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© Copyright 2018 Zoeller
®
Co. All rights reserved.
Trouble Shooting Guide
A. UNIT DOESN’T RUN.
B. PUMP MAKES LOUD NOISES WHEN
RUNNING.
C. PUMP RUNS BUT DOES NOT PUMP
LIQUID OUT.
D. LIQUID DRAINS BACK INTO PUMP
FROM DISCHARGE LINE.
E LIQUID LEAKS FROM AROUND
CHECK VALVE.
Pump not plugged in.
Low voltage; blown fuse, open circuit.
No condensate in reservoir.
Motor or wiring shorted.
Drain/Discharge line(s) blocked.
Debris in reservoir.
Float bound.
Maximum discharge height exceeded.
Discharge tube blocked.
Check Valve obstruction.
Check Valve damaged.
Check Valve damaged.
Check Valve obstruction.
Highest point of discharge line is less
than 5’.
Check Valve is too tight or too loose.
Plug in.
Have a qualified electrician check fuse circuit.
Be certain the appliance is generating
condensate. Check drain line(s) and/or
discharge line for blockage.
Contact Factory.
Check drain line(s) and/or discharge line for
blockage.
Refer to “Maintenance Guidelines” section for
cleaning instructions.
Refer to “Maintenance” section for cleaning
instructions.
Measure from bottom of pump to highest
point. Rework discharge if height is greater
that 18’. Refer to STEP 3 for guidelines.
Check discharge line for blockage, remove
debris.
Refer to “Maintenance” section for cleaning
instructions.
Contact Factory.
Contact Factory.
Refer to “Maintenance” section for cleaning
instructions.
Check valve may allow some condensate to
drain out of line into reservoir. This is normal.
Check valve should be hand tight, then tighten
an additional 1/2 turn with a 9/16” wrench.
Condition
Possible Cause
Remedy
Before servicing a pump, always shut off the main power
breaker and then unplug the pump - making sure you are not standing in
water and are wearing insulated, protective-sole shoes. Under flooded
conditions, contact your local electric company or a qualified licensed electrician
for disconnecting electrical service prior to pump removal.
If the above checklist does not solve the problem, consult Zoeller Technical
Service Department 1-(800) 928-PUMP - Do not attempt to service or otherwise
disassemble pump.
