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Troubleshooting
5.2.2. Alarm indication
7-Segment indication shows the following abnormalities:
Without indication
Unit does not run
With indication
Check the 7-segment
indication
Alarm Code
No.1~6 cycles
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*1 : [
] Right side Segment shows Fan No.
] Right side Segment shows Fan No.
pag. 109
SMGB0003 rev.0 - 01/2007
Check the power source
Activation of High Pressure Switch
Excessively Low Pressure
Activation of Low Pressure Protection Control
Activation of Fan Motor Internal Thermostat (Only for 70,80,140,160,210,240,280,320,350 and 400HP)
Activation of Thermal Relay for Compressor or Chattering alarm or Malfunction of Auxiliary Relay Arn
Activation of Discharge Gas Thermostat
Activation of Compressor Internal Thermostat
Excess Low Temperature of Cooler Inlet Refrigerant
Low Pressure Protection by Suction Gas Thermistor
Phase Abnormally (Only for 4 and 5 cycle unit)
Failure of Water Outlet Thermistor (Only for 2 – 5 cycle unit)
Activation of Freeze Protection Control (Only for 2 – 5 cycle unit)
Activation of Water Overheating Protection Control
Failure of Cooler Inlet Refrigerant Thermistor (Open/Short)
Failure of Discharge Gas Thermistor (Open/Short)
Failure of Thermistor set before Expansion Valve (Open / Short)
Failure of Water Outlet Thremistor at Rear Side of Water Cooler (Open / Short)
Failure of Suction Gas Thermistor (Open / Short)
Failure of Discharge Gas Pressure Sensor (Open / Short)
Failure of Suction Gas Pressure Sensor (Open / Short)
Incorrect Setting of Fan Number
No Feedback Signal from Water Pump
Fan Inverter Rotation Abnormality *
Activation of Fan Inverter Over Current Protection Control *
Fan Inverter Phase Abnormality *
Error Communication between Inverter PCB and Control or Fan Control PCB *
Inverter Power Supply Abnormality *
Phase Abnormality (Only for 1 – 3 cycle unit)
Failure of Water Inlet Thermistor (Open / Short)
Failure of Water Outlet Thermistor (Open / Short) (Only for 1 cycle unit)
Activation of Freezing Protection Control (Only for 1 cycle unit)
Activation of Water Overheating Protection Control
Failure of Ambient Temperature Thermistor (Open / Short)
Pump interlock Signal abnormality
Description of abnormality
1
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5
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