Spa filter proof checklist
Spa filter cartridge and low-flow troubleshooting checklist
A low-flow, weak-jet, or no-heat spa call is often a filter proof problem before it is a pack, switch, pump, or heater problem. Capture dimensions and flow context before selling a cartridge or quoting hardware.
Capture first
1. cartridge length2. outside diameter3. inside diameter4. end-cap style5. molded number6. filter bay photo7. flow code8. water-care history
Field-safe checks
- Clean or replace damaged cartridges before assuming a failed flow switch.
- Use a brief filter-out comparison only as a diagnostic where safe; do not leave the spa unfiltered.
- Check whether the cartridge collapsed from age, wrong size, chemical damage, or high suction through a dirty filter.
- Save the proof packet for the distributor or vendor before ordering blind.