Daikin Cooling-only Outdoor Unit RKS30LVJU

Voltage between the pins 10 - 11

Hall IC generates the rotation pulse 4 times between the pins 10 -12, 10 - 13, when the fan motor is manually rotated once

Control voltage between the pins 3 - 4

Rotation command voltage between the pins 2 - 4

2 pulses are output at the pins 1 - 4 when the fan motor is rotated 1 turn by hand

When the fuse is melted, check the outdoor fan motor for proper function.

Warning: Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

Preparation: Remove the electrical box according to the “Removal of Electrical Box”.

Disconnect the connectors [S52] [S102] from the service monitor PCB

Detach the 4 clamps with pliers and remove the service monitor PCB

Remove the screws of the terminal board and the ground wire

Timer cancel button held down for 5 seconds, 00 is displayed on the temperature display screen

Press the timer cancel button repeatedly until a long beep sounds

Note: A short beep or two consecutive beeps indicate non-corresponding codes

Return to the normal mode by holding the timer cancel button down for 5 seconds

Press the 3 buttons (TEMP, TEMP, MODE) at the same time to enter the diagnosis mode

Press the [TEMP] or button and change the number until you hear the two consecutive beeps or the long beep

Measure the power supply waveform between No. 1 and No. 2 on the terminal board

Check to see if the power supply waveform is a sine wave

Check to see if there is waveform disturbance near the zero cross

Sign off on the power supply waveforms check

With the power on, operation off, and the connector connected, check the following

Output voltage of about 5 V between pins 1 and 3

Generation of 3 pulses between pins 2 and 3 when the fan motor is operating

If NG in step 1 or 2, select the defective part

If OK in both steps 1 and 2 -> Replace the PCB