20
3.2 TROUBLESHOOTING GUIDE
In general, possible trouble is classified in three kinds. One is called Starting Failure which is caused
from an electrical defect, another is ineffective Air Conditioning caused by a defect in the refrigeration circuit
and improper application, and the other is called the Structure Damage.
ROOM AIRCONDITIONER VOLTAGE LIMITS:
MODELS NAMEPLATE
RATING
MINIMUM
MAXIMUM
FOR SINGLE-PHASE
POWER MODELS
220~240V 196V
253V
FOR THREE-PHASE
POWER MODELS
Phase voltage 380~420V
Single phase 220~240V
338V
196V
445V
253V
ROOM AIRCONDITIONER TEMPERATURE OPERATION LIMITS:
Cooling operation
Outdoor unit air temp.
℃
DB
45
40
35
30
25
20
Indoor air temp.
℃
DB 10 15 20 25 30 35 40
Note: The chart is the result from the continuous operation under constant air temperature conditions.
However, excludes the initial pull-down stage.
Heating operation
Indoor air temp.
℃
DB
30
25
20
15
10
Outdoor unit air temp.
℃
DB -5 5 15 25
Note : The chart is the result from the continuous operation under constant air temperature conditions.
However, excludes the initial pull-down stage.
DRY COOLING
