Common Problems - Jackson Dynatemp Series Installation, Operation And Service Manual

TROUBLESHOOTING
WARNING! Inspection, testing, and repair of electrical equipment should only be performed by a
!
qualified service technician. Many of the tests require that the machine have power to it and live
electrical components be exposed USE EXTREME CAUTION WHEN TESTING THE MACHINE
WARNING
PROBLEM
Digital display does not
illuminate after power
button is pressed.
Machine does not fill when
machine is powered on
(door must be closed.)
Machine will not begin
wash cycle upon closing
the door.
Machine continuously
washes.
Wash or rinse heater does
not work.
Machine fills slowly and/or
the rinse is weak.
07610-004-29-29-D
POSSIBLE CAUSES
1. Service breaker tripped.
2. Machine not connected to power
source.
3. Faulty power source.
1. Tank already full.
2. Faulty rinse solenoid valve.
3. Faulty door switch.
4. Faulty float switch.
1. Wash motor faulty/damaged.
2. Wash motor contactor faulty.
3. Timer Module is faulty.
4. I/O Module is faulty.
1. Machine is in Delime mode,
which will be indicated in the
display.
2. Timer Module is faulty.
1. Faulty heater element.
2. Faulty heater contactor.
3. Faulty temperature probe (T1-
wash tank, T3-rinse tank).
1. Clogged or obstructed rinse arms.
2. Low incoming water pressure.
3. Y-strainer is clogged

COMMON PROBLEMS

REMEDY
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.
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.
1. Verify that the wash motor is receiving power; if so, replace the
motor.
2. Verify that contactor energizes; if so, then, with contactor
energized, verify continuity across poles; if contacts are open,
then replace the contactor.
3. Verify that module is receiving power (red LED is on); if so,
replace it.
4. Verify that module is receiving power (green LEDs are on); if
so, replace it.
1. Turn off Delime mode by pressing Delime key.
2. Verify that module is receiving power (green LEDs are on); if
so, replace it.
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.
1. Remove and clean the rinse arms.
2. Adjust water-pressure regulator to 10 ± 2 PSI.
3. Clean Y-strainer.
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