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Andrew Smith
Andrew Smith, Home Appliance Technician
Category: Appliance
Satisfied Customers: 3586
Experience:  Gas cooker specialist
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i have a vaillant boiler .It was working fine untill

Customer Question

i have a vaillant boiler .It was working fine untill last mid night.This morning the boiler is not working .?pressure gone down ,the bar shows (0) and the screen shows f.22.Can you help us please?
Submitted: 1 year ago.
Category: Appliance
Expert:  Andrew Smith replied 1 year ago.
***** ***** : Do you have a refilling pint under the boiler
***** ***** : Most times it is a silver flexible pipe attached to the boiler pipework
***** ***** : with a black lever valve at each end?
***** ***** : turn one on fully
***** ***** : turn the other on slowly until the pressure is 1.5 bar
***** ***** : then turn them both off
JACUSTOMER-xogk4f42- :

 

***** ***** :
***** ***** : did you get all that?
JACUSTOMER-xogk4f42- :

we turned both on

JACUSTOMER-xogk4f42- :

then off

***** ***** : did the pressure rise?
JACUSTOMER-xogk4f42- :

but the bar is on red line

JACUSTOMER-xogk4f42- :

***** ***** : so it did not rise?
JACUSTOMER-xogk4f42- :

JACUSTOMER-xogk4f42- :

r u still here

***** ***** : yes
***** ***** : are you getting my coversation your end?
JACUSTOMER-xogk4f42- :

.......................................

JACUSTOMER-xogk4f42- :

***** ***** : yes?
***** ***** : You do't seem to be able to answer my questions?
***** ***** : Did the pressure rise?
JACUSTOMER-xogk4f42- :

JACUSTOMER-xogk4f42- :

sorry

JACUSTOMER-xogk4f42- :

***** ***** : did the pressure rise?
JACUSTOMER-xogk4f42- :

i turned both keys

JACUSTOMER-xogk4f42- :

yes

***** ***** : ok, what pressure now?
JACUSTOMER-xogk4f42- :

3.o

***** ***** : oh?
JACUSTOMER-xogk4f42- :

3.9c

***** ***** : turn them both off
JACUSTOMER-xogk4f42- :

did

JACUSTOMER-xogk4f42- :

ok

JACUSTOMER-xogk4f42- :

now everything is off

***** ***** : you can drop the pressure again by bleeding a radiator back down to 1.5 bar
JACUSTOMER-xogk4f42- :

how?

***** ***** : with a raditor bleed key and a tub to catch the water
***** ***** : [;pp=
***** ***** : ]]]]
***** ***** : sorry - cat typing!
JACUSTOMER-xogk4f42- :

on the radiator key?

***** ***** : Use the key to bleed the radiator and release the excess pressure and water into a tub or bowl
JACUSTOMER-xogk4f42- :

you mean central heating radiator.?

***** ***** : yes and it will drop the pressure
***** ***** : keep going until you get down to 1.5bar
JACUSTOMER-xogk4f42- :

ok but

JACUSTOMER-xogk4f42- :

how did i know is that 1.5

JACUSTOMER-xogk4f42- :

where can i see?

***** ***** : on the boiler
***** ***** : there will be a pressure gauge
***** ***** : so best to do it on the radiator that is in sight of the boiler
JACUSTOMER-xogk4f42- :

my dought is do u know the small dial on the right hand side with two colour line .black and red

***** ***** : it depends which model boiler you have
JACUSTOMER-xogk4f42- :

which is the correct positon of the needle/key.

***** ***** : but it will have a gauge with 0-3 bar
***** ***** : Or red and green marks
JACUSTOMER-xogk4f42- :

we have one dial with two colour but no number.

***** ***** : It should be about 1.5 bar
JACUSTOMER-xogk4f42- :

do u know what is the normal degree and celcious.

***** ***** : normally about 1/3 of a faull gauge
JACUSTOMER-xogk4f42- :

that is the prmanant mark.

JACUSTOMER-xogk4f42- :

when i turned off how is the bar ?

JACUSTOMER-xogk4f42- :

is that 0 level and when i turned on tha bar should up automatically?

***** ***** : The pressure should rise when you open both valves
***** ***** : Once the pressure is above 1 bar, you can reset the boiler and it will start
JACUSTOMER-xogk4f42- :

now i put the heating on heating half level and 41c

***** ***** : Is the boiler firing?
JACUSTOMER-xogk4f42- :

how to re set

JACUSTOMER-xogk4f42- :

yes

***** ***** : It should be fine now if the boiler is firing?
JACUSTOMER-xogk4f42- :

how much is the maximum degree celcious

JACUSTOMER-xogk4f42- :

up to how much would be

JACUSTOMER-xogk4f42- :

now bar needle going to the end/full

JACUSTOMER-xogk4f42- :

is that okay.

JACUSTOMER-xogk4f42- :

can i have your phone no.please.

***** ***** : Maximum temperature should be 80 degrees
***** ***** : Pressure gauge should be at 1.5 bar and not erise any more when heated
***** ***** : Is the heating getting warm?
JACUSTOMER-xogk4f42- :

now the bar shows 3.i

JACUSTOMER-xogk4f42- :

and bleed some water

***** ***** : You should get a plumber to look at this
***** ***** : The pressure should not drop on its own
***** ***** : The pressure should not rise on its own
***** ***** : At least you have heat until you can get someone to look at this

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