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Samsung Electronics
As above block diagram, the commons of compressor relay(RY 08) and defrost heater relay(RY 09,
RY 01) are respectively connected to AC POWER line. If relay is not activated(OFF) contact
maintaills NC, and compressor and defrost heater are all off, activated and contact is switched on.
Then, AC POWER is supplied to compressor activated. On the contrary, if defrost heater relay
operates, defrost heater is activated. Compressor and defrost heater do not operate simultaneously
under any conditions of relay.
RELAY
Load
Comp Operation
Comp off, Defrost-Heater Off
Defrost-Heater On
Comp Off, Defrost-Heater Off
Remark
Defrost-Heater Power Off
Comp Power Off
COMP
on
on
off
off
Defrost H
off
on
on
off
1) Compressor and Defrost Heater
RY08
NC
NO
RY09
NC
NO
C
C
RY01
AC POWER
COMP
F-Defrost heater
R-Defrost heater