Maintenance Inspection; Overview - Daikin RZQG71L9V1 Service Manual

ESIE15-13C

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
High
Pressure
Cooling 2.62 MPa ~
3.39 MPa
Heating 2.53 MPa ~
3.27 MPa
Standard Conditions
Cooling Operation
Heating Operation
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.
Service Diagnosis
Indoor unit
Is the air filter dirty?
What about voltage and current?
Refrigerant piping
Drain piping
Low
Pressure
0.60 MPa ~
0.98 MPa
0.53 MPa ~
0.75 MPa
Transmission wiring between
indoor and outdoor units
What about switch capacity?
What about cable thickness?
To dedicated
breaker
Outdoor unit
Discharge Suction
Pipe Temperature
Temperature
60°C~100°C –2°C~10°C
60°C~100°C –6°C~2°C
Indoor
27°CDB/19°CWB
20°CDB

Maintenance Inspection

Earth
Indoor Unit: Outdoor Unit:
Temperature Temperature
Differential Differential
between Suction between Suction
Air and Air and
Discharge Air Discharge Air
8°C~18°C 7°C~12°C
14°C~30°C 2°C~6°C
Outdoor
35°CDB
7°CDB/6°CWB
97