ESIE15-13B Maintenance Inspection
Service Diagnosis 97
1. Maintenance Inspection
1.1 Overview
When performing maintenance, you should at least perform the following inspections:
Guide Lines for Optimal Operation Condition
The operation value guide lines when operating under standard conditions by pushing the test operation
button on the remote controller are as given in the table below.
Indoor unit fan: H tap
Standard Conditions
During or after maintenance, when the power supply is turned back on, operation restarts automatically by the
“auto restart function.” Please exercise the proper caution.
High
Pressure
Low
Pressure
Discharge
Pipe
Temperature
Suction
Temperature
Indoor Unit:
Temperature
Differential
between Suction
Air and
Discharge Air
Outdoor Unit:
Temperature
Differential
between Suction
Air and
Discharge Air
Cooling 2.62 MPa ~
3.39 MPa
0.60 MPa ~
0.98 MPa
60°C~100°C –2°C~10°C 8°C~18°C 7°C~12°C
Heating 2.53 MPa ~
3.27 MPa
0.53 MPa ~
0.75 MPa
60°C~100°C –6°C~2°C 14°C~30°C 2°C~6°C
Indoor unit
Outdoor unit
Earth
Drain piping
Refrigerant piping
Is the air filter dirty?
What about switch capacity?
What about cable thickness?
What about voltage and current?
Transmission wiring between
indoor and outdoor units
To dedicated
breaker
Indoor Outdoor
Cooling Operation 27°CDB/19°CWB 35°CDB
Heating Operation 20°CDB 7°CDB/6°CWB