Daikin Indoor Cooling/Heating Unit FXMQ24PVJU

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)

Choose the type of vacuuming and dehydration

Vacuum pump connected to service ports of liquid pipe and gas pipe

Enter the vacuum level achieved after 2 hours of vacuuming

Did the vacuum level reach –100.7 kPa (–14.6 psi) or less after 2 hours?

Enter the vacuum level achieved after additional 1 hour of vacuuming

Did the vacuum level reach –100.7 kPa (–14.6 psi) or less after 3 hours?

Leak tests conducted if vacuum level 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

Did the vacuum gauge reading rise after leaving the compressor in vacuum state for 1 hour or more?

Warning: Ensure power is OFF before starting the procedure

All wiring removed from the PCB

Power supply turned OFF and 10 minutes or more have passed

Measurement mode for analog multimeter

Measurement mode for digital multimeter is diode check mode

Sign off on the power transistor check

Warning: This procedure requires trained personnel with PPE!

Enter the compressor capacity control

Low pressure protection control functional?

Hot gas bypass control functional?

Enter the superheated degree control of indoor unit electronic expansion valve

Enter the superheated degree control of outdoor unit heat exchanger