Mach 5 Continously cycling - Luxury Coach Lifestyles
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Old 08-10-2013, 12:26 AM   #1
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lbrachfe's Avatar
Join Date: Jun 2011
Location: Home base is Palm Beach, Florida
Posts: 449
Default Mach 5 Continously cycling

Have reprimed and both city water and the aux pump work fine except varying pressure up and down. will clean the red hat valve in the morning. Any other ideas ????

Larry & Hedy Brachfeld
2003 Double Slide, Detroit 60
Coach # 646
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Old 08-10-2013, 12:54 AM   #2
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Join Date: Sep 2006
Location: Sugarland, TX or Salida,CO
Posts: 1,867

Hi Larry,

Do you have a Cycle Alarm?

Excessive cycling (continuous on/off
operation) can causes the temperature to rise inside of
the pump and damage it. Common causes of cycling are
small leaks or very low flow rates (i.e. ice makers, R.O.
filters, etc.) in a plumbing system without a pressure
accumulator tank. A check valve installed directly on the
discharge of the pump can also cause cycling. If very
low flow devices are going to be installed, Headhunter
recommends the installation of a small pressure
accumulator tank in the plumbing system.


If Ain't a Newell, It Ain't Wurt Oonin!
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Old 09-16-2015, 06:21 PM   #3
Join Date: Dec 2009
Posts: 82

mine was continuously running . the red hat valve was stuck open and bleeding the water pressure off back into the tank and the pump would stay on
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Old 09-18-2015, 09:20 PM   #4
Join Date: Dec 2010
Location: tiki island texas
Posts: 47
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pressure switch in the pump, easy to change make sure and drain pump before replacing
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