Troubleshooting Chart
Message
Possible Cause(s)
Corrective Action
BACK-UP PUMP
Pump Won't Run
1. Connections not secure
2. Low or defective battery
3. Float switch stuck
4. Defective or blown fuse
1. Check all connections
2. Check battery and replace if low or defective
3. Make sure nothing is interfering with operation of switch
4. Check internal fuse located inside the controller lid. Pull
the transformer from the wall outlet and remove. If the
fuse is blown, replace with onboard 20 amp automotive
type fuse or equivalent
Motor Hums But Pump
Won't Run
1. Defective battery
2. Impeller is locked
1. Check battery and replace if low or defective
2. Unplug pump, remove screen, and check to see if
impeller is free to turn. If impeller is locked, remove
the 7 screws on the bottom of the pump to release the
housing around the impeller. Remove the obstruction.
Reassemble pump and reconnect
Pump Runs But Pumps
Very Little or No Water
1. Check valve missing or improperly installed
2. Obstruction in discharge pipe
3. Discharge pipe length and/or height exceeds
capacity of pump
4. Low or defective battery
5. Blocked vent hole
1. Check to make sure check valves installed between
primary pump discharge and back-up sump pump are
functioning properly
2. Check for obstruction and clear if necessary
3. If discharge is too high, a separate line may be required
with a lower discharge height
4. Check battery and replace if low or defective
5. Check to make sure the back-up pump is not air locked.
Locate the vent hole, inspect, and clear the hole using a
pipe cleaner
Pump Cycles Too
Frequently
1. Check valve problem
1. Check to make sure check valves installed between
primary pump discharge and back-up sump pump are
functioning properly
CONTROLLER
Flood Emergency
1. Inflow exceeds pump rating
2. Inflow exceeds pump rating
3. Battery has become depleted
1. Restore AC pump
2. Incorporate auxiliary pump
3. Replace battery
Check AC Pump
1. Float stuck or obstructed
2. Switch defective
3. AC power interrupted
4. Inlet clogged
5. Defective pump
1. Free float
2. Replace switch
3. Reset breaker or GFCI outlet
4. Clear debris
5. Replace pump
Check Back-up Pump
1. Defective pump
2. Pump jammed
1. Replace pump
2. Clear obstruction
Check BU Pump Fuse
1. Fuse blown
1. Replace fuse
AC Power Failure
1. Defective wall transformer
2. GFCI Tripped
3. Circuit breaker tripped
4. Power outage
1. Replace wall transformer
2. Check for moisture and reset
3. Reset breaker
4. Notify Utilities Company
Less Than 1 Hr Run Time 1. Power outage
2. Extended power outage
1. Notify Utilities Company
2. Prepare spare battery
Replace Battery
1. Battery weak
2. Battery more than 5 years old
3. Discharged and left uncharged for more than 3 days
4. Charging cycles exceed max
1. Replace battery asap
2. Replace battery
3. Replace battery
4. Replace battery
Replace/Inspect Float
1. Float stuck
2. Float defective
1. Clear float and debris
2. Replace float
Check Power Supply
1. Wall transformer defective
1. Replace wall transformer
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Operating Instructions and Parts Manual
WSM3300
www.waynepumps.com
