Care and Maintenance. Thermador DWHD440MFP/08, DWHD440MFP/02, DWHD440MFP/01, Dishwasher, DWHD440MFP/07

Care and Maintenance

A regular inspection and maintenance of your machine will help to prevent faults.

This saves time and prevents future problems.

Overall condition of the machine

Never use a steam cleaner to clean your dishwasher. The manufacturer is not liable for any resulting damage.

Regularly wipe the front of the appliance with a damp cloth - water and a small amount of liquid soap is adequate. Do not use sponges as they could scratch the surfaces.

Stainless steel appliances: To prevent corrosion, do not use sponges.

Clean the outer edges of the inside door panel regularly to remove debris that may collect from normal loading. If spots begin to appear on the stainless steel, make sure the rinse agent is full and functioning properly.

Filters

The filter system consists of a coarse filter, a flat fine filter and a micro filter. The filters keep large foreign objects in the rinsing water away from the pump. Foreign objects may occasionally block the filters.

Figure 8

Check the filters for residue by:

• Unscrew the filter cylinder as illustrated in

Figure 8-9 and take out the filter system.

• Remove any residue and clean filters under running water.

• Reinstall filter system in reverse sequence and ensure that the arrow marks are facing each other after locking it into place.

Spray Arms

Check spray arms for grease and limescale deposits.

If you find such deposits:

• Fill detergent dispenser with detergent and start the appliance without utensils in the cycle with the highest rinsing temperature (see wash cycle information table).

Figure 9 appliance cleaners which are particularly suitable for use with dishwashers.

• Unscrew the spray arms and inspect as shown in Figure 10 .

Figure 10

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Waste water pump

Large food remnants in the rinsing water not retained by the filters may block the waste water pump.

Figure 11

Notice: Use caution when removing any blockage as items causing blockage may be sharp.

In this case:

• Disconnect the appliance from the power supply.

• Remove the filters.

• Scoop out standing water - use a sponge if necessary.

• Using a spoon, pry off the pump cover

(see Figure 11-12 ) until it clicks, then grip

Figure 12 the cover and pull upward until it resists and then pull forward.

• Check inner compartment and remove any foreign objects.

&OLFN

• Place cover in the original position, press down and engage.

• Reinstall filters.

Preparing your unit for vacation

Before leaving for vacation during warmer weather, besides turning off the main valve, also turn off water supply at the nearest point to the dishwasher. During colder weather, please follow the instructions for winterizing your unit below.

Winterizing your unit

If your dishwasher will be unused for an extended period of time in a location that experiences freezing temperatures (holiday home or through a vacation period), have your dishwasher winterized by an authorized professional service.

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Self Help

Dishwashers may occasionally exhibit problems that are unrelated to a malfunction of the dishwasher itself. The following information may help you with a dishwasher problem without involving a repair professional.

Problem Cause Action

Dishwasher does not start

1. Door may not be properly latched

2. Unit may not be turned on

3. Unit not reset or previous cycle not completed

4. Delay start engaged

5. Interruption of electrical power supply to dishwasher or blown fuse.

6. The door may have been closed without first selecting a cycle

7. Water supply may not be turned on

1. Shut the door completely until you hear a click

2. Press the main power switch to turn unit on

3. Instructions on how to reset in this manual

4. To reset, refer to “Delay Start” section in this manual

5. Check circuit breaker

6. Select a cycle and close the door.

7. Check and turn on water supply

Display does not illuminate

1. A fuse may have been blown or circuit breaker tripped

2. Door not closed or latched

Note: For models with controls on top of the door, the display only illuminate when the door is opened and controls are visible.

1. Check the fuse or circuit breaker box and replace the fuse or reset the breaker if necessary

2. Ensure door is properly latched and completely closed

Dishwasher seems to run a long time

1. Incoming water is not warm enough

2. Cycle time can vary due to soil and water conditions

3. Rinse aid dispenser is empty

4. Dishwasher connected to cold water supply

Note: Refer to “Wash Cycle Information” section in this manual for typical cycle lengths

1. Before starting a cycle, run hot water faucet at the sink closest to the dishwasher

2. Sensors in the dishwasher automatically increase the cycle time to ensure a good wash when heavy soil is detected

3. Add rinse aid

4. Verify dishwasher is connected to hot water supply plumbing

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Problem Cause

Dishes are not getting clean enough

1. Spray arm movement obstructed

2. Spray arm nozzles clogged

3. Improper use of detergents

4. Filters could be clogged

5. Dishes are nested or loaded too close together

6. Selected wash cycle is not suitable for food soil conditions

Streaks on glassware or residue on the dishes

1. Incorrect rinse aid setting

Dishes are not getting dry enough

1. Rinse aid dispenser is empty

2. Improper loading of dishes

Note: Plastic or Teflon do not typically dry as well as other items due to their inherent properties

Odor 1. Food debris is present at the bottom of the dishwasher

2. Food particles are present near the door seal

3. Residual water is present at the bottom of the dishwasher

4. Drain hose is obstructed

Action

1. Ensure that spray arm movement is not blocked by hand rotating spray arms before starting cycle

2. Remove the spray arms and clean according to the “Care and Maintenance” section of the manual

3. Increase or decrease detergent depending on the water hardness

(refer to Table 1)

4. Clean the filters according to the

“Care and Maintenance” section of the manual

5. Rearrange load such that water spray can reach all items in the dishwasher - see “Loading the Dishwasher” section of the manual

6. Refer to “Wash Cycle Information” section of the manual

1. Depending on the hardness of water, adjust the rinse agent dispenser. Refer to “Adding Detergent and Rinse Aid” section in the manual

1. Add rinse aid - the use of rinse agent improves drying

2. Rearrange load to ensure items are not nesting (see “Loading the

Dishwasher” section of the manual)

Note: Select models offer an extra heating option to improve drying performance.

1. Remove the filters and clean according to the “Care and Maintenance” section on of the manual

2. Refer to “Care and Maintenance” section of the manual

3. Ensure the unit has completely drained from the last cycle

4. Remove any obstructions from the drain hose by calling qualified personnel.

Note: If odor still persists, run the

Normal/Regular cycle until it flushes and interrupt the cycle and place an

8oz. cup of distilled white vinegar solution on the top rack and then finish the cycle.

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Problem Cause

Dishwasher not filling with water or

“Check water supply” display lights up

1. Restriction in the water supply system

2. Previous wash cycle was not completed

3. Delay start is active

4. Household water supply turned off

Fascia panel discolored or marked

1. Abrasive cleaner used

Water leaks 1. Suds

2. Door seal could be pulled away from track

3. Condensation vent is blocked

4. Improper installation

Tub stains 1. Stains on the dishwasher interior are due to water hardness

2. Silverware in contact with tub

Noise during wash cycle

1. Dishes may not be arranged properly

Action

1. Ensure that the water supply valve

(typically located under kitchen sink) is open and check that the water supply line has no kinks or clogs

2. Refer to the “Operating the Dishwasher” section of the manual.

3. Cancel the delay start or wait until delay start time completes

4. Turn on water supply

1. Use mild detergents with soft damp cloth

1. Wrong type of detergent results in suds and leaks - use only dishwasher detergents. If suds still persist, add one tablespoon of vegetable oil at the bottom of the dishwasher and run the desired cycle.

2. Ensure the door seal is in the track

3. Ensure that condensation vent is not blocked

4. Have proper installation verified by qualified personnel (water supply, drain system, leveling, plumbing)

1. Concentrated lemon juice can reduce the build up of hard water stains. Run Normal 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. Ensure that silverware does not make contact with the tub while running a cycle.

1. Water circulation sound is normal, but if you suspect items are banging into each other or into the spray arms, refer to the “Loading the Dishwasher” section of the manual for optimal arrangement.

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