AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
31
Function
NO
Description
Detection
time
Restart
condition
Restart
times
Indoor Outdoor
Operation
Self diagnostic
display
AC
overcurrent
Compressor
lock
Compressor
overheating
control
5
6
7
Lowers the operating frequency if the
temperature of the compressor chamber
thermistor (TH1) rises above 105
°
C.
Stops the compressor if the thermistor
stays above 104
°
C for 4 minutes, or 1
minute at minimum frequency or less.
Lowers the operating frequency if the
compressor AC current exceeds
Peak control level
[10.1/8.0A (heating), 7.5/6.15A (cooling)]
[AY-X138E/AY-X108E]
Stops the compressor if the current
exceeds peak control level at 40 Hz or less.
Stops the compressor if the compressor
AC current exceeds 15A.
During
compressor
operation
Immediately
after
compressor
activation.
During
compressor
operation
During
compressor
operation
Automatically restarts after
safety time (170 seconds)
Automatically restarts after
safety time (170 seconds)
Automatically restarts after
safety time (170 seconds)
No limit
No
No
No limit
Yes
No limit
Yes
No limit
No
No
Compressor
high
temperature
error
8
Stops the compressor if the compressor
chamber thermistor is above 114
°
C.
(Or when TH1 shorts)
During
operation
Outdoor
overheating
control
9
Automatically restarts after
safety time ( (170 seconds)
When
compressor
is activated
Outdoor
thermistor
short
10
Stops the compressor if an outdoor
thermistor (excluding TH1) shorts.
(Except for the AU-X138E, AU-X108E)
Automatically restarts after
safety time ( (170 seconds)
4 times
Yes
Yes
4 times
Yes
Yes
4 times
Yes
Yes
4 times
Yes
Yes
When
compressor
is activated
Outdoor
thermistor
short
11
Stops the compressor if the circuit of an
outdoor thermistor breaks.
(Except for the AU-X138E, AU-X108E)
Automatically restarts after
safety time ( (170 seconds)
4 times
Yes
Yes
4 times
Yes
Yes
During
compressor
operation
AC
abnormal
current error
12
Stops the compressor if if the operating
frequency is above 70 Hz and the
compressor current is below 1.1 A/0.85 A.
[AE-X138E/AE-X108E]
Automatically restarts after
safety time ( (170 seconds)
4 times
Yes
Yes
During
operation
Serial
signal error
Four-way
valve error
13
14
Restarts after reception of
serial signal.
Automatically restarts after
safety time (170sec.)
During
operation
4 minutes after
compressor
activation
Stops the compressor if the outdoor unit
does not receive a serial signal from the
indoor unit for 30 seconds.
When the rise and fall in the detected
temperature of the outdoor heat
exchanger thermistor (TH2) do not agree
with the operating cycle.
Turns the compressor relay off if the
indoor unit does not receive a serial
signal from the outdoor unit for 8 minutes.
Stops the compressor if the compressor
AC current exceeds 3.37/2.83A
[AY-X138E/AY-X108E]
immediately after activating the compressor
(at 17 to 30 Hz).
Lowers the operating frequency if the
temperature of the outdoor heat exchanger
rises above 57
°
C during cooling. Stops the
compressor if the temperature stays above
57
°
C for 4 minutes, or 1 minute at
minimum frequency or less.
Automatically restarts less
than 8 minutes after operation
stops.
Automatically restarts
when thermistor (TH1)
temperature falls below
100
°
C (approximately 30
minutes)
