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NO. Function
Operation
Description
Compressor is stopped, if the oper-
8
AC
ating frequency is above 70Hz and
abnormal
the compressor current is below
current
0.8A.
9
Serial signal
INDOOR
error
If open, while timer LED blinks, op-
eration is continued.
If short, operation is continued.
OUTDOOR
Closes the expansion valve of the
corresponding room if the outdoor
unit does not receive a serial signal
from one or more indoor unit for 30
seconds.
Compressor is stopped, if the out-
door unit does not receive a serial
signal from all indoor units.
10
Compressor is stopped, and
Miswiring
miswiring check operation ends.
check error
11 Indoor heat
Lowers the operating frequency if
the temperature of any of indoor
exchanger
overheat
heat exchanger rises high temper-
prevention
ature during heating.
Stops the compressor if the tem-
control
perature srays high for 2 minutes
at minimum frequency.
12 Power factor
Compressor stops if DC voltage
module
is 450V or higher.
(Active filter)
over voltage
error
Power factor
Compressor stops if DC voltage
13
module
is 280V or lower.
(Active filter)
low voltage
error
Power factor
14
When power source frequency
module
cannot be detemined (at startup).
(Active filter)
or when power source clock can-
not be detected for 1 continuous
clock error
second (at startup).
15 Outdoor unit
Operation stops if there is no
DC fan error
input of rotation pulse signal from
outdoor unit fan motor for 30 sec-
onds.
In the case that the feed back signal
16
DC
from the compressor is not input or
Compressor
abnormal.
rotation
error
17
Lowers the operating frequency if
IPM overheat
the temperature of IPM rises high
prevention
temperature.
control.
Stops the compressor if the tem-
IPM high
temperature
perature srays high for 2 minute
minimum frequency.
error
When thermal fuse in the outdoor
18
Thermal
terminal board blew.
fuse error
Detection time
Restarts condition Restarts
During
Automatically
starts after safety
compressor
operation
time (180 seconds)
During
Automatically
operation
starts as soon as
the serial commu-
nication becomes
possible.
Miswiring check op-
During
eration will not re-
miswiring
start automatically.
operation
During
Automatically
starts after safety
compressor
time.(180 sec.)
operation
Automatically
During
starts after safety
compressor
time.(180 sec.)
operation
Automatically
During
starts after safety
compressor
time.(180 sec.)
operation
Compressor contin-
At compressor
ues operation with-
startup,when in
out stopping.
operation.
When outdoor
Operation OFF or ON
unit fan is in
operation.
Automatically
During
starts after safety
compressor
time.(180 sec.)
operation
Automatically
During
starts after safety
compressor
time.(180 sec.)
operation
at
S
Operation OFF
3 – 2
In
Out
time
door
door
re-
4 times Yes
Yes
No limit Yes
Yes
re-
4 times Yes
Yes
re-
No limit No
No
re-
4 times Yes
Yes
re
4 times
Yes
Yes
None
Yes Yes
Yes
Yes
Yes
re-
8 times Yes
Yes
re-
No limit No
No
1 time Yes Yes
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