Airstream 2005 International Trailer Owner's Manual page 79

AIRSTREAM INTERNATIONAL TRAILER
Trouble Shooting
MOTOR DOES NOT OPERATE.
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Is battery discharged?
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Are any wires disconnected?
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Are terminals corroded'?
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Is switch in "ON" position?
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Is fuse good?
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Is water frozen in pump head?
MOTOR RUNS BUT NO WATER FLOWS.
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Is water tank empty?
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Are there kinks in the inlet hose?
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Is air leaking into inlet hose fittings?
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Is inlet line or iii-line filter plugged?
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If using a filter, check the line just before the filter.
•
Is outlet hose kinked?
MOTOR RUNS BUT WATER "SPUTTERS"
Check to be certain that air has been bled off the lines and water heater. Also check for air leaks in the input
side of the pump.
PUMP CYCLES ON AND OFF WHEN ALL OUTLETS ARE CLOSED.
The pump will normally cycle (go on and off) when a faucet is partially opened. If, however, it cycles when
all valves are closed, check for a leak in the lines. It may be a leaky toilet valve or a dripping faucet. Do not
forget to check the outside city water entry valve. It may be leaking.
If no leak can be detected, shut pump off. Remove the output hose where it joins the system (not at the
pump). Insert a plug in the hose and clamp it. (You can make a perfect plug from a barb fitting: ½ " size
with a cap tightly screwed on the threads.) Turn the pump switch on. The pump should come on, run a few
seconds, and then shut off. If it remains off, the problem is NOT the pump. The problem is in the system.
If, however, the pump goes on and off, there may be a problem in the pump. There may be an internal leak
in the pump that allows water to escape from the high-pressure area back into the low-pressure area. Look
for a pump valve held open or a crack in the plastic parts.
PUMP DOES NOT ACHIEVE SHUT OFF
The wall switch may be used for temporary control of the pump. A low battery charge may be the cause. Or
the pump switch mechanism may be stuck. Try tapping the switch cap on the end of the pump with the
handle of a screwdriver. If the pump appears in all other respects to run normally, but fails to shut off, you
may have to replace the switch mechanism.
PUMP HEAD LEAKS
If the pump head leaks, first try to tighten the screws in the pump head assembly until they are snug.
CAUTION
: Do not over tighten. The leak may be from a crack in the pump head assembly. If so,
then replace.
One cause of the pump head cracking may be water freezing inside the pump head. If the leaking water is
escaping back near the motor, check for a leaking or broken piston.
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