GE PSI21MGM, Technical Service Manual

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Introduction
2001 Energy SxS models are being introduced in
response to the requirement for more energy-
efficient refrigerators by mid year 2001, along with
feature and operation enhancements. The primary
differences in this refrigeration system are the
adaptive defrost system (see Pub # 31-9062),
control board, software, and control systems that
operate independently in fresh food and freezer
sections. The new high-efficiency control system
has the ability to cycle components and adjust fan
speeds as required to maintain temperature-
setting ranges in fresh food and freezer sections.
Feedback systems are digital inputs and relay
outputs. Sensors (thermistors) are used to
measure temperature with communications to a
main PC board, which controls the unit
components.
The Refrigerator has touchpad controls to provide
inputs to a microprocessor. The fresh food and
freezer controls are temperature setpoint type and
have settings of 0-9 with 9 being the coldest
temperature possible. The new NO CLEAN
condenser is serviceable from the rear and is
designed to prevent the customer from having to
clean the condenser in normal usage conditions.
Sealed system operation and compressor are
functionally the same as previous models, with
some minor changes.
The Profile Perfomance and Arctica side by side
models are the models affected. These models are
available with a through-the-door chilled water and
ice dispenser, and a built-in water filter feature. On
models requiring icemaker, the newest electronic
icemaker (see Pub. # 31-9063) has been or can
be installed.
The freezer has adjustable shelves, a slide-out
Spillproof shelf, a QuickSpace shelf, and deep
door shelves, based on the model. The fresh food
section has a baking soda holder, a fruit and
vegetable drawer, drawer dividers, an adjustable
humidity drawer, and a convertible meat drawer.
The new high-efficiency refrigerator is a
combination of the most efficient refrigeration
system and the most desirable customer features
available.