boiler glowworm 18 hxi banging klunking

[roundstone]

Hi my boiler is making a loud banging noise, when i first switch it on it fires up fine then after about 10 seconds makes a loud banging noise then shuts down, then follows a gurgling sound, I change the pump about 2months ago and can hear it working in the airing cupboard when my wife turns the boiler on.

Help please

 

[fixter1]

condensate blocked by the sounds of it mate

 

[roundstone]

any ideas on how to unblock it and what to use?

Many thanks for thr reply

 

[fixter1]

try warm water over the plastic pipe that gos out side...dose it have a flex pipe leading from the trap to the 21.5mm plastic on the boiler see if you can pull the pipe off the trap

 

[Billy Bob Bob]

blocked condensate +1 as said boiling water over the white external over flow pipe or it may be 32mm

 

[roundstone]

that is all clear could it be scale build up in the boiler if so how can i descale?

 

[roundstone]

(blocked condensate +1 as said boiling water over the white external over flow pipe or it may be 32mm)
is that the drain white pipe that goes outside that is all clear

 

[gasmarc]

there maybe trouble ahead if that is all clear and you are getting noises ,i presume there is enough water in the system

 

[roundstone]

just undone the cap on the bottom of the small condense trap some water came out

 

[roundstone]

the system is full of water

 

[roundstone]

the pipe on the bottom of the boiler the flexy pipe that goes in to the trap sould water be coming from there??? because it is none

 

[roundstone]

the black pipe on the bottom of the boiler that goes in to the trap no water is coming from there. should water flow???


Thanks

 

[gasmarc]

yes water should be coming from there

 

[gasmarc]

trickle i think

 

[roundstone]

well nothing is coming out from there? so what could the problem be??

 

[gasmarc]

i doubt it is frozen that far up but you could switch the boiler of and run a hair dryer over the pipe

 

[roundstone]

the water in the trap was ok could the block be inside the boiler

 

[gasmarc]

no if the boiler has backed up due to a frozen pipe it can do damage that is un repairable I am afraid to say

 

[fixter1]

check the pipe what runs from the trap inside the boiler remove and check for blockage make sure you cover all electrics

 

[roundstone]

hi just took it off and it is empty no water came out from the pipe from trap to boiler there was a little water in the trap. does this mean inside the boiler the water could be blocked?

 

[gasmarc]

try blowing on pipe to see if its clear

 

[fixter1]

like gas marc said try blowing on the pipe

 

[roundstone]

all done now just had to descale the boiler heat exchanger.
Thanks

 

[gasmarc]

how did you go about that and is it now working