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Self-Diagnostic Function
The control will contain diagnostic test to verify the integrity of the system.
(1)Error Code Display Pattern
1 ON LAMP: Blink
Self Diagnostic Function Description
1. Sensor Error
Open or Short circuit of Sensors (Room and Indoor Coil Sensor)
Open : Micom, Input Voltage 0~0.3V, Short: Micom, Input Voltage 4.7~5.0V
2. Compressor Error
At the start operation, the Compressor is ON and 5 Minutes later, the Temperature change value of Indoor
Coil is below +/-2°C.
• Emergency Mode Operation detect only
LED BLINK PATTERN CASE NOTE
Room Sensor open or Short • Continuously working to fix room
temperature 18°C in cooling mode.
• I/D coil sensor open or short Do not working
1 times blink
• Compressor or electrical parts Continuously working
of compressor error.
2 times blink
• Gas leak
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