TROUBLESHOOTING SECTION
WARNING: Inspection, testing and repair of electrical equipment should only be performed by a qualified service techni- cian. Many of the tests require that the unit have power to it and live electrical components be exposed.
USE EXTREME CAUTION WHEN TESTING THE MACHINE.
Symptom | Possible Cause | Action |
|
|
|
Dishmachine fills continuously, only when | Faulty fill microswitch. | Replace microswitch. |
the power is on. |
|
|
|
|
|
| Cam timer stalled in fill position. | If cam timer is not rotating, check the |
|
| voltage to the motor. If voltage is correct, |
|
| replace timer. |
|
|
|
| Shorted out ON/FILL switch. | Check the voltage across the switch. If the |
|
| voltage is incorrect, replace the switch. |
|
|
|
| Shorted/defective liquid level control board | Check voltage going to each component |
| or probe. | and ensure they are wired correctly. If |
|
| satisfactory, replace the defective part. |
|
|
|
Dishmachine runs with the door open. | Door switch shorted out/wired incorrectly. | Check the wiring of the door switch, if |
|
| correct, replace the door switch. |
|
|
|
| Faulty wash relay (wash relay welded | Turn machine off, if wash relay doesn't |
| closed). | release, replace contactor. |
|
|
|
| Faulty control relay. | Measure the continuity between terminals # |
|
| 6 and #9. If there is no continuity, replace |
|
| the relay. |
|
|
|
Low wash water pressure. | Water level is too low. | Check to ensure that the drain stopper is in |
|
| and has an |
|
| LLC board and probe are functioning |
|
| properly. |
Pump intake strainer is clogged.
Remove and clean strainer.
13