20
AH-S22AW2
AH-S25AW2
Function
NO
Description
Detection
time
Restart
condition
Restart
times
Indoor Outdoor
Operation
Self diagnostic
display
8
9
10
11
12
13
14
Outdoor
heating
exchanger
overheating
control
Outdoor
thermistor
short
Outdoor
thermistor
open
AC abnormal
current error
Serial signal
error
Indoor
terminal
board thermal
fuse
operation
Outdoor
terminal
board thermal
fuse
operation
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 1 minute at 35 Hz or less.
Stops the compressor if an outdoor
thermistor (excluding TH1) shorts.
Stops the compressor if the circuit of an
outdoor thermistor breaks.
Stops the compressor if if the operating
frequency is above 85 Hz and the
compressor current is below 1.0 A.
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 outdoor unit
does not receive a serial signal from the
indoor unit for 30 seconds.
Stop operation
The reason that the fuse operation is by
connecion error at the inside of terminal
board.
Stop operation
The reason that the fuse operation is by
connecion error at the inside of terminal
board.
During
compressor
operation
When
compressor is
activated
When
compressor is
activated
During
compressor
operation
During
operation
During
operation
During
operation
During
operation
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
Exchange of
terminal board
Exchange of
terminal board
o limit
4 times
4 times
4 times
No limit
No limit
No
Yes
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
No
No
