User`s manual

–20–
Self diagnosis function
■ We are constantly trying to do better service to our customers by installing such judges that show abnormality of each function as follows:
◆ SRK-ZD
Outdoor heat exchanger fluid pipe
sensor error
Outdoor temperature sensor error
Trouble of outdoor unit
Over current
• Broken outdoor sensor wire, poor connector connection
• Compressor locking, open phase on compressor output,
shortcircuit on power transistor, closed service valve
Current cut
Description of trouble
Room temperature sensor error
Cause
• Broken heat exchanger sensor wire, poorconnector
connection
Indoor fan motor error
Heat exchanger sensor error
2 time flash
6 time flash
TIMER lamp ON
1 time flash
RUN lamp
2 time flash
1 time flash
TIMER lamp
2 time flash
3 time flash
1 time flash
RUN lamp keeps flashing
Over heat of compressor
Error of signal transmission
5 time flash
6 time flash
RUN lamp ON
• Broken room temperature sensor wire, poor connector connection
• Defective fan motor, poor connector connection
• Broken heat exchanger fluid pipe sensor wire, poor connector
connection
• Broken power transistor, broken compressor wire
• Broken discharge pipe sensor wire, poor connector connection
• Compressor blockage
• Overload operation, overcharge
• Gas shortage, defective discharge pipe sensor, closed control
valve
• Defective power supply, Broken signal wire, defective in/outdoor
unit boards
2 time flash
RUN lamp 2 time flash
Rotor lock
• Defective compressor
• Open phase on compressor
• Defective outdoor unit boards
4 time flash Discharge pipe sensor error • Broken discharge pipe sensor wire, poor connector connection.
Outdoor heat exchanger fluid pipe
sensor error
Outdoor temperature sensor error
• Broken outdoor sensor wire, poor connector connection
Description of trouble
Room temperature sensor error
Cause
• Broken heat exchanger sensor wire, poorconnector
connection
Indoor fan motor error
Heat exchanger sensor error
2 time flash
6 time flash
TIMER lamp ON
1 time flash
RUN lamp
2 time flash
1 time flash
TIMER lamp
RUN lamp keeps flashing
• Broken room temperature sensor wire, poor connector connection
• Defective fan motor, poor connector connection
• Broken heat exchanger fluid pipe sensor wire, poor connector
connection
4 time flash
Compressor dome sensor error.
• Broken compressor dome sensor wire, poor connector connec-
tion.
• Compressor locking, closed control valve
Current cut
1 time flash
Over heat of compressor
Error of signal transmission
5 time flash
6 time flash
RUN lamp ON
• Gas shortage, defective discharge pipe sensor, closed control
valve
• Defective power supply, Broken signal wire, defective in/outdoor
unit boards
2 time flash
• Compressor failure, overload operation
Trouble of outdoor unit
◆ SRK-HD, SRK-CD
Outdoor fan motor error
7 time flash
(20, 25, 35 type only)
• Defective fan motor, poor connector connection