67
Primary current protection
Secondary current protection
High-pressure protection
Defrosting in cooling
3 times
Lighting
Discharge temperature
protection
• Check refrigerant circuit and refrigerant amount.
• Refer to 12-5.' "Check of LEV".
• Refer to 12-5.) "Check of outdoor thermistors".
4 times
Lighting
Low discharge
temperature protection
• Refer to 12-5.' "Check of LEV".
• Check refrigerant circuit and refrigerant amount.
5 times
Lighting
Cooling high-pressure
protection
This symptom does not mean any abnormality
of the product, but check the following points.
• Check if indoor filters are clogged.
• Check if refrigerant is short.
• Check if indoor/outdoor unit air circulation is
short cycled.
-
-
These symptoms do not mean any abnormality
of the product, but check the following points.
• Check if indoor filters are clogged.
• Check if refrigerant is short.
• Check if indoor/outdoor unit air circulation is
short cycled.
Twice Lighting
Once Lighting
When the discharge temperature exceeds 100 during operation.
When the frequency of the compressor is kept 80Hz or more and
the discharge temperature is kept under 39 for more than 20
minutes.
When the outdoor heat exchanger temperature exceeds 58
during operation.
9 times
Lighting
Inverter check mode
Lighting
Lighting
Normal
When the unit is operated with emergency operation switch.
-
When the input current exceeds 15A.
When the current of the compressor exceeds 15A.
When the indoor gas pipe temperature exceeds 45 during heating.
When the indoor gas pipe temperature falls 3 or below during cooling.
LED1 (Red) LED2 (Yellow)
Abnormal point/Condition Correspondence
Indication
Condition
Outdoor unit
operates.
Outdoor unit
operates
No.
Symptom
20
21
22
23
24
25
26
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