AAON RQ SERIES, Руководство пользователя

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15
NO.
Fault and
Protection
Description Check and Handling
Comms Led
Blink Code
LED604
LED603
14
Lost rotor
position
Compressor loss of
phase, rotor locked,
lost rotor position.
Check the compressor U/V/W connection. Check system
charge levels, if too high this problem can occur.
2
15
DC bus
voltage low
Voltage is below the
design limits.
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.
17
16
Modbus
communication
lost
The drive can't
communicate with the
system controller for
30S
Check the communication wire connection. Check the
communication parameter set is right.
11
17
Sensor 2
(thermistor,
DLT) high
temp
DLT temperature is
high
Check the DLT/scroll thermistor connection. Check the
compressor is operating within specified limits.
6
18
Power module
temp high
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.
18
19
Power module
temp foldback
timeout
Power module
temperature exceeds
normal design limits
1. Verify proper airflow over the heatsink of the drive. Remove any
obstructions.
2. Check the compressor is operating with in specified limits.
3.
If the problem still persists, replace the drive.
21
20
Sensor 1 (high
pressure switch
open)
Condensing Pressure
beyond limit, system
issue.
Check that the compressor is operating within specified limits,
could be system issue.
20
21
Sensor 1 (low
pressure) fault
For future use, not
available at this time
Condensing pressure below limit, system issue. N/A
22
Compressor
model
configuration
error
Compressor model and configuration code do not match. 22
23
High pressure
sensor type
configuration
error
Pressure sensor and configuration code do not match. 23
24
Comms
to DSP
communication
lost
COMM MCU and DSP
communication fault
1. Check mod-bus communication cable connections.
2. Check the communication parameters are set right.
3. Power cycle the drive.
4.
If problem persists, replace the drive.
8
25
Power module
temp low or
sensor open
fault
Power module
temperature sampling
circuit open or short
Check that the compressor is operating within specified limits.
If the problem still persists replace the drive.
2