hot water problems

[brooklyn2003]

Hello
Had new central heating boiler and controls fitted few month ago. the hot water has never worked from the boiler being on but works on the immersion tank . The boiler is potterton promax and controls honeywell and 3 port valve honeywell. Timer is honeywell ch and hw 2 way. The plumber maintains that he boiled up my tank when testing from the boiler after install. Any way having looked at the wiring in junction box the 3 port valve wiring on the orange wire has 2 other wires to it. in the boiler manual it shows three other wires to it for my system which has a wall thermostat and no trv on the nearest rad. it does show a diagram for y plan with all rads trv and no wall thermostat which has two wires to it. is it possible for a y plan to have only two wires connected to the orange wire which are cylinder stat and pump and boil up the hot water with the y plan that i have.
Thanks
Have posted photo of wiring on the next page.

 

[diamondgas]

Does your heating work?

 

[Gray0689]

If it didn't work why did you not get the installer back?

 

[brooklyn2003]

yes the heating works, pump works, timer works imersion works 3 port works but no hot water from boiler. i have asked him to come back and he says it must be 3 port broken but i think it must be the wiring.

 

[Gray0689]

Well even if it's 3 port faulty he should at least come back and check it out

 

[brooklyn2003]

what i really need to no is if the wiring is not the same as the y plan in the boiler insrtuctions can the hot water be called for if there is a wire missing to the orange wire from 3 port valve.

 

[PlumbBobBob]

according to my honeywell wiring plan for conventional Y plan there should be three wires connected to the orange, live from the pump live from the boiler and from terminal 1 from the cylinder stat. where is the boiler live connected to at the moment?

 

[brooklyn2003]

grey wire to control panel i think. definately not to orange wire.

 

[brooklyn2003]

any ideas

 

[SafeGasInstall]

if 3 way vale goes on holiday will fail to HOT WATER ONLY ,not ch only

 

[SafeGasInstall]

wiring issue ,get photo of wiring centre and post it here

 

[brooklyn2003]

could the wiring be wrong and if so how could a gas safe engineer commisson the system and sign it off

 

[PlumbBobBob]

i think you need to get someone in to look at your wiring. if you put your area on here maybe one of the members will be near you.

 

[brooklyn2003]

could the wiring be wrong

 

[PlumbBobBob]

quite possibly

 

[brooklyn2003]

picture of the electric wiring. the orange wire is from the 3 port.

 

[brooklyn2003]

the orange wire from 3 port is in the middle.

 

[BLOD]

the two wires connected to the orange wire are probably cylinder stat and boiler switched live.
the pump could be taking its power from the pump live on the boiler - (grey wire bottom left cable ?)

Do the boiler & pump run when hot water is selected on programmer ?

 

[brooklyn2003]

no the boiler doesn't run but the pump does

 

[PlumbBobBob]

i would suggest that you get a honeywell wiring centre they are really easy to use. each wire has it's own place no need to put wires together. probably take you about half an hour to re-wire it. although you have to identify where all the wires go first then you will get it right first time.

 

[BLOD]

no the boiler doesn't run but the pump does

doesn't sound right - it'll need checking with a multimeter to see whats happening.
Unless you're competent at doing this it would probably be best to get someone in.

 

[diamondgas]

:iagree: with BOLD ... pump and boiler come on together! You need someone to correct the wiring ! IMO