Function And Operation Of Protective Procedures - Sharp AH-X08CR Service Manual

AH/AY-XO8CR
AH/AY-X10CR
AH/AY-X13CR
FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES
Self diagnostic}
display
Detection Restart Restart | Indoor| Outdoo
time condition times
Indoor fan Stops operation if no revolution pulse When indoor Operation OFF No limit | Yes | No
lock signal is input from the indoor fan motor for} fan is revolving
one minute.
Indoor fan Stops operation if the revolution pulse
rpm error signal from the indoor fan indicates low
rpm (approximately 300 rpm or less).
During cooling | Automatically No limit No
restarts when the
exchange
temperature rises
above the freezing
prevention
temperature (above
2°C)
and dry
Automatically No limit
Yes | Yes
8times
Operation
Function
Description
Indoor
freezing
guard
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.
Indoor Lowers the operating frequency if the During heating
overheating | temperature of the indoor heat exchanger restarts when the
control rises above the overheating temperature exchange
during heating. Stops the compressor if the temperature goes
temperature stays above the overheating below the
temperature for 1 minute at minimum overheating
frequency or less. temperature.
Set values for overheating temperature
During normal operation: 45°C to 54°C
During full power operation: 47°C to
58°C
DC
overcurrent
Automatically
restarts after safety
time (170 seconds)
Stops the compressor if a current of
approximately 23A or more flows in the
power transistor module.
During
compressor
operation
Yes |} Yes AC
overcurrent
Automatically 4 times
restarts after safety
time (170 seconds)
Lowers the operating frequency if the
compressor AC current exceeds
set value(s ).Show "2-2(1)AC peak control"
Stops the compressor if the current
exceeds at 40Hz or less set value(x ).
During
compressor
operation
Lowers the operating frequency if the No limit
temperature of the compressor chamber
thermistor (TH1) rises above 105°C.
Stops the compressor if the thermistor
stays above 105°C for 1 minutes at
minimum frequency or less.
During
compressor
operation
Automatically
restarts after safety
time (170 seconds)
Compressor
overheating
control
Compressor | Stops the compressor ifthe compressor | During Automatically 4 times
high chamber thermistor is above 114°C. operation restarts when
temperature | (Or when TH1 shorts) thermistor (TH1)
error temperature falls
below 100°C
(approximately 30
minutes)
| Model | AE-X08CR AE-X10CR AE-X13CR AU-X08CR AU-X10CR AU-X13CR
Set | Cool | _5.3A
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