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Alarm Code
C1
CT for Compressor1 Disconnected.
40
C2
CT for Compressor2 Disconnected.
C1
High Pressure Switch PS(H)1 Acted.
45
C2
High Pressure Switch PS(H)2 Acted.
C1
Low Pressure Switch PS(L)1 Acted.
47
C2
Low Pressure Switch PS(L)2 Acted.
Overheat for Outdoor Fan Motor1.
F1
(Internal thermostat for outdoor fan motor1
acted)
57
Overheat for Outdoor Fan Motor2.
F2
(Internal thermostat for outdoor fan motor2
acted)
Power Supply Interrupted Less Than 2
—
93
seconds.
Power Supply Interrupted More Than 2
—
94
seconds.
Wrong Wiring Connection for Room
—
dd
Thermostat.
NOTE:
1) If unit is still under abnormal conditions, please contact your distributor.
.
(Continued)
Description
ELECTRICAL WIRING
Check Item
Check the Connection for CT1.
Check the Connection for CT2.
Check the Discharge Pressure for
Compressor1.(Refer to Troubleshooting)
Check the Discharge Pressure for
Compressor2.(Refer to Troubleshooting)
Check the Suction Pressure for
Compressor1.(Refer to Troubleshooting)
Check the Suction Pressure for
Compressor2.(Refer to Troubleshooting)
Check the Internal Thermostat of Outdoor Fan
Motor1.
Check the Internal Thermostat of Outdoor Fan
Motor2.
Check the Main Power Supply.
Check the Main Power Supply.
Check the Connection for PCB Terminals
A, D, E, and F.
14
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