Daikin Aurora Series Service Manual page 140

Field Setting from Outdoor Unit
Next time graph shows the different steps during the power transistor check mode.
Switching sequence during power transistor check mode:
Step 1:
Mode 2-28
Set 01 02, then
press "Return" twice
Check 1 Check 2
Check 1 : AC power input (connector X10A on A2P: inverter compressor) 380-415 V unbalance max.2%.
Check 2 : relay "K1M" on inverter PCB switches: check DC voltage on P&N increase to ±500 VDC.
Check 3 : DC = 1.42 x VAC power supply L1-L3: check at the points below.
Check 4 : AC UVW 10 Hz intermediate: check difference within 10 V (at fasten UVW)
Check 5 : AC UVW 240 Hz continuous output while voltage drop (discharge capacitors DC) check
*Note: Actual voltage value depends on meter characteristics
[2-29]: Capacity priority
When the night-time low noise operation is in use, performance of system might drop because airflow rate
of outdoor unit is reduced.
Default value: 0. Capacity priority cannot be used.
Field setting 1: Capacity priority can temporary cancel the night-time low noise operation. Capacity priority
can be initiated when certain operation parameters approach the safety setting:
Raise in high pressure during cooling.
Drop in low pressure during heating.
Raise of discharge pipe temperature.
Raise of inverter current.
Raise of fin temperature inverter PCB.
127
Disconnect UVW from compressor before
Voltage
output
Magnectic
UVW
switch (K1M)
ON
±100V
AC*
Check 3 ±6 sec
Voltage
output
Magnectic
UVW
switch
±170
K1M OFF
VAC*
±3 sec
(1) (2)
(5)
(3) (4)
difference between UVW within 10 V. 2 LEDs (V phase) brightness reduce until OFF.
performing the power transistor check.
Check 4
Frequency: 10 Hz
±3 sec
Check 5
Frequency: 240 Hz
±30 sec
(1) In case of RXLQ72TATJU
(2) In case of RXLQ96/120TAYDU
(3) In case of RXLQ · RXYQ-TAYCU
(4) In case of RXLQ72TAYDU
(White connector)
Multimeter
+
-
Step 2:
Mode 2-28
Set 02 01, then
press "Return" twice
OR press "MODE" button
±60 VAC*
(5) In case of RXLQ96/120TATJU
Multimeter
C+
C-
+
-
Opening hole
Field Settings and Test Operation
SiUS341802E