Thermador Dishwasher Troubleshooting

Thermador Dishwasher Troubleshooting

The tables below are devoted to Thermador dishwasher troubleshooting. Each of the four tables describes the problems that may arise in the operation of the dishwasher of this brand (fault codes in these models are not provided). There are both external and internal faults in the tables. You could fix the problem yourself using the table as a manual.

Thermador DW44FI Dishwasher Troubleshooting

ProblemCause Solution
Dishes do not dryRinse-aid dispenser is empty. Fill rinse-aid dispenser
Indicator lights do not illuminateA fuse may have blown or a circuit breaker tripped. Replace fuse or reset circuit breaker
Dishwasher does not startDishwasher door may not be completely shutMake certain the dishwasher door is latched
Dishwasher runs a long timeif the dishwasher completes the cycle, but seems to run for an exceptionally long time, the water supply may not be hot enoughTry opening the hot water faucet at the sink nearest the dishwasher and letting the water run until it is hot, then start the dishwasher
Machine cycle does not advance to rinsewater line is dosed or inlet filter is blockedOpen water valve and/or check the inlet filter
Water is not pumped from dishwasherthere may be a clog, kink, or other obstruction in the drain hose, the kitchen drain, or the air gap (if installed)Check the drain path. If the household plumbing is clogged, a plimber may be required
Detergent dispenser will not shuta program was not completely finished
Lower spray arm does not rotate freelyremove and clean the lower spray arm and the spray arm mount
White deposits on dishesToo little rinse aid
Streaked glasswareToo much rinse aid
Rattling noisesUtensils not properly arranged

Thermador DW244UB Dishwasher Troubleshooting

Dishes do not dryRinse aid dispenser is empty. Fill rinse aid dispenser. RINSE ONLY cycle selected in error.
Indicator light(s) do not come onA fuse may have blown or a circuit breaker tripped. Replace fuse or reset circuit breaker.
Dishwasher does not startDoor of dishwasher not properly closed. Close dishwasher making sure that door latches.
Dishwasher runs long timeIf the dishwasher completes the cycle, but the run time seem exceptionally long, it is probably due to cold incoming water. To avoid this is recommended to turn on the hot water faucet at the sink nearest the dishwasher before starting the dishwasher. Run the water until the water is hot. Then turn off the water and start the dishwasher.
Machine cyde does not advance to rinseWater line is closed or inlet filter is blocked. Open water valve and/or check inlet filter.
Water not pumped from dishwasherKink in drain hose. Filter clogged. Kitchen sink clogged. Check drain hose and fine and coarse filters.Check kitchen sink to make sure it is draining well. If problem is kitchen sink not draining you may need a plumber rather than a serviceman for the dishwasher.
Detergent dispenser lid will not closeA program was not completely finished.
Lower spray arm does not rotate freelyRemove lower spray arm and clean arm and spray arm mounts.
White deposits left on dishesToo little rinse aid. Increase dosage dispensed.
Streaks on glasswareToo much rinse aid used. Decrease dosage dispensed,
Rattling noisesUtensils not properly arranged and anchored. Rearrange load.
Suds in dishwasherIncorrect type of detergent used. Use only automatic dishwasher detergents.
Unsatisfactory washing results• Incorrect amount of detergent or rinse agent.
• Utensils incorrectly arranged or rack overloaded.
•Wash arm rotation blocked by utensils.
• Filters not properly fitted into position.
• Clogged nozzles in wash arm(s).
• Unsuitable program selected.

Thermador DWHD860RPR Dishwasher Troubleshooting

FaultCauseRemedial action
Wash cycle starts automatically.You did not wait until wash cycle ended.Perform reset.
Cover on the detergent dispenser cannot be closed.Detergent dispenser or cover guide blocked by sticky detergent residue.Remove detergent residue.
Detergent residue in the detergent dispenser 1321 or in the detergent tab tray 1241.Spray arms blocked by dishes, therefore detergent is not rinsed out.Ensure that the spray arms can rotate freely.
The detergent dispenser was damp when filled.Pour detergent into the dry detergent dispenser only.
Appliance stops in the wash cycle or wash cycle is interrupted.Door not closed properly.Close the door.
Do not place dishes or fragrance dispenser in the detergent tab tray. Upper rack presses against the door and prevents door from being closed securely.Check whether rear panel is being pressed in, e.g. by socket or by hose holder which has not been removed.
Power and/or water supply interrupted.Restore power and/or water supply.
Filling valves making striking noises.Depends on domestic installation, as appliance is not defective. No effect on appliance function.No remedial action possible.
Knocking or rattling noise.Spray arm strikes the dishes, dishes not positioned correctly.Position dishes so that the spray arms do not strike the dishes.
If there is a low load, the water jets strike the washing tank directly.Load the appliance with more dishes or distribute the dishes more evenly in the dishwasher.
Light dishes move during the wash cycle.Arrange light dishes securely.
Rust spots on the silverware.Silverware not adequately rust-resistant. Knife blades are frequently more severely affected.Use corrosion-resistant silverware.
Silverware will also rust if rusting parts are rinsed at the same time (pan handles, damaged utensil baskets, etc.).Do not wash rusting parts.
Salt content in the rinsing water too high, as salt dispenser lock not fas- tened firmly or salt was spilled while being refilled.Fasten salt dispenser lock firmly or remove spilled salt.
Appliance cannot be switched on or operated.Malfunction.Disconnect appliance from the power supply; pull out the mains plug or switch off the fuse. Wait at least 5 seconds, then connect the appliance to the power supply.
Appliance does not start.Mains fuse may have been blown or circuit breaker tripped.Check mains fuse or circuit breaker.
Door may not be properly latched.Press the main power switch to turn unit on.
Unit may not be turned on.Shut door completely.
Delay start may be engaged.
Child lock is activated.Deactivate the child lock.
The door may have been closed without first selecting a cycle.Select a cycle and close the door.
Power cord not inserted.Ensure that the power cord is plugged all the way into the back of the appliance and into the socket. Check that the socket functions.
The water supply may not be connected.Check and turn on water supply.
The appliance door has not been shut properly.Close the door.
The door has been open for more than 4 seconds after pressing the START button.Press the START button again and close the appliance door within 4 seconds
White, stubborn coatings; limescale on the dishes, container or door.Detergent substances are deposited. These coatings cannot usually be removed with chemicals (appliance cleaner,...).Change detergent brand. Clean appliance mechanically.
Hardness range incorrectly set or water hardness greater than 8.9 mmol/l.Set water softening system according to instructions for use or top up salt.
3 in 1 detergent or bio/eco deter- gent not effective enough.Set water softening system according to instructions for use or use separate detergents (proprietary detergent, salt, rinse aid).
Underdosing of detergent.Increase detergent dosage or change deter- gent.
Too weak rinse cycle selected.Select a more intensive rinse cycle.
Tea or lipstick residue on the dishes.Too low rinsing temperature.Select wash cycle with higher washing tem- perature.
Too little or unsuitable detergent.Use suitable detergent at correct dosage.
Dishes precleaned too intensely; sensors therefore decide on weakDo not prerinse dishes. Remove only large food soils.
wash cycle sequence. Stubborn soiling cannot be completely removed.Increase sensitivity of the sensors. Recommended wash cycle "Regular"
Colored (blue, yellow, brown), difficult to remove to nonremovable coatings in the appliance or on stainless steel dishes.Film formation consisting of ingredients from vegetables (e.g. cabbage, celery, potatoes, noodles,...) or the tap water (e.g. manganese).Can be partly removed with machine cleaner or by mechanical cleaning. Coatings are harm- less.
Film formation caused by metallic components on silver or aluminum silverware.Can be partly removed with machine cleaner or by mechanical cleaning.
Colored (yellow, orange, brown), easily removable deposits inside the appliance (mainly in the floor area)Film formation consisting of ingredients from food soils and substances from the tap water (limescale), "soapy"Check function of the water softening system (refill with salt) or, if using combined deter- gents (tablets), activate water softening sys- tem.
Discoloration of the plastic parts inside the appliance.Plastic parts inside the appliance may become discolored during the service life of the dishwasher.Discoloration is normal and will not impair the function of the dishwasher.
Plastic parts discolored.Too low rinsing temperature.Select wash cycle with higher washing temperature.

Thermador DWHD640JFM Dishwasher Troubleshooting

ProblemCause Solution
Dishwasher does not start1. Door may not be properly latched1. Shut the door completely until you hear it click
2. Unit may not be turned on2. Press the main power switch to turn unit on
3. Unit not reset or previous cycle not completed3. reset
4. Delay start engaged4. reset
5. Interruption of electrical power supply to dishwasher or blown fuse5. Check circuit breaker
6. The door may have been closed without first selecting a cycle6. Select a cycle and close the door
7. Water supply may not be turned on7. Check and turn on water supply
Di shwasher bee pi ng (end of cycle signal)1. Default factory settings alert the customer that the cycle is complete by beeping. This feature can be deactivated if so desired1. adjust the volume or deactivate
Display does not illuminate1. A fuse may have been blown or circuit breaker tripped1. Check the fuse or circuit breaker box and replace the fuse or reset the breaker if necessary
2. Door not closed or latched2. Ensure door is properly latched and completely closed
Note: For models with controls on top of the door, the display only illuminates when the door is opened and controls are visible.
Dishwasher seems to run a long time1. Incoming water is not warm enough1. Before starting a cycle, run hot water faucet at the sink closest to the dishwasher
2. Cycle time can vary due to soil and water conditions2. Sensors in the dishwasher automatically increase the cycle time to ensure a good wash when heavy soil is detected
3. Rinse aid dispenser is empty3. Add rinse aid
4. Dishwasher connected to cold water supply4. Verify dishwasher is connected to hot water supply plumbing
Dishes are not getting clean enough1. Spray arm movement obstructed1. Ensure that spray arm movement is not blocked by hand rotating spray arms before starting cycle
2. Spray arm nozzles clogged2. Remove the spray arms and clean
3. Improper use of detergents3. Increase or decrease detergent depending on the water hardness
4. Filters could be clogged4. Clean the filters
5. Dishes are nested or loaded too close together5. Rearrange load such that water spray can reach all items in the dish- washer
6. Selected wash cycle is not suitable for food soil conditions
Dishes are not get- ting dry enough1. Rinse aid dispenser is empty1. Add rinse aid - the use of rinse aid improves drying
2. Improper loading of dishes2. Rearrange load to ensure items are not nesting
3. Selected cycle does not include drying3. Rinse cycle does not include drying
4. "Intensive Drying" is not activated4. activate "Intensive Drying"
Tub stains1. Stains on the dishwasher interior are due to water hardness1. Concentrated lemon juice can reduce the build up of hard water stains. Run a Regular cycle until it flushes and interrupt the cycle and then place an 8oz. cup of the concentrated lemon solution on the top rack and finish the cycle. This can be done periodically to avoid build up
2. Silverware in contact with tub2. Ensure that silverware does not make contact with the tub while running a cycle
Streaks on glass- ware or residue on the dishes1. Incorrect rinse aid setting1. Depending on the hardness of water, adjust the rinse aid dispenser.
Fascia panel discolored or marked1. Abrasive cleaner used1. Use mild detergents with soft damp cloth
Noise during wash cycle1. Dishes may not be arranged properly1. Water circulation sound is normal, but if you suspect items are banging into each other or into the spray arms
Detergent dispenser cover will not shut1. Improper operation of detergent cover
2. Previous cycle has not been finished or the cycle was reset or interrupted
Unable to select desired cycle1. Previous cycle has not finished