Design And Function; Operating And Power Modules; Operating Modules; Power Modules - Bosch SHEM63W55N Repair Manual
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- Installation instructions manual (88 pages) ,
- Operating instructions manual (88 pages) ,
- Quick start and safety manual (7 pages)
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Design and function
Design and function
3.1 Operating and power modules
Dishwashers have two control modules, an operating module in the fascia (control)
panel and a power module in the base on the right side.
3.1.1 Operating modules
Operating modules provide a user interface with displays, lights and buttons / touch
pads. They control info lights and process rinse aid sensor signals.
Fig. 1: Operating module (in fascia panel)
The wire harness connected to the operating module (1) is a separate harness.
3.1.2 Power modules
Power modules control and power dishwashers, containing all operating software, self
diagnostics, error codes and power relays.
Fig. 2: Power module (in base)
Power modules (1) control BLDC (Brushless DC) heat and drain pumps, all parts (other
than info lights) and read all sensors (other than rinse aid sensors).
Although they don't read rinse aid sensors, they process the signals and direct wash
programs to default to longest times when there's no rinse aid.
2020-04-24_58300000218396_ara_en_c
3.1.3 Adding PTC to power module pc boards
Fig. 3: On-board power module PTC
Starting FD9903, power modules have an on-board PTC to measure the temperature
where power cords plug into them, as required by UL. If temperatures exceed a preset
level, the power module software ends the wash cycle and generates an
code.
Copyright by BSH Hausgeräte GmbH
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