GE PTV15SAMR, Technician Service Manual

Page: 21 / 85

Page 21
V. FUNCTIONS
5.1.4 As a reference to determine the
causes of trouble, malfunction and
phenomena are described. Refer to
the following when repairing
i. Disconnection
As off-cycle defrosting is performed,
the defrosting time is extremely
prolonged. Each time defrostihg is
started, the freezer temperature rises
and a portion of ice and stored foods
are melted.
ii. Melted thermo. fuse or opened-circuit
due to the defect of defrost thermostat
When the above mentioned trouble
occurs in cooling operation, the timer
motor does not run, defrosting will not
take place, and consequently freezing
is caused. In the above mentioned
condition, when the timer shaft is
turned by hand to defrost, the timer
motor runs during the operation time.
However, the motor stops from the-
time when the contact is changed,
and freezing causes.
Note :
As the thermo. fuse assembly is
intended to prevent dangers, do not use
it under shorted condition even for a
short period.