Page 14
ZXC-SERIES™ | Installation and Operation Manual
Section 6. Troubleshooting
1. For a list of common problems and solutions see the Troubleshooting Guide below.
2. Zodiac recommends that you call a qualified service technician to do any work on the filter/pump
system. For technical service,
in Australia please call 1300 763 021,
in New Zealand please call 0800 807 665.
Fault Symptom
Possible Problems
Solutions
Water is not clear
Insufficient disinfectant level.
Check and adjust disinfectant level.
Incorrect pool chemistry.
Test and adjust water chemistry.
Heavy bathing and/or dirt loads.
Adjust filter time and/or water chemistry.
Insufficient running times.
Increase pump run time.
Filter is dirty.
Clean filter cartridges per instructions.
Hole in filter element.
Replace cartridge.
Low water flow
Filter system strainer baskets dirty.
Check and clean strainer baskets.
Air leaks on suction side of pump.
Check all connections between pool intake
and pump.
Restrictions or blockage in either suction
or return lines.
Check all lines for debris or partially closed
valves.
Filter cartridges need to be cleaned or
replaced.
Clean or replace filter cartridges per
instructions.
Pool water level too low.
Fill pool so level is above pump inlet line.
Pump not primed.
Fill pump with water at basket and replace
lid.
Pump impeller vanes blocked.
Technician required.
Strainer baskets not being used and/or
broken
(Allowing debris into pump).
Replace baskets.
Pump operating under speed (low voltage). Technician or electrician required.
Short filter cycles
Presence of algae clogging filter.
Check disinfectant content.
Incorrect water chemistry.
Check pH, total alkalinity and TDS.
Pump output exceeds design flow rate of
filter.
Check pump performance.
Ineffective cleaning.
Clean or replace filter cartridge per
instructions.
High pressure
on start-up
Small eyeball fitting in Pool/Spa.
Replace with larger diameter fitting.
Partially closed valve on return line.
Check and fully open all valves on return
line.
Too large of pump.
Check pump and filter selection.
Filter cartridges dirty.
Clean filter cartridges per instructions.
Dirt returns to pool
Hole in filter cartridge.
Replace filter cartridge per instructions.
Worn o-ring seal inside filter.
Replace o-ring.
