8
ELECTRICAL WIRING
(Continued)
Alarm Code
Description
Check Item
C1
40
CT for Compressor1 Disconnected.
Check the Connection for CT1.
C2
CT for Compressor2 Disconnected.
Check the Connection for CT2.
C1
45
High Pressure Switch PS(H)1 Acted.
Check the Discharge Pressure for
Compressor1.(Refer to 10.Troubleshooting)
C2
High Pressure Switch PS(H)2 Acted.
Check the Discharge Pressure for
Compressor2.(Refer to 10.Troubleshooting)
C1
47
Low Pressure Switch PS(L)1 Acted.
Check the Suction Pressure for
Compressor1.(Refer to 10.Troubleshooting)
C2
Low Pressure Switch PS(L)2 Acted.
Check the Suction Pressure for
Compressor2.(Refer to 10.Troubleshooting)
F1
57
Overheat for Outdoor Fan Motor1.
(Internal thermostat for outdoor fan motor1
acted)
Check the Internal Thermostat of Outdoor Fan
Motor1.
F2
Overheat for Outdoor Fan Motor2.
(Internal thermostat for outdoor fan motor2
acted)
Check the Internal Thermostat of Outdoor Fan
Motor2.
—
93
Power Supply Interrupted Less Than 2
seconds.
Check the Main Power Supply.
—
94
Power Supply Interrupted More Than 2
seconds.
Check the Main Power Supply.
—
dd
Wrong Wiring Connection for Room
Thermostat.
Check the Connection for PCB Terminals A,
D, E, and F.
NOTE:
1) If unit is still under abnormal conditions, please contact your distributor.
Summary of Contents for RUA-NP10ATS
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