Daikin VRV X Series Standard Type Air Conditioner RXQ6ARY1

Warning: This check requires trained personnel with PPE!

Enter the high pressure reading

Is overload control conducted causing insufficient cooling capacity?

Enter the superheating degree of suction gas

Is the compressor lower in discharge pipe temperature despite of pressure loads?

Enter the subcooling degree of condensate

Is the subcooling degree of condensate high?

Sign off on the refrigerant overcharge check

Is the temperature setting of the remote controller at the lowest level in cooling mode or in test mode?

Is the air from indoor unit cool?

Is the air from outdoor unit warm?

Is the compressor operating (sound or vibration)?

Resistance between phases of U, V, W at the motor side connectors

Values are balanced and there is no short circuiting

Resistance between the U and V, V and W, and W and U phases of the motor connector

Each phase are balanced (within a permissible dispersion range of ±20%)

Fan Motor Connector Check (Signal Cable)

Warning: This check requires trained personnel with PPE!

CHECK 7: VRV systems refrigerant shortage diagnosis

Measure the superheating degree of suction gas

Is the compressor discharge gas temperature higher?

Does the electronic expansion valve turn open?

Does the unit not demonstrate cooling capacity?

Sign off on the refrigerant shortage check

CHECK 4: Perform the following procedures prior to check.

All wiring removed from the PCB where power transistors are mounted on

Point of Measurement and Judgment Criteria

Measurement taken after a lapse of 10 minutes or more

Measurement mode for analog multimeter