STERO SD3 DOOR-TYPE DISHWASHER |
19
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.
Symptom
Possible Causes
No machine operation.
1. Machine off, turn machine on.
2. Blown fuse or tripped circuit breaker at power supply.
3. Check tank water level.
Dishes not clean.
1. Insufficient wash water due to drain obstruction preventing proper drain closing.
2. Worn or torn drain O-ring allowing wash water to drain.
3. Loss of water pressure due to pump obstruction.
Disconnect electrical power supply (both dishwasher and
booster if applicable) and drain tank.
Check for any obstruction at the pump intake.
4. Incorrect water temperature. Contact Service for adjustment or repair.
5. Incorrect detergent dispensing. Contact your detergent representative.
6. Excessive mineral deposits throughout wash and rinse system. Deliming may be
necessary, refer to page 18.
7. Check wash and rinse arms to make sure they rotate properly.
8. Strainers clogged causing inadequate water supply to pump; clean machine accord-
ing to Cleaning, page 17.
9. Obstruction in wash arms or wash arms will not turn; clean machine according to
Cleaning, page 17.
10. Detergent dispenser may be clogged.
11. Excessive soil quantity; scrape dishes before cycle.
12. Improper rack loading; refer to Preparation and Dishwashing, pages 15 & 16.
13. Incoming water supply turned off.
Spotting silverware,
glasses and dishes.
1. Improperly loaded racks.
2. Incorrect rinse water temperature or rinse pressure.
3. Loss of water pressure due to pump obstruction.
Disconnect electrical power supply (both dishwasher and
booster if applicable) and drain tank.
Check for any obstruction at the pump intake.
4. Excessively hard water.
5. Incorrect detergent for water type.
6. Incorrect rinse additive for water type.
7. Incorrect concentration of detergent, rinse additive and/or sanitizer.
8. Excessive soil quantity; scrape dishes before cycle.
Inadequate rinse
or rinse water
temperature too low.
Possible EE display.
1. Dirty line strainer causing reduced water flow. Turn off water supply, remove
strainer cap, withdraw and clean screen. Reassemble.
2. Low supply line pressure.
3. Excessive mineral deposits throughout wash and rinse system. Deliming may be
necessary, refer to page 18.
4. Incoming water temperature to booster (if applicable) below 110°F. Machine will
automatically extend wash time until booster heats up (this applies to SD3 booster
equipped machines only).
5. If EE displays: Booster did not reach temperature within 8 minutes after initial fill.
Press OFF, wait 5 seconds and press ON. May be booster heater failure.
