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Troubleshooting your Sonozaire.

Applies to all models. Work top to bottom — most issues are power, a seated glass tube, or dirty electrodes. These units carry high voltage (10kV+); only a qualified tech should open and service them.

Symptom	Probable cause	Solution
Machine not working	Power to the receptacle is off	Check the receptacle for power or a tripped GFI.
Machine not working	Cover not on well enough to close the door limit switch	Tighten or adjust the cover so the door switch fully closes.
Machine not working	Main fuse blown	Replace the main fuse with the spare fuse.
Machine not working	Failure of on-off switch or timer	Replace the on-off switch, contacts, or timer.
Machine not working	Failure of door limit switch	Replace the limit switch.
Machine not working	Failure of blower motor	Verify the blower motor rotates and hasn't failed. If it's an oil-type motor, lubricate; replace if necessary.
No ozone or low output	Glass tube(s) not up against the gasket(s) on the blower or plenum	Push the glass tube(s) firmly to the gasket(s) to stop air bypassing the generator.
No ozone or low output	Ozone level setting too low	Increase the setting.
No ozone or low output	Dirty or oxidized glass tube(s) and electrodes	Clean the glass and electrodes, or replace them.
No ozone or low output	Cracked glass insulator(s)	Replace the glass insulator tube(s).
No ozone or low output	Blown HV transformer fuse	Verify the fuse is blown and replace it. Check the glass.
No ozone or low output	HV transformer failed	Test the transformer and replace if required.
No ozone or low output	Dirty, worn, or broken variable-transformer wiper (brush)	Clean or replace the variable-transformer wiper.
No ozone or low output	Variable transformer, rheostat or resistor failed	Test and replace components if required.
No ozone or low output	No air movement (blower not operating)	Clean the filter, free the blower of obstructions, oil the motor with 20W oil. Replace the motor if necessary.
Snapping / arcing sound	Too much moisture or dirt inside the unit	Shut down and clean/dry the electrodes and glass. A clean unit makes a low hissing/buzzing corona sound, not snapping.
Main fuses blown	Shorted variable transformer or rheostat	Replace the component.
Main fuses blown	Shorted blower motor	Replace the blower motor.
Transformer fuses blown	Transformer shorted	Replace the transformer.
Transformer fuses blown	Glass insulator tube very dirty, damp, or cracked	Clean the glass and electrodes, or replace the glass tube(s) and electrode(s).
Transformer fuses blown	Wire insulation breakdown	Locate the wire failure and replace.

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