Electronic System Diagnosis - GE TFK Series Technician Manual

1997 REFRIGERATORS
SxS
Current Sensors - electronic models
The icemaker and defrost current sensors are
integral components of the cabinet wiring
harness. Both sensors are located above the
evaporator at the rear of the freezer liner.
The icemaker current sensor consists of a
small transformer that has primary and
secondary windings. The primary winding is
connected to brown wires, in series with the
icemaker.
The defrost current sensor consists of a
small bobbin (coil of wire) placed over the
blue wire to the defrost heaters.

ELECTRONIC SYSTEM DIAGNOSIS

Any visual or audible response from the control console is an indication that the transformer and a major
portion of the power module are functioning. If the power module relays can be heard opening and
closing, as the water and ice pads are touched, this indicates the relay coils are being energized.
Resistance/Voltage Measurements
Resistance and voltage measurements
can be conveniently made at the control
console by removing the control console
and disconnecting the wiring harness
connectors. Resistance measurements
can be made of all of the sensors from
the P1 (4-wire) connector. Also, voltage
measurements can be made from the
P2 (8-wire) connector to verify the
power supply and relay drive voltages
from the power module assembly. Use
meter lead probes that have a needle
point. Refer to the Mini-Manual for the
proper voltage and resistance
measurements of a particular model.
System Check/Reset
Observe diagnostic code sequence FF,
PF, CI, dE and simultaneous NORMAL
•
"NORMAL" remains lit- if no fault detected
•
Diagnostic code displayed- if fault detected
© General Electric Company 1997
GLOBAL NEW GENERATION
SYSTEM CHECK/RESET
28
TOUCH: