Emerson Copeland EV2 Series User Manual

6 TROUBLESHOOTING GUIDE
Item
Fault/Protection
Check and Handling
Registers
Bit
Rolling LED
Code
1
Compressor Phase
Over Current
1. Check the U/V/W connections on drive side
2. Check the compressor motor windings
3. Check the compressor is operating with in
specified limits
78
80
0
INVERTER
OVER
CURRENT
2
Torque Limit Fold
Back Timeout
1. Compressor Torque ≥ foldback protection
value (for 30 seconds).
2. Check if the compressor is operating outside
the specified speed range.
79
81
2
ENVELOPE
FOLDNACK
TIMEOUT
3
AC Input Over
Current
1. Check the line voltage is too low.
2. Check the line voltage for noise.
3. Check the compressor is operating with in
specified limits.
4. If the problem still persists, then it's possibly
a drive component issue. Replace the drive
78
80
1
AC OVER
CURRENT
4
DC Bus Over
Voltage
1. Check the DC bus voltage if it is > 850VDC
2. Check AC Power Supply
3. Check the compressor is operating with in
specified limits.
4. Restart the drive
78
80
2
DC OVER
VOLTAGE
5
DC Bus Under
Voltage
1. Check the DC bus voltage if it is < 350VDC
2. Check the compressor is operating with in
specified limits.
3. Restart the drive
78
80
3
DC UNDER
VOLTAGE
6
AC Input Over
Voltage
Check the line voltage if it is > 645VAC
78
80
4
AC OVER
VOLTAGE
7
AC Input Under
Voltage
1. Check the line voltage if it is < 500VAC
2. Check the compressor is operating with in
specified limits.
78
80
5
AC UNDER
VOLTAGE
8
AC Voltage
Imbalance
Check if all input cables are connected or any line is
missing. Checking if the voltage is below 500VAC. If
the problem persists, replace the drive
78
80
6
AC
IMBALANCE
9
Power Module Over
Temp
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.
78
80
11
INVERTER
OVER TEMP
10
IGBT Over Temp
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.
78
80
12
IGBT OVER
TEMP
11
Lost Rotor Position
1. Check the U/V/W connections on drive side &
compressor side.
2. Check the compressor motor windings
3. Check system charge levels, if too high this
problem can occur.
78
80
13
LOST ROTOR
12
Compressor Phase
Current Imbalance
82
84
0
INVERTER
CURRENT
IMBALANCE
13
Microelectronic Fault
82
84
2

Emerson Copeland EV2 Series Specifications

General

Brand	Emerson
Model	Copeland EV2 Series
Category	Controller
Language	English