Daikin Indoor Cooling/Heating Unit FXUQ30PVJU

Remove the connector for electronic expansion valve (X7A) from PCB

Check continuity between White and Yellow

Measure resistance value between White and Orange

Measure resistance value between White and Red

Measure resistance value between Yellow and Blue

Measure resistance value between Yellow and Brown

Sign off on the Electronic Expansion Valve Coil Check

Check for High Pressure in cooling

Check for High Pressure in heating

Check for broken wire of the relay wire (p.299)

Procedure for checking outdoor-outdoor unit transmission wiring for broken wires

Procedure for checking indoor-outdoor unit transmission wiring for broken wires

Check Fan Motor Connector (Power Supply Cable) (p.300)

Check Fan Motor Connector (Signal Cable) (p.300)

Warning: This procedure requires trained personnel with PPE!

Choose the type of vacuuming and dehydration

Vacuum pump enables vacuuming down to –100.7 kPa (–14.6 psi)?

Enter the vacuum pump run time in hours

Degree of vacuum reached –100.7 kPa (–14.6 psi) or less?

Leak tests conducted if vacuum did not reach –100.7 kPa (–14.6 psi) or less after 3 hours?

Compressor left at the degree of vacuum of –100.7 kPa (–14.6 psi) or less for a period of 1 hour or more?

Vacuum gauge reading did not rise after 1 hour?

Enter the amount of refrigerant charged

Warning: Ensure power is OFF before starting the procedure

All wiring removed from the PCB

Wait for 10 minutes before proceeding

Measurement mode for analog multimeter

Measurement in diode check mode for digital multimeter

Warning: This procedure requires trained personnel with PPE!

Compressor PI control in cooling

Low pressure protection control

Superheated degree control by indoor unit electronic expansion valve in cooling

Superheated degree control by outdoor unit electronic expansion valve in heating

Enter the high pressure reading