22
07610-004-29-29-A
COMMON PROBLEMS
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSES
REMEDY
Digital display does not
illuminate after power
button is pressed.
1. Service breaker tripped.
2. Machine not connected to power
source.
3. Faulty power source.
1. Reset breaker. If it trips, again, contact an electrician to verify
the amp draw of the machine.
2. Verify that the machine has been properly connected to the
power source.
3. Verify the wiring to the breaker switch.
Dishmachine does not fill
when unit is powered on
(door must be closed.)
1. Tank already full
2. Faulty rinse solenoid valve.
3. Faulty door switch.
4. Faulty float switch.
1. N/A
2. Repair or replace valve as required.
3. Verify the wiring of the switch; if correct, replace switch.
4. Verify the wiring of both float switches; if correct, replace
switch.
Dishmachine will not begin
wash cycle upon closing
the door.
1. IO Module is faulty.
2. Timer Module is faulty.
3. Wash motor faulty/damaged.
4. Wash motor contactor faulty.
1. Verify that module is receiving power (green LEDs are on); if
so, replace it.
2. Verify that module is receiving power (red LED is on); if so,
replace it.
3. Verify that the wash motor is receiving power; if so, replace the
motor.
4. Verify that contactor energizes; if so, then, with contactor
energized, verify continuity across poles; if contacts are open,
then replace the contactor.
Dishmachine continuously
washes.
1. Machine is in Delime mode,
which will be indicated in the
display.
2. Timer Module is faulty.
1. Turn off Delime mode by pressing Delime key.
2. Verify that module is receiving power (green LEDs are on); if
so, replace it.
Wash or rinse heater does
not work.
1. Faulty heater element.
2. Faulty heater contactor.
3. Faulty temperature probe (T1-
wash tank, T3-rinse tank).
1. Verify that element has very low resistance (< 20 Ω) across
terminals. If high resistance or open, replace the heater.
2. Verify that contactor energizes; if so, then, with contactor
energized, verify continuity across poles; if contacts are open,
then replace the contactor.
3. Measure probe’s resistance with ohmmeter, which should
be ~10 kΩ at 77°F. Replace probe is much different than this
value.
Reference: resistances at 70°F & 85°F are ~11.9 kΩ & 7.4 kΩ,
respectively.
Dishmachine fills slowly
and/or the rinse is weak.
1. Clogged or obstructed rinse arms.
2. Low incoming water pressure.
3. Y-strainer is clogged
1. Remove and clean the rinse arms.
2. Adjust water-pressure regulator to 10 PSI.
3. Clean Y-strainer.
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.
!
WARNING
