Rule Bilge Pumps Troubleshooting Guide

  • This “TROUBLESHOOTING” information is intended to guide in the general determination of pump problems and their solutions.
  • Each manufacturer normally provides a description of warranty conditions.
  • Some pump warranties are immediately voided if the unit is disassembled.
  • Be sure to thoroughly read the owner's manual and warranty.


SYMPTOM

POSSIBLE CAUSE

POSSIBLE SOLUTION

Bilge pump does not run. No water pumped

Wire connections

  • Check wire connection integrity, make sure wire connections are not corroded.
  • A visual check may not be enough, a slight pull on each wire will indicate if wires are still connected.
  • Check to ensure that no wire joints are hanging down into the water

 

Blown fuse

  • Verify correct fuse size, (fuse size is printed on the side of the bilge pump.
  • If fuse size is correct, check impeller through the inlet opening to be sure it is not jammed or stuck with debris.

Repeated blown fuse

Fuse rating or clogged impeller

  • Re-check fuse to verify compliance to pump specifications.
  • Also examine impeller area & clean any obstructions.

Pump runs without water output

Airlocking / cavitating

  • Inspect & reposition hose for short vertical discharge.
  • We suggest installing pump below water line to insure sufficient water flow.
  • Faulty or clogged check valve may add to pump air-locking

 

Pump strainer & impeller area clogged with debris

  • Disconnect pump & clean outside of strainer, clean debris around impeller, & reattached & re-hook wiring

Pump shaft corroded

Electrolysis, cracked housing

  • Inspect pump housing for cracks which can cause leakage into motor cavitycausing corrosion.
  • Possible errant current running through wiring causing corrosion.

Pump stays on after water is pumped out

Wire connections may be incorrect, automatic pumps may have faulty circuit, possible electrical short

  • On bilge pumps check for correct positive and negative battery connections

Nozzle breakage

Hose clamp fastened too tightly

  • Suggest using plastic style hose clamp, do not use pvc hose

Pump impeller spins backward

Check wiring

  • Switch wiring for correct polarity

Wires overheated, melted insulation

Incorrect fusesize, possible jammed impeller

  • Inspect & clean impeller area of any debris.
  • Make sure that impeller is free to rotate.
  • Check to make certain correct fuse rating is installed.
  • REPLACE ALL DAMAGED WIRING