Jackson DynaTemp NB, Installation, Operation And Service Manual

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07610-004-29-29-D
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COMMON PROBLEMS
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSES REMEDY
Rinse water is heated,
but not reaching
required temperature.
1. Faulty rinse heater.
2. Faulty temperature probe (T2- rinse
injector, T3-rinse tank).
3. I/O Module is faulty.
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.
Incorrect water
pressure displayed
during Fill or Rinse
modes. 1. Water turned off or disconnected.
2. Pressure sensor disconnected.
3. Pressure sensor defective.
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.
Wash water is not
reaching required
temperature.
1. Faulty wash heater.
2. Faulty temperature probe (T1).
3. I/O Module is faulty.
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.
Doors will not close
completely. 1. Improper spring tension.
2. Obstruction in door roller channel.
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.
Water leaks at the
wash pump.
1. Wash pump seal defective.
2. Petcock or pump drain (if equipped)
not shut/tight.
3. Loose hoses (hose clamps) on the
wash pump.
1. Replace the seal.
2. Close or tighten.
3. Tighten the hose clamps.
Will not rinse during the
cycle.
1. Defective rinse solenoid.
2. Timer Module is faulty.
3. No incoming water pressure.
4. Machine temperatures are below
minimum requirements.
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.
Dishes are not coming
clean.
1. Machine temperatures are below
minimum requirements.
2. No detergent or too much detergent.
3. Solid dispenser canister is empty.
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.
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