Daewoo FRP-301D Series Service Manual page 14

2-4. Function of Low Ambient Temperature (RT)
INPUT
RT
A. Condition of LOW RT
- RT sensor below 20.7℃
- When the RT sensor is over 21.7℃, the system comes to be "General Operation Mode".
- When the RT sensor is between 20.7°C to 21.7°C, the system keeps the previous mode.
B. Control
- When the temp of RT sensor is between 13.8°C to 20.7°C, COMP on/off temp is 0.67°C UP
- When the temp of RT sensor is below 13.8°C, COMP ON/OFF temp is 1.0°C DOWN
2-5. Prevention of Compressor Restart
INPUT
N/A
It takes several minutes to protect Compressor:
(1) 6 minutes after Comp off
(2) 30 minutes at operation of Low RT, but 6 minutes when the doors open more than 20 seconds
2-6. Buzzer Sound
INPUT
- Forced Defrost Mode start
- Door Switch
- Initial Power Input
A. When Forced Defrost Mode start, the buzzer rings 3times.
B. After 2 seconds power's on, the buzzer rings 3 times.
C. At Short Circuit Test, the buzzer rings 1 times.
D. When door opens, the buzzer rings every 1 minute for 5 minutes.
CONTROL OBJECT
- R HTR
- COMP
CONTROL OBJECT
COMP
CONTROL OBJECT
Buzzer
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2. FUNCTIONS