The Power Input Electronic Control (Inverter); To Check/Replace The Inverter; Vcc Control Blocl Diagram - Electrolux E23CS75DSS0 Service Manual

Section C - Electrical Components
The Power Input Electronic
Control (Inverter)
The solid state power input electronic control con-
tains:
1. Low voltage power supply.
2. EMI Filter and Voltage Suppressor Circuit.
3. AC-DC Converter
4. Three-phase Inverter Bridge
5. Serial communication.
6. Microcontroller or DSP Controller Protection.
7. Voltage Sensor
Inverter
The Inverter replaces the Solid State Relay, the
Overload Protector and the Run Capacitor. The
Inverter has 115 Volt AC current to it all the time the
refrigerator is connected to line voltage. It picks up
Double or Basic Insulated
DC Voltage output
Applicable Standards
EMI Filter and
Voltage Suppressor
Circuit
Serial
communication and
speed reference
115 Volts directly from the service cord. It receives
a 2 to 5 volt DC signal from the main control board
located under the refrigerator in the left front
opening behind the bottom grill.

To Check/Replace the Inverter

1. Use your Multimeter or a good volt meter set
on 300 volt AC to test the voltage going into
the inverter from the product service cord. Do
not disconnect the molex connector. Slide the
probes from your meter along side the wires
until you connect with the terminal itself. You
should read 115 Volt AC + or - 10%. If less
check service cord and supply voltage.
2. Set your meter to DC on a scale as close to
10 Volt as available. Do not disconnect the
molex connector. Slide the probes from your
meter along side the wires until you connect
with the terminal itself. You should read
between 2 and 5 Volt DC. If voltage is outside
the 2 to 5 Volt DC range replace the main
control board.
VCC Control Block Diagram
Low voltage power
supply
DC Voltage
AC-DC Converter
Power limit,
over-current protection
Microcontroller or DSP Controller
Protection, sensors, arithmetic,
communication ... additional functions
To electronic circuit
Three-phase
Brushless DC
Inverter Bridge
Voltage Sensor
35
3 phase
motor