AH-X127E
AU-X127E
AY-X127E
AE-X127E
26
FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES
Function
NO
Description
Detection
time
Restart
condition
Restart
times
Indoor Outdoor
Operation
Self diagnostic
display
1
2
3
4
5
6
Indoor fan
lock
Indoor fan
rpm error
Indoor
freezing
guard
Indoor
overheating
control
DC
overcurrent
or overheat of
the IPM
AC
overcurrent
Compressor
lock
Stops operation if no revolution pulse
signal is input from the indoor fan motor for
one minute.
Stops operation if the revolution pulse
signal from the indoor fan indicates low
rpm (approximately 300 rpm or less).
Lowers the operating frequency if the
temperature of the indoor heat exchanger
goes below 5
°
C during cooling. Stops the
compressor if the temperature stays below
0
°
C for 4 minutes.
Lowers the operating frequency if the
temperature of the indoor heat exchanger
rises above the overheating temperature
during heating. Stops the compressor if the
temperature stays above the overheating
temperature for 1 minute at minimum
frequency.
Set values for overheating temperature
During normal operation: 51
°
C to 54
°
C
During full power operation: 54
°
C to
58
°
C
Stops the compressor if a current of
approximately 30 A or more flows in the
power transistor module. Also stops the
compressor if the temperature of the
power transistor module is exceeds 105
°
C.
Lowers the operating frequency if the
compressor AC current exceeds
Peak control level
[11.3A(heating), 10.4A(cooling)]
Stops the compressor if the current
exceeds peak control level at 40 Hz or less.
Stops the compressor if the compressor
AC current exceeds 15 A.
Stops the compressor if the compressor
AC current exceeds 4.25 A immediately
after activating the compressor (at 17 to 30
Hz).
When indoor
fan is revolving
During cooling
and dry
During heating
During
compressor
operation
During
compressor
operation
Immediately
after
compressor
activation.
Operation OFF
Automatically
restarts when the
exchange
temperature rises
above the freezing
prevention
temperature (above
2
°
C)
Automatically
restarts when the
exchange
temperature goes
below the
overheating
temperature.
Automatically
restarts after safety
time (170 seconds)
Automatically
restarts after safety
time (170 seconds)
Automatically
restarts after safety
time (170 seconds)
No limit
No limit
No limit
4 times
4 times
4 times
Yes
No
No
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Содержание AE-X127E
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