Sorry for the delay in replying, I only just came on line and saw your question. Are you still looking for help with this?
Please don't rate my answer until we have explored all possible avenues. Please just use the reply button to contact me.
The power head is an "air stream" model E1350 A. It ha been part of the family for perhaps 25 years. The power head appears to be in good order. The hose is new ... about. two years. The brand is "allegro". The model is X1-0112. It has not been a problem.
I agree that it appears to be a connection issue. My guess is that it is with the wall unit. The wall unit is part of the original installation.
I am told that on occasion to get a good connection at the wall ... it is necessary to turn the hose at the wall. I was considering replacing the unit ... but I thought before I did anything .... I would investigate other.
Hi Rob We tried the wall connection at a second outlet and it functions ok.
Returning to our initial wall outlet ... we having difficulty understanding your instruction " ... making and breaking the connection at the hose end with the wall". Perhaps you can give us more detailed. We have made no progress on the problem ... but I am sure we have correct location of the problem.
Hi FredIf you've swapped the wall plate to a different location, it would seem that the issue may more likely be at the hose end .Does this damaged or kinked at all? Is it possible its damaged internally?Rob
October 01, 2013. Unfortunately, I have been ill and unable to work with you since our last contact. I think it best that I start again from the beginning and work through our problem. Again,this relates to the operation of our central vacuum cleaner and power head attachment. The problem appears to be the hose and the wall unit that the hose plugs into. We cannot get it operating in proper sequence. That is the "pistol" grip has three operating locations. The extreme left(1) is to operate the air only, the middle(2) location is the "off" position for all functions,and the extreme right(3) position is to operate the air and the power head at the same time.
1) When we place the hose in the wall between the dimple markings ... the (2) position is off as it should be, the (1) position has air suction as it should and (3) position has no suction but the motor to power head is on.
2) Facing the wall and turning the hose to the right or left of the dimples in the outlet (1) and (3) positions on the pistol work for motor and air properly but (2) position does not turn off the operation.
The wall unit is new and the hose unit is about two years old. There is no damage to the chrome sleeve. We are also having similar problems with a second outlet.
Thanks for your patience. I agree the hose is likely the problem. As I mentioned the hose is fairly new and has a "pistol grip" at one end. I guess the problem is within the pistol grip. The next issue is can this problem be fixed, is it worth fixing or should it be replaced?
I would like to add to your bucket of experience. I recalled that we still had our older straight hose. I dug it up and put it through the same tests. The result or performance was identical. Both hoses responded the same. So ...can we have two hoses with identical malfunctions?
I wonder if there is a disruption of a signal from a mechanism within the vacuum cleaner itself?