Sharp AH-X075E - Page 28

+X07SE/X095E
XO75E/X095E
'-XO7SE/X005E
+-X075E/X095E
FUNCTION
AND
OPERATION
OF
PROTECTIVE
PROCEDURES
Operation Self diagnostic
display
Description
Detection
Restart
Restart
Outdoor
time condition times
Indoor
fan
Stops
operation
if
no
revolution
pulse
When
indoor
Operation
OFF
Yes
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).
Lowers
the
operating
frequency
if
the
During
cooling
|
Automatically
temperature
of
the
indoor
heat
exchanger
|
and
dry
restarts
when
the
exchange
temperature
rises
above
the
freezing
prevention
temperature
(above
2°C)
Automatically
No
limit
il
goes below 5°C during cooling. Stops the
restarts when the
7
compressor if the temperature stays below
exchange
;
0°C for 4 minutes.
temperature goes
Indoor
freezing
guard
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 35 Hz or less.
Set values for overheating temperature
During normal operation: 51°C to 54°C
During full power operation: 54°C to
§7°C
Indoor
During
heating
overheating
control
below the
overheating
temperature.
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.
During
compressor
operation
Automatically
restarts after safety
time (170 seconds)
DC
overcurrent
AC
overcurrent
Compressor
lock
Lowers the operating frequency if the
compressor AC current exceeds
7 A(X095E) or 6.5A(X075E).
Stops the compressor if the current
exceeds 7 A at 40 Hz or less.
Stops the compressor if the compressor
AC current exceeds 8.5 A(X095E) or
6.5A(X075E).
During
compressor
operation
Automatically
restarts after safety
time (170 seconds)
Stops the compressor if the compressor
AC current exceeds 3 A immediately after
activating the compressor (at 19 to 23 Hz).
Immediately
after
compressor
activation.
Automatically
restarts after safety
time (170 seconds)
28