Daikin RXYQ-TA Series, Service Manual

Page: 162 / 337

Field Settings for Outdoor Unit SiUS341615E
149 Field Settings
„
Next time graph shows the different steps during the power transistor check mode.
„
Switching sequence during power transistor check mode:
[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.
Power transistor check mode RXYQ-TA
disconnect fasten U/V/W from compressor!
step1:
mode 2
code 28
set 01 02
"Return" 2x
step 2:
mode 2 - code 28
set 02 01+"Return
2x OR exit mode 2
("mode" button)
Check
1
Check
2
Check
3
Check 5
Magnet
sw.
K1M
ON
Magnet sw.
K1M OFF
Voltage
output
U-V-W
Voltage
output
U-V-W
Frequency: 10 Hz
Frequency: 240 Hz
±100
VAC
note
∗
±60 VAC
note
∗
±170
VAC
note
∗
±6 sec
±3 sec
±3 sec
±30 sec
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 connector X3A (8-12 HP), or
X5,6A (14-20 HP).
Check 4 : AC UVW 10 Hz intermediate : check difference within 10 V (at fasten U/V/W)
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
till of.
∗
note : actual voltage value depends on meter characteristics
Check 4