27
Alarm
code
Description
Alarm
type
Possible reason Action Reset
F40
Modbus communication lost in
driver
Alarm
1. Driver communication part
issues
2. Communication cable poor
connection
3. Controller communication
part issues
The compressor will be
tripped
Automatically when
communication recover &
timer delay
F41
Compressor phase over current
(intermediate)
Alarm
1. Compressor running out of
envelope
2. Driver issues
3. Compressor motor issues
4. Wrong compressor model
setting in controller
The compressor will be
tripped
Automatically after timer
delay
L38
Variable speed unit wrong
parameter configuration
LOCKOUT
1. Driver with wrong
configuration
2. Controller with wrong
configuration
The compressor will be
tripped and the unit will
be locked
Automatically when driver
and controller have the
right configuration
L39
Communication lost between
inverter & system controller
LOCKOUT
1.Poor connection between
controller & driver
2.Controller/driver issue
The compressor will be
tripped and the unit will
be locked
Automatically when
communication recover
L35 Inverter lockout LOCKOUT Inverter with lockout errors
The compressor will be
tripped and the unit will
be locked
Press “Start” >5 sec or
manually power-off and
power-on