Function And Operation Of Protective Procedures - Sharp AH-S22DP2 Service Manual

AH-S22DP2
AH-S25DP2
AH-S32DP2

FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES

Function
NO
1 Indoor fan Stops operation if no rotation pulse
lock signal is input from the indoor fan motor for
one minute.
Indoor fan Stops operation if the rotation pulse
rpm error signal from the indoor fan indicates low
rpm (approximately 300 rpm or less).
for 4 minutes.
2 Indoor Lowers the operating frequency if the
freezing temperature of the indoor heat exchanger
guard goes below 5ϒ C during cooling. Stops the
compressor if the temperature stays below
0ϒ C for 4 minutes.
3 DC Stops the compressor if a current of
overcurrent approximately 26A or more flows in the
power transistor module. Also stops the
compressor if the temperature of the
power transistor module is exceeds 105ϒ C.
4 AC Lowers the operating frequency if the
overcurrent compressor AC current exceeds
set valve( ).Show "2-2(1)AC peak control"
Stops the compressor if the current
exceeds at 40Hz or less set valve.
5 Compressor Stops the compressor if the compressor
lock AC current exceeds 2.7A immediately after
activating the compressor (in 6 seconds).
( )
S e t v a l u e
M o d e l
6 . 5 A
A U - S 2 2 D P 2
A U - S 2 5 D P 2 7 . 5 A
A U - S 3 2 D P 2 8 . 5 A
Operation
Description
When indoor
fan is rotating
During cooling
and dry
During
compressor
operation
During
compressor
operation
Immediately
after
compressor
activation.
22
Detection Restart
time condition
Operation OFF
Automatically
restarts when the
exchanger
temperature rises
above the freezing
prevention
temperature (above
2ϒ C)
Automatically
restarts after safety
time (170 seconds)
Automatically
restarts after safety
time (170 seconds)
Automatically
restarts after safety
time (170 seconds)
Self diagnostic
display
Restart Indoor Outdoor
times
No limit Yes No
No limit No No
4 times Yes Yes
4 times Yes Yes
4 times Yes Yes