Sharp AH-X127E Service Manual page 27

Function
NO
7 Compressor Lowers the operating frequency if the
overheating temperature of the compressor chamber
thermistor (TH1) rises above 105 ~107°C.
control
Stops the compressor if the thermistor
stays above 104 ~ 106°C for 4 minutes,
or 1 minute at minimum frequency or less.
8 Compressor Stops the compressor if the compressor
high chamber thermistor is above 114°C.
temperature (Or when TH1 shorts)
error
9 Outdoor Lowers the operating frequency if the
overheating temperature of the outdoor heat exchanger
control 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.
10 Outdoor Stops the compressor if an outdoor
thermistor thermistor (excluding TH1) shorts.
short (Except for the AU-X127E)
11 Outdoor Stops the compressor if the circuit of an
thermistor outdoor thermistor breaks.
open (Except for the AU-X127E)
12 AC abnormal Stops the compressor if if the operating
current error frequency is above 70 Hz and the
compressor current is below 1.0 A.
13 Serial signal Turns the compressor relay off if the indoor
error unit does not receive a serial signal from
the outdoor unit for 8 minutes.
Stops the compressor if the outdoor unit
does not receive a serial signal from the
indoor unit for 30 seconds.
Operation
Description
During
compressor
operation
During
operation
During
compressor
operation
When
compressor is
activated
When
compressor is
activated
During
compressor
operation
During
operation
During
operation
27
Detection Restart
time condition
Automatically
restarts after safety
time (170 seconds)
Automatically
restarts when
thermistor (TH1)
temperature falls
below 100°C
(approximately 30
minutes)
Automatically
restarts after safety
time ( (170 seconds)
Automatically
restarts after safety
time (170 seconds)
Automatically
restarts after safety
time (170 seconds)
Automatically
restarts after safety
time (170 seconds)
Automatically
restarts less than 8
minutes after
operation stops
Restarts after
reception of serial
signal
AH-X127E
AU-X127E
AY-X127E
AE-X127E
Self diagnostic
display
Restart Indoor Outdoor
times
No limit No No
4 times Yes Yes
No limit No No
4 times Yes Yes
4 times Yes Yes
4 times Yes Yes
No limit Yes
No limit Yes