Model 330A support & downloads
Large rooms & multi-room facilities
Downloads
Manuals, diagrams and service documents for the Model 330A.
Owner's Manual
Full install, application & service reference.
Parts Diagram & Schematic
Exploded drawing and wiring schematic for the Model 330A.
Master Parts List
Part numbers across the lineup.
Weatherproofing Kit Install
Field-install guide for outdoor use.
Maintenance Guide
Cleaning the filter, glass & electrodes.
Troubleshooting Guide
Symptom → cause → fix.
Safety Data Sheet
Ozone properties & exposure limits.
"Do Not Enter" Sign
Print & post during treatment.
Warranty & Owner Log
Coverage terms + maintenance record.
Video tutorials
Step-by-step guides for the Model 330A — in production now.
Installation & Setup
Unboxing, placement & first run.
Coming soonOperating Guide
Output settings, timers & cycles.
Coming soonTroubleshooting
No-ozone, fuses & common faults.
Coming soonMaintenance & Cleaning
Filter, glass & electrode care.
Videos are in production. In the meantime, the PDF guides above cover every step — or ask a specialist for a live walkthrough.
Common quick fixes
Start here before you call — most issues are on this list.
| Symptom | Likely cause | What to do |
|---|---|---|
| Won't turn on | No power, tripped GFI, or cover not seated on the door safety switch | Check the receptacle/GFI and reseat the cover so the door switch closes. Check the main fuse. |
| No or low ozone | Glass tube not against the gasket, output set low, or dirty/oxidized glass & electrodes | Push the glass firmly to the gasket, raise the output knob, and clean the glass and electrodes (see Maintenance). |
| Snapping / arcing sound | Moisture or dirt inside the unit | Shut down and clean and dry the electrodes and glass thoroughly before restarting. |
| Main fuse keeps blowing | Shorted blower motor or variable transformer | Replace the failed component — order from parts. Do not bypass the fuse. |
See full troubleshooting → · Maintenance steps →
Still stuck on your Model 330A?
Call (903) 525-9336 (Mon–Fri · 8:00–5:00 CT) or email orders@sonozaire.com. High-voltage service should be done by a qualified tech.