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  1. C

    Should my 3 port valve be a 2 port valve?

    Hi, I bought a house last (built 1988) which had a 3 port valve (Honeywell V4073A), a vented cylinder and 2x tanks in the loft. I had a plumbing company remove the cylinder, 2x tanks and replace it with an pressurised cylinder and filling loop along with new radiators. They chose to keep the...
  2. S

    Two port valve question

    Im preparing to clean out my ch system followed by a flush and refill with inhibitor. After ive added a suitable system cleaner and am ready to circulate it around the system. Which position should my 2 port valves be set to? For reference, the system is a fully pumped s plan.
  3. C

    Replacement of a homeywell three port valve

    I have recently changed a honeywell three port valve for a member of staff from where i work along with this fitted a new vented hot water cylinder. As her radiators upstairs were getting hot when the hot water was on. So thinking that the three port was stuck in the mid position i recommended...
  4. I

    Megaflo CL170 2 port valve on primary circuit

    Anyone know it the overheat protection circuit 2 port valve on Megaflo CL170 is normally open or normally closed?
  5. G

    2 port valve sticking open

    Hi, It appears the 2 port valve for the heating is sticking/stuck open. The heating is turned right down on the thermostat but when the hot water is on (separate 2 port valve) the radiators are also getting warm. I'm hoping it doesn't need to be a new valve...... Thanks in advance!
  6. L

    Replacing a 2 port valve

    Can anyone tell me if the thread size on a Honeywell 3/4 imperial valve is compatible with a 22mm valve.
  7. J

    Wiring of 2 port valves on a Green star 32cdi combi

    I was wondering if someone could explain how I would wire 2 2 port valves to a Worcester Bosch 32cdi combi boiler. The whole purpose is to split the heating into 2 separate zones controlled by there own thermostats. all wiring diagrams for the boiler show different connections to what I have...
  8. S

    3 port actuator replaced

    Hi I've just replaced my 3 port actuator. It was pretty straight forward. After I turned the power back on, it blew the 3amp fuse in the circuit board. What have I done wrong?
  9. M

    2 port valve or programmer?

    Hi. I'm needing a bit of reassurance. I've had a long weekend, whilst enjoying my Sunday on the couch someone from around the corner called me to say their hot water wasn't working. It's an S plan with 2x two port valves. Heating works as it should on the timer and room stat. Hot...
  10. A

    3 port hell

    Hi chaps, 15 year old Danfoss HSA3 - valve body was jammed so replaced with Tower 3 port - swapped orange with orange/ brown and white with white / grey with grey now boiler on all the time - incorrect wiring or could programmer also be at fault? thanks guys - dave :banghead::banghead:
  11. R

    honeywell 3 port

    sent my customer to screwfix to pick up a new 3 port. when i took it out the box it got me puzzled as there was only 3 wires and not the 5 as normal.. sent him to get another from the merchant with 5 wire and the serial numbers were all the same! whats that all about???????
  12. V

    3 port valve override floppy - possible wiring problem?

    Hi all, Im hoping one of you experts could shed some light on a potential issue.. but first a little background. In November 2016 I spent considerable money on a new boiler. The job involved: 1) removing old conventional boiler (in kitchen). Remove F&E tank from attic. 2) Install Valiant...
  13. R

    Sunvic MOMO 3 port problem

    I have a problem with a fairly new Sunvic SDMV2304 Motorised Mid Position 3-Port Valve (MOMO). It won't completely shut off the DHW and consequently the cylinder water is too hot. I have checked for complete rotation and this is fine. If I switch on the valve to make a complete rotation it then...
  14. J

    honywell 3 port valve running hot

    just replaced the motor because it was getting hot , new one does the same is this normal, as far as I can work out the motor has to keep running to keep the valve open because of the return spring, is this right, valve works okay with the motor or with the manual lever.
  15. X

    Holding a 3 port valve

    Hi is it possible to hold a vaccum with bungs and change a 3 port valve, and it is 3 openings and I believe you can only have 2 openings, if not does anyone have any other solutions without draining down, or any other tips. thanks
  16. S

    2 Port Valve Operating But Still Intermittent Heating- New to this problem

    Help appreciated to help me think this one through.. :-) Have changed the synchro motor Gears are fine.. micro switch fully engages when hot water is switched on from timer.. you can see and hear the click from the microswitch the switch is calling for the boiler to burn.. hot water no...
  17. F

    Water Hammer on 2 Port Valve

    Hi Can someone help please. I get a massive bang when a two port valve closes. I have secured the pipes. It is an S plan and I believe it is the valve that goes to the hot water cylinder. If I turn the Thermostat up on the cylinder and get hot water from the boiler to flow and then turn...
    • FatBob
    • Thread
    • port valve water
    • Replies: 5
    • Forum: Bathroom Advice
  18. jaydebruyne

    3 & 2 port on same vented system

    Went to look at a job tonight.. when looking at the system it had a 3 port underneath the boiler and a 2 port just before the vented cylinder.. wtf?! Why would that be?
  19. J

    Sunvic motorised valve 3 port query

    I was having a few problems (rads on with only water switch down). Engineer came and fitted a new three port valve and acutator (was Danfoss, fitted Sunvic SD2701). the Sunvic has a metal lever, one side says normal use, the other end say flushing only. The metal lever can be locked on either...
  20. T

    crasslin zone port valve faulty

    Hi, when I switch on the underfloor heating, the entire central heating for the house comes on when they should be independent. I have figured out that one of my 2 zone port valves is faulty. Basically, the manual lever seems to work normally (i.e has resistance when moving it, and then falls...
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