Hot water from Valliant Boiler

[AMGasServices]

I’d say the hot water valve is causing the problem.

Replace the valve with a honeywell (they are very robust).

 

[Burger]

It won’t be the cause, but there Should be a strap on the cylinder thermostat.

 

[Aire]

It won’t be the cause, but there Should be a strap on the cylinder thermostat.

Temperatures also set wrong and it's installed in the wrong location

 

[Burger]

That zone valve could be stuck, I’m not keen on those Drayton ones.

 

[Burger]

Temperatures also set wrong and it's installed in the wrong location

Hadn’t seen that in first pic, but mysteriously the strap is on?

 

[Margaret T]

Temperatures also set wrong and it's installed in the wrong location

Thanks, Craig, should the temperature on the boiler be changed? or the thermostat attached to the blue cylinder. If so, what should this read? What's in the wrong location? Thanks a lot.

 

[Margaret T]

If youve had everything new, then as everything is only 6 months old i would call the engineer back who installed it as it's still under warranty.

Yes, everything new, 6 months old, boiler, hive + controls in air-cupboard, zone valves, magnetic filter. I have tried calling the engineer back but not getting any luck and yes the issues occurred from January 2019.

 

[EvilDrPorkChop]

Sounds to me like there's a wiring issue somewhere. I doubt there is anything wrong with the boiler if the heating is working fine, plus the HW works when the CH is on. It's a controls issue such as wiring or fault zone valves.

 

[Aire]

Thanks, Craig, should the temperature on the boiler be changed? or the thermostat attached to the blue cylinder. If so, what should this read? What's in the wrong location? Thanks a lot.

The thermostat attached to the cylinder should be set between 60 and 65°c, and the location of the thermostat should be 1/3 from the base of the cylinder, current it is too close to the base. These minor issues though won't be causing your issues with the hot water.

 

[king of pipes]

Not the best install but nothing obvious from your pictures apart from no auto bypass ? You need a route for the pump overun to circulate and displace the heat in the boiler when the 2 port valves close , you definitely should not need to have the immersion heater on 24 - 7 they are more for a back up should something fail , if I had to diagnose the fault I would start with checking the 2 port valve on the hot water system , check it is motoring open when the cylinder stat temperature is turned up and then down when the hive is in a hotwater call mode ? , next I see on the cylinder primary return has a balancing type valve this may need adjusting or even removing as it maybe the problem better to fit a lockshield type gate valve for balancing ? Few thing there for you to consider Margret . Please post your findings regards. kop