QuickClean™ Ultrasonic Cleaners Troubleshooting Chart

Liquid Level Low (Repeatedly)

Symptom	Probable Cause	Check	Correction
Liquid Level Low (repeatedly)	Liquid is not touching the Level Sensor.	Check that the Level Sensor and surrounding area is clean of contaminant.	Fill tank to required level.
	Detergent not added (water too pure).	Short sensor to tank with screwdriver.	Add detergent.
	Disconnection or failure of Level Sensor Component.	Check connection to Control Board and resistance of Level Sensor. Refer to: Level Sensor Test	Reconnect or replace Level Sensor if faulty. Refer to: Level Sensor Replacement

Over Temp (Repeatedly)

Symptom	Probable Cause	Check	Correction
Over Temp (repeatedly)	Tank temperature sensor is reading that liquid is above 60°C /140°F.	Check fluid temperature. Ensure temperature is below 60°C /140°F.	Allow fluid to cool or drain some fluid and replace with cooler fluid.

Rapid Temperature Fluctuations

Symptom	Probable Cause	Check	Correction
Rapid Temperature Fluctuations	Disconnection or failure of Temperature Sensor.	Check connection to control board and resistance of Temperature Sensor. Refer to: Temp Sensor Test	Reconnect or replace Temperature Sensor if faulty. Refer to: Temp Sensor Test

Sensor Fault / Over Temp (in Cycle)

Symptom	Probable Cause	Check	Correction
Sensor Fault / Over Temp (in Cycle). Erratic temp readings.	Temperature Sensor open circuit or disconnected .	Check connection to Control Board and resistance of Temperature Sensor. Refer to: Temp Sensor Test	Reconnect or replace Temperature Sensor if faulty. Refer to: Temp Sensor Test

Sensor Fault / In Standby

Symptom	Probable Cause	Check	Correction
Sensor Fault / In Standby	Temperature Sensor close circuit.	Check resistance of Temperature Sensor. Refer to: Temp Sensor Test	Replace Temperature Sensor if faulty. Refer to: Temp Sensor Test

Unit Over Temp

Symptom	Probable Cause	Check	Correction
Unit Over Temp	Base Plate Temperature Sensor reads that transistors have reached 100°C/212°F.	Check with user the frequency of use. Avoid consistent use without time to cool.	Allow time to cool.
		Check that the bath has not been over loaded (large mass).	Remove excessive items from tank and restart cycle.
		Check that the bath has not been run without sufficient fluid.	Fill tank to required level.
			Check that the level sensor has not been turned off in the advanced menu and run without sufficient fluid.

Sonics Low

Symptom	Probable Cause	Check	Correction
Sonics Low	Sonics feedback exceeding limits.	Check that the tank has not been over loaded (large mass).	Remove excessive items from tank and restart cycle.
	Ultrasonic Generator PCB Fuse blown.	Check 2 x Fuses on Ultrasonic Generator PCB. Refer to: IGBT Test	Replace fuses. Refer to: PCB Fuses
	IGBTs blown.	Check 2 x IGBTs on Ultrasonic Generator PCB. Refer to: IGBT Test	Replace Base Plate Assembly.

No Display

Symptom	Probable Cause	Check	Correction
No Display	No power.	Check that main power is connected. Check that main Power Switch is in ON position.	Connect mains and switch on unit at the rear.
	No power.	Check main fuses.	Replace fuses at rear of bath.
	Ribbon cable between Control PCB and Power Supply PCB is disconnected.	Check ribbon cable connection.	Reconnect ribbon cable.
	Power Supply PCB fuses blown.	Check Power Supply PCB fuses.	Replace Power Supply PCB fuses.
	Missing 5VDC operating voltage.	Check for 5VDC from ground to pin 4 of ribbon cable connections. See wire diagram for pin locations.	Replace ribbon cable or PC board missing 5VDC.
	Faulty LCD.	Check all the above.	Replace LCD.

Backlight without text on LCD Display

Symptom	Probable Cause	Check	Correction
Backlight without text on LCD Display	Contrast not set.	Check if text appears while adjusting the pot on the Control PCB.	Adjust contrast. Refer to: LCD Display Contrast Adjustments

Pixels missing from LCD Display

Symptom	Probable Cause	Check	Correction
Pixels missing from LCD Display	Fluid entered LCD Display.	Eliminate the source of fluid.	Replace LCD Display.

Touch Pad buttons not responding

Symptom	Probable Cause	Check	Correction
Touch Pad buttons not responding	Fluid entered Touch Pad.	Eliminate the source of fluid.	Replace Touch Pad.
Touch Pad buttons not responding	Faulty Touch Pad.	Check all the above.	Replace Touch Pad.

Fluid Leaking

Symptom	Probable Cause	Check	Correction
Fluid Leaking	Plumbing.	Check all plumbing joints.	Tighten, seal or replace affected joints.
Fluid Leaking	Severe cavitation erosion.	Check for excessive pitting in the base of the tank, visible from outside.	Replace ultrasonic.

No Power

Symptom	Probable Cause	Check	Correction
No Power	Not plugged into power outlet.	Check main power connection.	Connect to power.
	IEC fuses blown.	Over current.	Replace IEC Fuses. Refer to: Power Socket Fuses
	Faulty Power Switch.	Check switch illuminates in On position.	If not illuminated, replace Power switch. Refer to: Power Switch
	GFI is tripped.	Check if GFI is tripped	Reset GFI
	Weak / Faulty GFI outlet.	Check if sterilizer works on different GFI outlet	Contact an electrician to replace GFI outlet
	Voltage leak through components	Check all electrical components and wire connections for deterioration	Secure / Clean / Replace compromised component.

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