I went to a Puma yesterday expecting to find a failed EXV.
The problem was in fact a blocked communication pipe between the boiler and the EXV.
Luckily this the first case I have encountered on this model. Unfortunately, the connection to the EXV is inaccessable so it cannot be replaced.
The boiler end of the communication pipe is a narrow elbow at about 8 mm.
Has anyone had much success at clearing a blockage on this pipe from the front?
Just to put the strength of the blockage in perspective, it withstands 1 Bar in the EXV or in the boiler !
Tony
The problem was in fact a blocked communication pipe between the boiler and the EXV.
Luckily this the first case I have encountered on this model. Unfortunately, the connection to the EXV is inaccessable so it cannot be replaced.
The boiler end of the communication pipe is a narrow elbow at about 8 mm.
Has anyone had much success at clearing a blockage on this pipe from the front?
Just to put the strength of the blockage in perspective, it withstands 1 Bar in the EXV or in the boiler !
Tony