4
Chapter 9
FRESH WATER DIAGNOSTIC CHART
PROBLEM POSSIBLE CAUSE POSSIBLE FIX
Air in water system Water tank empty Fill water tank. With pump “on”
bleed air from lines until water
ows without air.
Fresh water pump cycles on and o Water system leak Locate & repair water leak.
No water at sink faucet Breaker blown Reset breaker
Water tank empty Re ll water tank
Switch turned o Turn switch to “on” position
Blocked water lter; pinched line Clear obstruction or straighten line;
clean water lter
Manifold valve turned o Turn on manifold valve
Loose or disconnected wire Check wire connections
Low water pressure Defective fresh water pump Replace water pump
Weak pressure at transom shower Line pinched Find/Repair pinched line
Water to pump. No output. Faulty fresh water pump/pressure
switch
Replace fresh water pump or pres-
sure switch
Fresh water pump continues to cy-
cle
Defective pump pressure switch Replace pressure switch
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