Jackson Dynatemp Series Installation, Operation And Service Manual page 33

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 POSSIBLE CAUSES
Rinse water is heated, 1. Faulty rinse heater.
but not reaching
2. Faulty temperature probe (T2- rinse
required temperature.
3. I/O Module is faulty.
Incorrect water 1. Water turned off or disconnected.
pressure displayed
2. Pressure sensor disconnected.
during Fill or Rinse
modes.
3. Pressure sensor defective.
1. Faulty wash heater.
Wash water is not
reaching required 2. Faulty temperature probe (T1).
temperature.
3. I/O Module is faulty.
Doors will not close 1. Improper spring tension.
completely.
2. Obstruction in door roller channel.
1. Wash pump seal defective.
2. Petcock or pump drain (if equipped)
Water leaks at the
wash pump.
3. Loose hoses (hose clamps) on the
1. Defective rinse solenoid.
Will not rinse during the 2. Timer Module is faulty.
cycle. 3. No incoming water pressure.
4. Machine temperatures are below
1. Machine temperatures are below
Dishes are not coming
clean.
2. No detergent or too much detergent.
3. Solid dispenser canister is empty.
07610-004-29-29-D
injector, T3-rinse tank).
not shut/tight.
wash pump.
minimum requirements.
minimum requirements.
COMMON PROBLEMS
REMEDY
1. Verify that element has very low resistance (< 20 Ω) across
terminals. If high resistance or open, replace the heater.
2. 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.
3. Verify that module is receiving power (green LEDs are on); if
so, replace it.
1. Ensure water is connected & turn on valve.
2. Verify connection to I/O Module at P9.
3. Verify output (P9, WHT wire to BLK wire) to be ~1 VDC at 10 ±
2 PSI. If not, then replace pressure sensor.
1. Verify that element has very low resistance (< 20 Ω) across
terminals. If high resistance or open, replace the heater.
2. 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.
3. Verify that module is receiving power (green LEDs are on); if
so, replace it.
1. Adjust spring tension to desired stiffness by loosening (not
removing) spring bolt nuts near bottom of machine, and
adjusting the tension. Tighten nuts back when done.
2. Remove the obstruction.
1. Replace the seal.
2. Close or tighten.
3. Tighten the hose clamps.
1. Repair or replace the rinse solenoid.
2. Verify that module is receiving power (green LEDs are on); if
so, replace it.
3. Verify 10 ± 2 PSI water pressure to the machine.
4. Verify that incoming water, rinse water, and wash water match
the required temperatures as listed on the machine data plate.
1. Verify that incoming water, rinse water, and wash water match
the required temperatures as listed on the machine data plate.
2. Adjust detergent concentration as required for the amount of
water held by the machine.
3. Replace the canister.
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