

1 Answer

How do I connect a 24v damper motor with 6 colored wires red white yellow green blue black to NO COM NC terminals.

Choose two colors of the thermostat wire, and connect them to the NO and COM and connect them to the zone control board leads for the zone intended. Almost all zone valves spring return open when deenergized. So ensure the zone valve is open with the system is off. At the base of zone valve there is a set screw that needs to engage the damper valve shaft in the open position with the motor in the spring release position. Most zone valve are 90 degree moment from full open to full shut. If you have a Carrier zone valve, they go full open to full shut in 45 degrees of motion. Your open stop need to be set so the valve stops in the full stop position.
To help understand the operation of a zone system, say you have 2 zone system and zone 1 thermostat initiates a heat or cool demand. Zone 2 valves energizes and shuts and zone 1 stays open and allow air to heat/ cool zone 1. If zone 2 thermostat simultaniously initiates the same heat/cool demand, the zone 2 valve opens and both zone heat/cool. When either thermostat is satisfied the opposite zone valve closes and when both thermostat are satisfied both zone valves open.
Hope this helps you understand zone operation. The same works for higher multizone systems.

Jul 27, 2014 | Honeywell Motorized Small Rectangular Hvac...

1 Answer

Wiring a Honeywell V8043E for two zones

Honeywell posts pdf manuals.
Google seArch Honeywell V8043E .pdf
Include .pdf in search parameter to find manual with wiring diagrams.

Oct 26, 2012 | Honeywell V8043E1012 Zone Valve 3/4 Sweat,...

1 Answer

Honeywell CT3600 does not turn off heat

Its hard to say where its getting power from. It should be a normally closed two wire valve, so power must be fed from the tstat only? Not real sure how it's wired. You could try a round of MUSICAL THERMOSTATS? That would answer your question as long as its played properly.

Mar 25, 2017 | Honeywell CT3600 7 Day Electronic...

1 Answer

My heat rises higher than the designated temperature. For example, if I set the thermostat to 60 the temperature will go up to 73. Invensys 9405

there could be a few things causing this, the first would be a bad thermostat. The second would be an improper setting of a heat anticipator on the thermostat, the third could be a stuck zone valve that is allowing heat to go in the zone as another zone is calling. Or it could be a stuck flow check also allowing hot water to flow through the zone much like a stuck zone valve.

If your thermostat is an older one with Mercury in it, replace it with a new one and dispose of properly. If the thermostat is newer, remove the cover or consult the owners manual to see if there is an adjustment that shuts off the thermostat a bit sooner to compensate for the heat that will be released from the system so you do not overshoot your setting on the thermostat. There may be either DIP switches to adjust the setting or a small pointer that slides over a small coil of wire and acts like a dimmer switch. Try adjusting and testing the system to see if it helps. Remember the original settings in case it does not help.

If you have zone valves (small boxes that allow flow of water to the zone) it may be stuck open allowing water to flow into that zone as another zone calls. You can test this by feeling the pipes at a baseboard when you know that the zone over heating is not calling for heat (turn thermostat to lowest setting). Check other zones to see if there is a call for heat in one of them. Make sure you adjust one of the other zones to force a call for heat in it, After a few minutes, feel the pipes in the zone overheating and see if the pipes are getting hot (be careful). This is the same test to check for a stuck flow check valve.

Mar 05, 2011 | Heating & Cooling

1 Answer

I have a Weil-McLain hot water boiler for baseboard heat. The system has one circulator pump. The system has 5 zones - 3 work fine and two are not working. All the zone valves and thermostats are...

Hello.Prob#1 valve has a bad END SWITCH,change the power head,thad brings the circ on when open.Prob#2 try manual overide lever.iS IT TIGHT OR SMOOTH?DOES IT JUMP/SNAP?motor very hot? all bad signs.Change that power head too.The transformers are OK because 1 trans can only run 3 valves max.

Sep 20, 2010 | Honeywell (CT62B1015) Baseboard Heater

1 Answer

Valve replaced , but 1 zone out of 3 no heat when

Hello. Each zone in you home has one thermostat controlling one zone valve. Generally, when a thermostat is calling for heat the zone valve opens and the circulating pump comes on to move the water around that loop. If your other two zones are both working as they should and you now have a new zone valve on the third loop I would suspect that the thermostat is faulty. Regards, Joe

Dec 12, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Three of four zones, baseboard heat, warm house, why not fourth

Go to the last heater in the zone and look for a bleed off valve so you can get the air out of the system. you may have to bleed it off several times as the air works itself thru the system. usually there is a automatic air vent on the very highest point that the system has. Let me know if this helps and have a Merry Christmas

Dec 23, 2008 | Heating & Cooling

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

99 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts


Level 3 Expert

2461 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides