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Customer Questions and Answers for Heater Assembly by Bosch

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Manufacturer Part
4.89 (64)
By: Bosch
Part Number: OEM8407359
Manufacturer Part Number: 00480317

The Heater Assembly is an OEM part for Bosch dishwashers. This part heats the water during the wash cycles, ensuring that dishes are cleaned effectively and sanitized.

Causes of a bad heater assembly can include electrical issues such as short circuits, mineral buildup from hard water, or wear and tear from regular use.

Symptoms of a bad heater assembly include:

  • The dishwasher not heating water properly
  • Dishes coming out dirty or not fully sanitized
  • The dishwasher taking longer than usual to complete cycles
  • Error codes related to heating issues

This OEM Bosch part is also compatible with Thermador, Gaggenau, and some Kenmore models.

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Questions & Answers

For Bosch Heater Assembly (Part Number: OEM8407359)

1 Answer

Rafo, This issue will most likely be caused by a faulty circulation pump with the heater built in. the part number would be 12008381 and the heater is not sold separately.

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Bill for Model Number SHE46C02UC/22

This machine runs for along time. When it gets to 1 it continues to run. The dishes end up with water on them. The heat element I believe is working because of the steam that comes pouring out when door is opened. The are dry sometimes and not others. I took the front panel off looked at he circuit board, which had a bleach burn spot on it. I tried solder on it, to no avail. When I tried finding out about the problem it kept referring to heater. Maybe you could point mein the right direction. Thank you

1 Answer

Hello Bill, if you find the water is being heated then the heater assembly is likely ok, the burn on the control board is an indication of a problem with the board, part 00661682.

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N for Model Number SHU5315UC/11

My wife was running a wash cycle when she realized the dishwasher was running quite a long time. when she viewed the dishwasher she saw the display read 1 and continued to monitor it. After a while she opened the door, to see the dishes appeared to be clean. so she closed the door again pushed the start button to complete the wash cycle, and the washer started at 8, ran, and counted down to 1 once again and continued run never shutting off. She then unloaded the DW. After a few days she loaded the washer once again and started another load. when she hit the start button, it once again they cycle started at 8 and would run to 1. I pushed the wash cycle and soft scrub cycle the DW went to CL the water drained. so once off, I shut off the breaker turned it back on and restarted the washer. it went to 2hr and stayed there. I can here the DW water inlet valve open and fill DW rand for about 30min never leaving the 2HR. So after reading several online articles it appears the control module would be the culprit, but on further inspection the control board and heater module all looked in good order with no obvious signs of bad solider joints as many service men suggested was the problem. So at this time I am not sure if it is still the control board or the heater element thoughts. Any thoughts. NS

1 Answer

N, you may want to check the turbidity sensor. A lot of times this can have gunk build up on it and prevent the dishwasher from sensing that the water passing through it is clean and can cause it to wash for an excessive amount of time. Otherwise, the only other component that could cause these kinds of issues would be the control improperly cycling.

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1 Answer

Kevin, take the bottom panel off and you should find a tech sheet, it may help you confirm the heater problem.

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Alex for Model Number Bosch SHX36L05UC/21

Hello! I had a faulty heater on my bosch dishwasher. Came here to confirm and then ordered a new heater unit. Put everything back and surprised, now I have very hot water but once it filled, nothing happens. I do hear the relays clicking but no circulation pump works! I reopenned everything, checked for faulty wiring, nothing. To make sur the new part wasnt faulty i tried the old one, still no circulation and no hot water so that rules out a faulty replacement. Then all led went on and stay on! It does run the diagnostic cycle, and does the same as above: no circulation and relays clicking. Any clue or advice?

1 Answer

Alex, This issue sounds likely that the control board may be faulty or the wiring in between the board and the pump would be the issue.

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1 Answer

Bob, You will want to make sure that the water is turned on and that the hose is not clogged. Also check to make sure that you reconnected the water valve wires.

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1 Answer

James, This issue would most likely be caused by a heater assembly that is bad. You can test to make sure that the heater is good and that the thermostat check ok.

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1 Answer

Hello Doug. If the element is bad, you will just need to replace the element in the unit. Everything else should be okay in the unit.

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