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| STERO UNDERCOUNTER DISHWASHER & GLASSWASHER
Symptom
Possible Causes
No machine operation (no display).
1. Machine OFF – turn machine ON.
2. Blown fuse or circuit breaker off at power supply.
3. Cord not plugged in (corded models only)
No machine operation (with display).
1. Display: "DOOR OPEN" – open and close door. If problem persists,
contact your local service provider.
2. See "Machine will not fill or will not fill high enough".
Dishes not clean.
1. Strainers clogged causing inadequate water supply to pump – clean
according to instructions. (See CLEANING.)
2. Obstruction in wash arm(s) or wash arms will not turn – clean according
to instructions. (See CLEANING.)
3. Wash and/or rinse arms will not turn – check that they spin freely.
4. Detergent dispenser may be clogged.
5. Soil quantity – scrape dishes before cycle.
6. Improper rack loading. (See PREPARATION.)
7. Low water – check water supply.
8. Water temperature too low – note wash temperature on display during
WASH; should be above 120°F for chemical sanitizing machines and
above 150°F for high temperature machines.
9. Incoming water supply turned off.
Spotting of silverware, glasses, or
dishes.
1. Improperly loaded racks.
2. Water temperature too low.
3. Improper type or concentration of detergent – contact your chemical
representative.
4. Hard water – install a water softener; use a rinse agent.
5. Insufficient fill – check water supply.
Chemicals not feeding.
1. Low on chemicals – check levels.
2. Air leak at feeder hose connections – check insertion of quick connect
fittings and wire ties at tube to tube connections.
3. Tubes kinked – check for smooth bends.
Food soils remain in dishwasher.
Follow daily cleaning instructions. (See CLEANING.)
Appearance of rust in machine.
1. Ensure steel wool is not used to clean machine.
2. May be due to high iron content in water supply.
TROUBLESHOOTING
This section outlines various symptoms and possible causes that may be encountered in the event of abnormal
machine operation. If symptoms persist after possible causes have been checked, service may be required.
