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Troubleshooting - UH330B
Troubleshooting - UH330B
Condition
Cause
Solution
Dishwasher will not run.
Low or no water.
Chemicals won’t feed into
dishwasher.
Door not closed.
Main power OFF.
Dishwasher OFF.
Circuit board fuse blown.
Main water supply off.
Fill hose kinked.
Low incoming water pressure
Solenoid valve defective.
Solenoid strainer clogged.
Chemical supply low.
Supply tubing damaged.
Supply tubing kinked.
Pick-up tube clogged
Chemical circuit board fuse blown.
Pump squeeze tube defective.
Close door completely.
Check breaker on panel.
Turn dishwasher power switch ON.
Contact service agent.
Open supply valve.
Straighten fill hose.
Set flowing water pressure to 25-95 PSI.
Install repair kit or replace.
Clean strainer.
Refill chemical container.
Replace tubing.
Straighten tubing.
Clean/replace tube.
Contact service agent.
Replace squeeze tube.
Low water pressure
pumped from wash spray
arms.
Clogged scrap screen.
Clogged spray arms.
Clogged pump intake.
Clean scrap screen.
Clean spray arms.
Inspect sump and clean pump intake.
Dishwasher stays in
wash cycle.
Rinse Sentry extends wash mode
for a maximum time of 5-minutes
to allow final rinse water booster
temperature to reach 180˚F/82˚C.
Contact service agent.
Poor wash results.
Excessively hard water.
Thermistor defective.
(See chemicals won’t feed
above.)
(See low or no water above.)
Detergent injector defective.
Chemical circuit board fuse blown.
Wares incorrectly loaded.
in dishrack.
Booster high limit tripped.
Wash tank high limit tripped.
Rinse arm nozzles clogged.
Contact chemical supplier.
Replace thermistor.
(See chemicals won’t feed
above.)
(See low or no water above.)
Replace squeeze tube.
Replace injector motor.
Clean tubing and pick-up.
Contact service agent.
Reposition wares or reduce amount of
wares in dish racks.
Reset or replace high limit.
Reset or replace high limit.
Clean nozzles with small paper clip.
Water has drained out of
the wash tank while the
dishwasher was idle.
Anti-siphoning loop in drain
hose has been removed.
Drain hose was extended.
Drain hose clamp is not
holding the drain hose
in proper position.
Building plumbing does not
provide correct air vent
to prevent siphoning.
Re-route drain hose.
DO NOT STRETCH HOSE
Replace/adjust hose clamp
making sure goose-neck
is maintained.
Contact service Agent
and/or plumber.
Summary of Contents for UH130 M4
Page 68: ...58 Timer Board Connection Diagram All Models ...
Page 74: ...64 Blank Page This Page Intentionally Left Blank ...
Page 104: ...94 Blank Page This Page Intentionally Left Blank ...
Page 106: ...96 Wash Pump Motor Assembly All Models 1 11 12 2 3 4 5 7 8 9 10 6 13 14 15 ...
Page 111: ...101 Blank Page This Page Intentionally Left Blank ...
Page 114: ...104 Fill Solenoid Valve UH130 UH130B UH330B UL130 1 2 3 4 9 5 6 7 8 ...
Page 134: ...124 Booster Assembly UH130B UH230B 1 1 2 2 3 4 1 6 5 7 8 9 10 11 12 13 4 15 14 ...
Page 144: ...134 Control Panel UH130 UH130B 1 2 3 6 7 10 8 8 9 9 11 10 4 5 5 ...
Page 146: ...136 Control Panel UH230 UH230B 1 2 3 3 2 6 5 7 5 10 8 8 9 9 11 10 4 ...
Page 148: ...138 Control Panel UH330B 1 2 2 3 6 5 7 5 10 8 8 9 9 11 10 4 ...
Page 150: ...140 Control Panel UL130 7 9 8 3 6 1 2 4 4 10 7 5 5 3 Thermometer probe located in wash tank ...
Page 152: ...142 Panels UH130 UH130B UH230 UH230B UL130 1 10 2 3 4 6 5 7 8 9 11 12 13 13 ...
Page 154: ...144 Panels UH330B 1 3 4 2 5 6 7 9 8 ...
Page 156: ...146 Door Assembly All Models 1 10 4 5 6 6 7 7 9 9 8 10 2 3 3 5 ...
Page 158: ...148 Dish Racks Line Strainer PRV 1 2 3 4 ...
Page 160: ...150 This Page Intentionally Left Blank Blank Page ...
Page 162: ...152 Electrical Schematic UL130 UL130 ...
Page 164: ...154 Electrical Schematic UH330B UH330B ...
Page 165: ...155 Timing Charts UH130 UH130B UH230 UH230B UL130 UH230 UH230B UH130 UH130B UL130 UL130 ...
Page 166: ...156 Timing Chart UH330B UH330B Timing Charts ...