Loosing Pressure

[chillywillie]

Help!
I have a Vokera Linea Max, I charge the pressure up to 1.5 bar and it looses this within 4 to 6 hours. I have looked at all the radiators for leaks but cannot see any. I have had Vokera out so far they have re-mounted the pump, changed the thermistor, changed the control board and now ordered but not replaced a none return valve.

 

[kevplumb]

is the pipe that goes outside wet ?
does the pressure rise above 3 when its running ?

 

[ArtfulBodger]

I have had Vokera out so far they have re-mounted the pump, changed the thermistor, changed the control board and now ordered but not replaced a none return valve.

I have to ask what the hell for? losing pressure? caused by a leaking PRV, ruptured PV diaphram or a plain, ordinairy leak.

 

[kevplumb]

thought it was just me

 

[chillywillie]

To kevplumb

Thanks

Small amount of water discharging from vent pipe when pressure falls too low, this may be due to overheating when pressure drops?

Pressure does not rise once I shut off the filling loop but falls steadilly now loosing 1.5 bar in 3 hours.

I am advised this pressure drop is the equivelent of loosing 1.5 pints of water. If this was a leak in the pipework I would have expected to see some evidence by now (1.5 pints every 3 to 4 hours).

To ArtfulBodger

I know nothing about heating or boilers but I am begining to think thats more than Vokera's agents!

 

[ArtfulBodger]

thought it was just me

hee hee, service agents - don't you just love em

 

[kevplumb]

if your losing water out of the prv thats one leak you need to sort
then you need to find out why the prv has opened in the first place
artful gave you the clue expansion vessel pre charge pressure
would think you need to get the bike pump out

 

[PEDANTICVINDICTIVEMAN]

Ask for money back from Fokera, sound like pratts to me, I know nothing about fokeras but I know loss of pressure is nothing to do with control board or thermistor.