I have a Bosch Dishwasher SHU5302. A year ago it just kept on running. I ran a diagnostic test and replaced the circuit board that had a burn spot. The unit washed after that but would not drain wa
I have a Bosch Dishwasher SHU5302UC/UC12. A year ago it just kept on running. I ran a diagnostic test and replaced the circuit board that had a burn spot. The unit washed after that but would not drain water. So I would use a ladel to remove the water collected in the bottom. It has been sitting about a year without use because I got sick. Today I had a repairman out. He found a kink in the water drain and stuff collected in the drain line. Some may have come from the disposal because the drain line was not raised above the disposal. He took care of that. However now the water does not come into the washer like it did before. He had to leave to do another repair. He thought the motor may be bad. I ran another diagnostic and it showed 1. This points to the aqua sensor, but I'm also reading about the water-inlet valve and float switch. My thought is that the issue may be mechanical because of the crud in the drain line. What's your suggestion? Brent, Jacksonville, FL: firstname.lastname@example.org
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Long running time on a Bosch dishwasher is almost always a blown solder joint at the heater relay on the control board. You can resolder the joint, replace the relay or replace the control. Control board part number is 00266746.
Are the instructions on how to run the diagnostic test listed in the manual? FYI, I couldn't run the test on my Bosch DW because it was just too broken. Over the years the dishwasher essentially fried its own circuit board with excessive heat, which I learned is a problem common to Bosch DW's. Bosch told me the lifespan of my model was 10 years; mine was 11 years old (but was repaired once or twice). I replaced it with a Miele; no problems yet after 4 1/2 months.
this sounds like flow sensor failure,it it fails machine will either not fill up or fill and drain without washing its a cheap part to replace and is fitted downstream of inlet valve behind l/h/s side panel either attached to inle hose or heat exchanger.
My Bosch DW SHU5302 also got stuck during a cycle and ran and ran. Turns out this is a known problem with these DW's. The problem is that a trace on the main board burns off that controls the heater. If the heater doesn't come on then the DW keeps running waiting for the water to heat up. Re-soldering this trace fixes this problem. If you get a repair guy out, he will only change the board. They are not allowed to re-solder which doesn't fix the problem for long as the same trace will burn off. Did this about 8 years ago and it is still fine.
Start with the basics: Check the status of the breaker and the electrical connections under the toe kick panel. If the unitis getting power, You may want to call the dishwasher helpline to see if it is a recalled model. A free replacement of the control panel circuit board is available for many of these, but if the power switch is the culprit, you will need to buy a replacement button. I have written a guide to help with drainage issues. The helpline number is near the top. It is here. Thanks!
Just so you know. Bosch has a 5 year warranty on any printed circuit board (excluding labor) so you pay only for labor charges. They have a 2 year warranty (again excluding labor) on the entire dishwasher. I am leaving a copy of my owners manuals warranty information I hope this helps.
Extended Limited Warranty: Bosch also provides these additional limited warranties: • 2 Year Limited Warranty: Bosch will repair or replace any component that proves to be defective in materials or workmanship (excludes labor charges). • 5 Year Limited Warranty on Electronics: Bosch will repair or replace any Bosch microprocessor or printed circuit board if it proves to be defective in materials or workmanship (excludes labor charges). • 5 Year Limited Warranty on Dish Racks: Bosch will replace the upper or lower dish rack (excluding rack components), if the rack proves defective in materials or workmanship (excludes labor charges). • Lifetime Warranty against Stainless Steel Rust Through: Bosch will replace your dishwasher with the same model or a current model that is substantially equivalent or better in functionality, if the inner liner should rust through (excludes labor charges). Bosch will replace the stainless steel door if the door should rust through (excludes labor charges). The foregoing timeline begins to run upon the date of purchase, and shall not be stalled, tolled, extended, or suspended, for any reason whatsoever. Repair/Replace as Your Exclusive Remedy: During this warranty
Sounds like the control module is out -- cost about $100 (I am on my third). I got a "lifetime" warranty when buying my second one. If you are handy, you can replace it yourself. You can call Bosch to confirm this (I did). It mounts inside the door.
If your heat cycle is not coming on, which it sounds like it is not,
then you may have a problem with the heating system. There is a well
known issue with many of the Bosch dishwashers that use the (266746)
control module. Basically, there is a relay (which is a kind of
electro-mechanical switch) that is used to turn on the built-in
heater. There is a solder joint on the main Printer Circuit Board
(PCB) that allow electricity to flow to the heater, that joint often
will melt away and burn the surrounding area of the PCB. This is most
likely a design flaw and appears to occur at about the 4-5 year mark.
One way you can test for this is to run the onboard diagnostics routine
that is programmed into the firmware of the micro-controller (brain) of
the dishwasher. The way to do so it to press and hold the (Scrub Wash
& Delicate/Econo) buttons at he same time and then press the on/off
power switch to the on position. The LED lights above both those
buttons should begin to flash, when they do, press them both again and
the diagnostics program will start. It is a multi-phase program that
will run for quite a while. Once it finishes, if it is a heating
problem, it will end with a number 2 code in the display. If this is
so, then it very well maybe the solder-joint issue on the control
module and it will need to be replaced. It runs $128.10 US directly
from www.bosch-appliances.com. Good luck.