Sink and Surface Sanitizer Troubleshooting (Troubleshooting Guide)

On this page

Quick answer
Confirm the symptom
Tools and prep
Step-by-step troubleshooting
Common causes table
Parts matching
When to call a pro
FAQ
Related guides

Quick answer

To fix a sink and surface sanitizer, first ensure it is properly connected to the water supply and power. Check for clogs in the nozzles and clean or replace filters if necessary. If the issue persists, consult the manufacturer's manual or a professional.

Confirm the symptom

Sanitizer not dispensing liquid
Foul odor from the dispenser
Water dripping from the dispenser when not in use
Sanitizer not activating when hands are placed under the nozzle
Leaking around the dispenser base

Tools and prep

Adjustable wrench
Screwdriver
Cleaning brush or toothbrush
Replacement filters or sanitizer solution
Plumber's tape
Bucket or towel to catch water
Turn off water supply to the sink before starting
Ensure the area is dry to prevent slips

Step-by-step troubleshooting

Check Water Supply
Do: Locate and turn on the water supply valve under the sink.
Observe: Water should flow through the dispenser when activated.
Means: If no water flows, the valve may be closed or there may be a blockage.
Next: Proceed to 'Inspect Nozzle for Clogs'
Inspect Nozzle for Clogs
Do: Use a cleaning brush or toothbrush to clean the dispenser nozzle.
Observe: Debris or mineral buildup should be removed.
Means: Clogs can prevent proper dispensing of the sanitizer.
Next: Test the dispenser
Test the Dispenser
Do: Place your hands under the dispenser to activate it.
Observe: Sanitizer should dispense smoothly without dripping.
Means: If it still doesn't work, there may be an issue with the sensor or internal components.
Next: Check the sensor
Check the Sensor
Do: Ensure the sensor is clean and not obstructed.
Observe: The sensor should detect movement and activate the dispenser.
Means: A dirty or faulty sensor can prevent activation.
Next: Replace or clean the sensor if necessary
Replace Filters
Do: Remove old filters and install new ones according to the manufacturer's instructions.
Observe: The sanitizer should now dispense without a foul odor.
Means: Old or dirty filters can cause odors and reduce effectiveness.
Next: Monitor for improvement
Tighten Connections
Do: Use an adjustable wrench to tighten any loose connections under the sink.
Observe: Leaking should stop if connections were loose.
Means: Loose connections can cause leaks and reduce water pressure.
Next: Check for leaks
Check for Leaks
Do: Inspect all connections and the base of the dispenser for water.
Observe: No water should be present if everything is sealed properly.
Means: Leaks indicate a problem with seals or connections.
Next: Apply plumber's tape if needed

Common causes

Cause	Likelihood	Difficulty	Part often needed
Clogged Nozzle Mineral deposits or debris can block the dispenser nozzle.	Common	Easy	Cleaning brush or toothbrush
Faulty Sensor Dirt or malfunction in the sensor can prevent activation.	Sometimes	Easy–Medium	Sensor cleaning kit or replacement sensor
Low or No Water Supply The water supply valve may be closed or there could be a blockage.	Common	Easy	None
Worn or Damaged Filters Old filters can cause odors and reduce sanitizer effectiveness.	Sometimes	Easy	Replacement filters
Loose Connections Loose fittings can cause leaks and reduce water pressure.	Common	Easy	Plumber's tape or new washers
Internal Component Failure Issues with internal parts like the pump or motor can prevent operation.	Rare	Hard	Professional repair or replacement unit

Parts matching

Common parts needed for sink and surface sanitizer repairs include:

Cleaning brush or toothbrush for nozzle cleaning
Replacement filters for odor and effectiveness
Sensor cleaning kit or replacement sensor
Plumber's tape for sealing connections
Adjustable wrench for tightening fittings

Always refer to the manufacturer's manual for specific part recommendations and compatibility.

When to call a professional

The dispenser still does not work after replacing filters and cleaning the nozzle
There is a persistent leak that cannot be stopped by tightening connections
Internal components like the pump or motor are suspected to be faulty
The sensor does not respond even after cleaning and calibration
You are unsure about the correct procedure or part compatibility

FAQ

How often should I clean the sanitizer nozzle?

Clean the nozzle at least once a month to prevent clogs from mineral deposits and debris.

Can I use any cleaning solution to clean the dispenser?

Use mild soap and water or a vinegar solution to avoid damaging the dispenser components.

Why is there a foul odor coming from the sanitizer?

A foul odor is usually caused by old or contaminated filters that need to be replaced.

How do I know if the sensor is faulty?

If the dispenser does not activate when hands are placed under the nozzle and cleaning does not help, the sensor may be faulty.

What should I do if the water supply valve is closed?

Locate the valve under the sink and turn it clockwise to open. If it is damaged, contact a professional plumber.