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I have just replaced the motor on my Honeywell V4043H valve but when I have wired it up there is not hot water coming to the radiators. Does it matter which wire from the motor connects with the other wires. There are a blue and brown wire - but as the motor wires are the same orange colour there is no indication which connects to which

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Im assuming that--
you waited long enough for the valve to open
you used the manual lever to check for flow
same thermostat
boiler isn't off on reset
theres power to the boiler
Do you hear the valve energize? If not--
The orange wires are interchangeable so it dosnt matter. the zone valve is normally closed so it wont open unless it gets power from a call for heat. Follow the blue and brown wires down to the control and make sure they aren't cracked. Check for water in control panel. Pull relay and look for small soot mark inside (blown).If wires have been spliced at any point remove wire nuts restrip wire and use NEW wire nuts to reconnect.At control remove wires one at a time clip and strip and reconnect. make sure the wire is wrapped around screw and tighten. If valve still isn't opening check the corresponding TT terminal connections clip and strip and reconnect.Still no water? With wires removed jump the TT terminals. If it powers after at least 15 sec then it may be either you thermostat or the wire going to it.
It could also be on the water side. If the plunger inside the valve body is stuck closed or clogged you can either isolate and drain the zone, remove the brass plug and dig around or buy a zone valve WITH the brass body. isolate and drain the zone, sweat off the old one and sweat on a new one. I know...good times :-{

Posted on Feb 24, 2019

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TBlessed 1
  • 61 Answers

SOURCE: ceiling fan wires

is the old fixture still installed?

Posted on Oct 17, 2008

boanhtgclg
  • 34 Answers

SOURCE: I've tried to install a

the colors aren't all that important.  make sure the letters on the thermostat and the letters on the furnace control board have the same wire connected.  that's all you need to do.

Posted on Dec 06, 2008

jgwhomeequip
  • 1902 Answers

SOURCE: heat will not shut off

Take white off of Aux, and attach it to L

Posted on Feb 16, 2009

pierre1811
  • 144 Answers

SOURCE: I have Bryant HRV and the motor has failed.

Wire nut and tape the blue and red wires they are not used.

Posted on Mar 06, 2009

  • 16 Answers

SOURCE: cannot get central heating working,for honeywell ST6400 programme

with y plan 3 connections on programmer HW on HW off CH on HW on to cylinder stat then HW call to Orange on Mvalve to power boiler and pump HW off to grey wire on Mvalve to close hot water CH to room stat common then heating call to white on Mvalve

Posted on Aug 17, 2009

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