problem with baxi 105 he boiler - flashing red light on 60

[Matt_boro]

i had a boiler fitted about 18 months ago in a house i was renovating. i have had all the radiators off while decorating and only just got round to putting the radiators back on and trying to get the heating to work

as soon as i try the heating or hot water, the red 60 light starts flashing (low pressure?)

the pressure gauge was on 0 so i topped the system up to 1.5... but red light still comes back on as soon as i try the hot water or switch the heating on

 

[powell30]

The pump is airlocked.

Undo the screw in the centre and bleed the pump and make sure the auto airvent nipple is open

 

[kevplumb]

while you have the screw out use a narrow screwdriver and give the shaft a spin it might well be stuck

 

[Matt_boro]

sorry plumbing not my strong point, which screw? and where is the auto airvent nipple?

is it a simple job or would i be best off just calling a plumber?

 

[kevplumb]

View media item 17592undo the screw marked bleed



View media item 11231
undo the black plastic cap

click on pic

 

[Matt_boro]

cheers for the pics, i turned the screw on the pump but water started to trickle out straight away so i guess theres no air trapped in there?

 

[kevplumb]

did you spin the shaft

 

[Matt_boro]

will water not gush out if i unscrew that big screw completely??

 

[kevplumb]

no but have a cloth handy you will get some

 

[Matt_boro]

well i tried taking that screw out, but after a while the water came out at quite a force and practically flooded my loft

 

[kevplumb]

lower the system pressure

if it's throwing water out as you describe it's probably "donald ducked"

 

[Matt_boro]

uh oh... dont like that diagnosis much!

it hissed for a while like air was coming out, but then the water just came out like it was an open tap should that not happen?

 

[kevplumb]

in a word "NO"

happy new pump head sounds like the bearings have gone