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Headhunter running all the time
#1

Hope somebody has some trick for this to stop....

When I got the coach the Headhunter 110v pump was leaking inside, was not repairable so I got a new pump from Headhunter.

I installed it like the old one and it works ok for the first cycle after the switch is turned on.
After a faucet is turned on, the pump sees pressure drop, it restarts and about 10 sec later it briefly stops and restarts on and on and on again....cycling all the time.
Every time the main pump stops I can see a brief jolt into the 12V Aux pump ( starts for a second then shuts off) and will repeat every time the 110V pump stops and immediately restarts.

Naturally, I think leak in the system. Look everywhere, close each circuit to see if I get to stop...nothing. 

I then shut off the 110v pump and leave on just the Aux 12V pump that is in parallel in the system. This pump runs perfect. Builds up the pressure, stops, open a faucet starts fine, close the faucet, the pump runs a few seconds and shuts off. I wait it out thinking that maybe there is a slow leak and the 110V pump is more sensitive to pressure.....nothing.
The whole system is tight.

I go then and flip the 110V pump back on, starts, runs a few seconds, shuts off....I am happy...then open the outside faucet and the cycle starts again and it never stops....keeps cycling.

Took it out of the system several times, checked everything, primed it to full from the beginning, reprimed, fill both ends, never ran dry .....The only thing I can think of is that the plastic check valve they build into the Intake is not seating and allows the pump to read low tank pressure and makes it restart.....or the brand new pump is defective and the head pressure internal switch is bad....

Any thoughts ? It is driving me crazy.

MG
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Messages In This Thread
Headhunter running all the time - by InfiLights - 07-17-2016, 06:07 PM
RE: Headhunter running all the time - by folivier - 07-17-2016, 06:36 PM
RE: Headhunter running all the time - by InfiLights - 07-17-2016, 06:47 PM
RE: Headhunter running all the time - by encantotom - 07-17-2016, 08:31 PM
RE: Headhunter running all the time - by Richard - 07-18-2016, 08:06 AM
RE: Headhunter running all the time - by InfiLights - 07-18-2016, 12:28 PM
RE: Headhunter running all the time - by encantotom - 07-18-2016, 01:55 PM

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