Water Pump - Troubleshooting - Holiday Navigator 2003 Owner's Manual

Water Systems
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Water Pump -
Troubleshooting
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Vibration induced by road conditions can cause the plumbing or pump
hardware to loosen. Check the water pump system for components that are
loose. Many symptoms can be resolved by tightening the hardware. Check the
following items:
The water pump will not start or blows the fuse:
• Check the electrical connections, fuse or breaker, main switch and
ground connection.
• Check the electrical connections at the latching controller.
• Is voltage present at the pressure switch on the pump? If voltage is
present the pressure switch may be faulty. As a test, temporarily
bypass the pressure switch.
• Is the latching controller grounding the water pump?
• Check the charging system for correct voltage and good ground.
• Check for an open or grounded circuit or motor.
• Check for a seized or locked diaphragm assembly (water frozen).
The water pump will not prime or sputters (No discharge/motor runs):
• Is the pump inlet strainer clogged with debris?
• Is there water in the tank or has air collected in the water heater?
• Is the inlet tubing and 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 or continues to run when the
faucet is closed:
• Check to see if the fresh water/tank fill valve is completely closed.
• Check the output (pressure) side plumbing for leaks and inspect for a
leaky toilet or valves.
• Look for a loose drive assembly or pump head screws.
• Are the valves on the pump 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 that 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 water flow in the faucets or shower heads.
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