Daikin Aurora Series, Service Manual, Page: 140 / 333

Field Setting from Outdoor Unit SiUS341802E
127 Field Settings and Test Operation
„
Next time graph shows the different steps during the power transistor check mode.
„
Switching sequence during power transistor check mode:
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
difference between UVW within 10 V. 2 LEDs (V phase) brightness reduce until OFF.
*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.
Frequency: 240 Hz
±30 sec
±3 sec
Magnectic
switch
K1M OFF
Voltage
output
UVW
±170
VAC*
Check 3 ±6 sec ±3 sec
Check 5
±60 VAC*
Check 2 Check 1
±100V
AC*
Step 2:
Mode 2-28
Set 02
Ѝ
01, then
press “Return” twice
OR press “MODE” button
Voltage
output
UVW
Check 4
Frequency: 10 Hz
Step 1:
Mode 2-28
Set 01
Ѝ 02, then
press “Return” twice
Magnectic
switch (K1M)
ON
Disconnect UVW from compressor before
performing the power transistor check.
(5) In case of RXLQ96/120TATJU
C+
C-
Opening hole
+
-
Multimeter
(3) (4)
(5)
(1) (2)
Multimeter
+
-
(White connector)
(4) In case of RXLQ72TAYDU
(2) In case of RXLQ96/120TAYDU
(3) In case of RXLQ · RXYQ-TAYCU
(1) In case of RXLQ72TATJU