Service manual

30
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 11-5.$ "Check of LEV".
• Refer to 11-5.& "Check of outdoor thermistors".
4 times
Lighting
Low discharge
temperature protection
• Refer to 11-5.$ "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
SUZ-KA60VA2.TH
OCH472A