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Part 5: BASIC SERVICE
5.2 General Troubleshooting
In the event that your dishwasher does not perform as expected, refer to the troubleshooting guide
below. Perform the action suggested in the solution column. Contact a qualified service
technician if the solution refers to a Repair Procedure in Part 5.3.
Many conditions may be resolved by performing the seven basic checks listed below:
1. All switches are ON.
2. Drain valves closed.
3. Wash and rinse nozzles are clean.
4. Wash and rinse pipe assemblies are installed correctly.
5. Scrap screens are properly positioned.
6. Thermostat(s) are properly adjusted.
7. Detergent and rinse additive dispensers are adequately filled.
CONDITION
Machine will not start
Low or no water
Pump motor not running
Tank(s) water
temperature is low
when in use
38
CAUSE
Doors not closed ...................................
Main switch off .....................................
Door safety switch faulty ......................
Conveyor jammed .................................
Water level low in tank(s) ....................
Defective float switch ...........................
Motor overload tripped .........................
Blown fuse or circuit breaker ................
Main water supply is turned off ............
Machine not filled initially ...................
Tank drain valve(s) open ......................
Clogged line strainer .............................
Faulty manual fill valve ........................
Motor overload tripped .........................
Defective motor ....................................
Incoming water temperature .................
to machine too low
Defective thermometer ........................
Defective thermostat .............................
Steam supply shut off ...........................
Low steam pressure ..............................
Defective steam solenoid valve ............
Defective steam trap .............................
SOLUTION
Make sure doors are fully closed
Check disconnect at main panel
Check machine power switch
Refer to Repair Procedure 5.3.22
Refer to Repair Procedure 5.3.20
Check float switch(s) and fill tanks
Refer to Repair Procedure 5.3.5
Refer to Repair Procedure 5.3.24
Refer to Repair Procedure 5.3.23
Turn on main water supply
Close drains/Open manual fill valves
Close drain valve(s)
Clean strainer screen/replace strainer
Replace manual fill valve
Refer to Repair Procedure 5.3.24
Refer to Repair Procedure 5.3.14
Raise temperature to:
140 F/43-60 C
Refer to Repair Procedure 5.3.7
Refer to Repair Procedure 5.3.8
Turn on steam supply
Correct steam pressure is 15-30 PSI
Refer to Repair Procedure 5.3.4
Refer to Repair Procedure 5.3.11
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