Technical Overview; Electronics - Fisher & Paykel SMARTDRIVE Service Manual

3

TECHNICAL OVERVIEW

This Service Manual contains information on the Product Specifications, Diagnostic Mode, Detailed
Fault Codes and the complete disassembly and assembly instructions for the washing machine.
3.1

Electronics

3.1.1 Motor Control Module
The Motor Control microprocessor performs a wide variety of tasks. Primarily it controls the
electronic switching hardware to control the three phase currents in the Smart Drive DC motor.
The micro can accurately control not only the velocity of the motor but also the acceleration. This
accurate control is required to perform all the different agitator profiles, or wash actions, that are
used for caring for clothes. The Motor Control module performs the functions of fill, wash, drain
spray rinse and spin, when commanded to by the Display.
The Motor Control module microprocessor has a wide range of control with great accuracy over
water level, fill temperature, agitate action and spin speed. Having such control insures the wash
cycle selected provides the optimum soil removal combined with appropriate gentleness for the
washing and care of the clothes load.
The Motor Control Module for this Washer is air-cooled.
This Motor Control Module is not inter-changeable with other any other Series of machine.
Identification
The Motor Control module has an identification label attached to the top of the housing stating
P9NECO (Phase 9, Conventional Pump Non Eco) and P9ECO (Phase 9, Conventional Pump Eco)
Note: When replacing a Motor Control Module ensure that the pressure tube is clear of any
water droplets before operating the machine on a fill cycle. If the bowl is full of water drain
the water then blow down the tube before reconnecting the pressure tube.
Ensure you have checked the resistance of all components going to the controller such as
pump, water valves, etc. otherwise controller will short and fail.
Motor Control Module
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