AAON RQ SERIES, Руководство пользователя

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Table 1 - Troubleshooting – Fault and Protection
NO.
Fault and
Protection
Description Check and Handling
Comms Led
Blink Code
LED604
LED603
1
Compressor
phase over-
current
Compressor phase
instant over-current
(38A/32A peak)*
Check the compressor U/V/W and the PIM module. Make
sure the circuit is not short.
Check the compressor U/V/W connection; make sure that
they are tightly connected.
1 or 3
Compressor phase
current sampling circuit
open or short
Sensor on drive not reading properly - replace the drive. 4
2
Compressor
phase current
foldback
timeout
Compressor phase
current ≥ foldback
protection value (for 30
seconds)
The compressor load is too heavy, check the compressor
load.
16
3
AC input over
current
AC current exceeds
design limits
AC input voltage too low.
The compressor load is too heavy, check the compressor
load.
11
4
AC input
current
sampling fault
AC input current
sampling circuit error
If the AC input voltage too low, replace the drive. 5
5
DC bus over
voltage
VDC exceed 800V*
VDC exceed 450V*
Check the AC power supply and if the right voltage is
supplied according to the drive model. The drive running
condition is not stable. Check the compressor load and makes
sure it is OK. Restart the drive again.
7
6
DC bus under
voltage
VDC lower than 300V*
VDC lower than 170V*
Check the AC power supply and if the right voltage is
supplied according to the drive model. The drive running
condition is not stable. Check the compressor load and makes
sure it is OK. Restart the drive again.
8
7
AC input over
voltage
VDC exceed 575V*
VDC exceed 275V* Check the AC power supply and if the right voltage is
supplied according to the drive model.
10
8
AC input
under voltage
VDC lower than 295V*
VDC lower than 170V* Check the AC power supply and if the right voltage is
supplied according to the drive model.
9
9
Power module
over temp
Power module
temperature exceeds
normal design limits
Verify proper airflow over the heat-sink of the drive. Remove
any obstructions. Check that the compressor is operating
within specified limits. Check the mounting screws on the
drive, make sure they are tight. If the problem still persists
replace the drive.
4
10
Sensor 2
(thermistor,
DLT) low temp
or open
DLT temperature
sensor circuit open
Check the DLT temperature sensor connection; make sure
that is connected and configured. If the problem persists
replace the drive.
3
11
Compressor
phase current
imbalance
Phases current
difference ≥ 4A (RMS)
for 10S
Check the compressor U/V/W connection; make sure that
they are tightly connected.
14
12
Microelectronic
fault
DSP shelf-check error
Restart the drive again, if the fault appears again, change the
drive.
13
13 EEPROM fault EERPOM invalid
Restart the drive again, if the fault appear again, change the
drive.
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