TROUBLESHOOTING SECTION
WARNING: Inspection, testing and repair of electrical equipment should only be performed by a qualified service technician. 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.
Problem: Nothing on the machine operates; power switch is on and the power light is off.
1.The circuit breaker may be tripped. Reset the circuit breaker. If the breaker trips again, contact an electrician immediately to verify the machine’s amp draw and breaker size.
2.The machine may not be plugged into the wall. Plug the machine in.
3.The power cord many not be connected correctly at the terminal block. Verify and correct as required.
Problem: The machine does not fill. The power switch is on, the power light is on and the rinse/fill light is off.
1.The door is not completely closed. Close the door.
2.Faulty cam timer/cam timer microswitch. Ensure that the timer is wired correctly and that it is receiving power. If the timer is moving, replace the fill microswitch.
3.Faulty door switch. Ensure that the striker plate is activating the door switch. Check the switch wiring. If everything appears to be correct, then replace the switch.
Problem: The machine will not fill. The power switch is on, the power light is on and the rinse/fill light is on.
1.No incoming water. Ensure that water is hooked to the machine and that all service valves are open. Ensure that the water is at
20A5 PSI flow pressure.
2.Faulty rinse solenoid valve. Check the wiring of the solenoid valve. If it is correct replace the coil or valve as required.
3.Obstruction in the water line. Remove the obstruction.
Problem: Wash temperature is lower than expected.
1.Low incoming water temperature. Verify that the incoming water temperature is as indicated on the machine data plate.
2.Defective temperature gauge. Replace the gauge.
3.Faulty rinse solenoid valve. Verify that the rinse solenoid valve is working. If not, repair or replace as required.
Problem: The machine fills slowly (rinse is weak).
1.Low incoming water pressure. Verify that the incoming water is at 20A5 PSI flow pressure. If not, adjust as required.
2.Clogged or obstructed rinse tube plate. Verify that the component os free from debris and soil.
3.Clogged or obstructed incoming water line. Remove the obstruction.
Problem: The machine fills excessively.
1.Faulty rinse solenoid valve. Check the wiring of the solenoid valve. If it is correct replace the coil or valve as required.
2.Fill cam is out of adjustment. Adjust the fill cam to ensure a proper water level.
3.Incoming water pressure is too high. Verify that the incoming water is at 20A5 PSI flow pressure. If not, adjust as required.
Problem: Wash tank water level is too low.
1.Low incoming water pressure. Verify that the incoming water is at 20A5 PSI flow pressure. If not, adjust as required.
2.Fill cam is out of adjustment. Adjust the fill cam to ensure a proper water level.
3.Drain valve is leaking. Remove the drain hose to verify that the valve is not obstructed. If the valve is clear, but does not seal prop- erly, it should be replaced.
Problem: Dishes are not coming clean.
1.Low incoming water pressure. Verify that the incoming water is at 20A5 PSI flow pressure. If not, adjust as required.
2.Clogged or obstructed rinse tube plate. Verify that the component os free from debris and soil.
3.Chemicals are not being provided in the correct concentrations. Contact your chemical representative to verify chemical concentra- tions and dispenser operation.
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