Holiday 2002 NEPTUNE, Owner'S Manual

Page: 187 / 344

Water Systems
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2 0 0 2 N E P T U N E
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Vibration induced by road conditions can cause the plumbing or pump hard-
ware to loosen. Check for system components that are loose. Many symptoms can
be resolved by tightening the hardware. Check the following items:
The water pump will not start/blows the fuse:
• Check the electrical connections, fuse, breaker, main switch and
ground connection.
• Is the motor hot? The thermal breaker may have triggered. It will reset
when cool.
• Is the voltage present at the switch? Bypass the pressure switch.
• Does the pump operate? Check the charging system for correct voltage
and check the pump for the proper ground connection.
• Look for an open or grounded circuit or motor.
• Check for seized or locked diaphragm assembly (water frozen).
The water pump will not prime/sputters: (No discharge/motor runs):
• Is the strainer clogged with debris?
• Is there water in the tank or has air collected in the hot water heater?
• Is the inlet tubing/plumbing sucking in air at plumbing connections
(vacuum leak)?
• Check for proper voltage with the pump operating.
• Look for debris in the pump inlet/outlet valves or dry/swollen valves.
• Check the pump housing for cracks or loose drive assembly screws.
The water pump will not shut-off/runs when the faucet is closed:
• Check to see if the fresh water tank fill valve is completely closed.
• Check output side (pressure) plumbing for leaks and inspect for a
leaky toilet or valves.
• Look for loose drive assembly or pump head screws.
• Are the valves or the internal check valve held open by debris or is
the rubber swollen?
The water pump is noisy or rough in operation:
• Check for plumbing which may have vibrated loose.
• Does the mounting surface multiply noise (flexible)?
• Check for mounting feet that are loose or compressed too tight.
• Look for loose pump head to motor screws.
The water pump is rapid cycling:
• Look for restrictive plumbing/flow restrictors in the faucets or
shower heads.
Water Pump -
Troubleshooting