Specifications

146
Outdoor unit
frequency
4-Way valve
(20S)
EEVA
EEVB
EEVC
Outdoor unit fan
Functional
components
Operation
Heating Cooling Heating
If stopped by outdoor protection function. If restarted by operation switching. If stopped by indoor unit control. If permanent stop.
Cooling
Decision frequency
0 Hz
According to Hz
OFF
ON
OFF
Fully
closed
2 minutes 55 seconds2 minutes 55 seconds
2 minutes
2 minutes
25seconds
2 minutes
2 minutes 2 minutes
55
seconds
Stopped
(0 Hz command)
All stopped Stopped
(0 Hz command)
All stopped Stopped
(0 Hz command)
Restart Stopped
(0 Hz command)
Restart
EEV
control
Fully
closed
EEV
control
2 minutes
25seconds
2 minutes
25seconds
200 Pulse
2 minutes
25seconds
200 Pulse
200 Pulse200 Pulse
200 Pulse
200 Pulse 200 Pulse 200 Pulse
55
seconds
Operated
successively
(m) Outdoor unit abnormal stop and compressor motor protection
If the air conditioner is operating at an inverter frequency 28 Hz or more and an input current of 1 A or less is detected for 30
continuous seconds or more, a abnormal stop is performed. At the same time, LED 5 on the printed circuit board for the
outdoor unit will flash 2 times at a 0.5 second interval every 8 seconds.
The unit is re-started after 3-minute's delay, however, if the re-start has been performed 3 times within 1 hour, the fifth start
cannot be performed. (The timer lamp on the indoor unit will flash 2 times.)
(n) Serial transmission abnormality protection
An abnormal stop is made if the outdoor unit does not receive serial signal commands, other than “Stop: 0 Hz,” from all the
indoor controllers continuously for 1 minute and 55 seconds when the compressor is operating at an outdoor frequency of
other than 0 Hz. At the same time, LED 5 on the printed circuit board for the outdoor unit will flash 6 times at a 0.5 second
interval every 8 seconds. (The timer lamp on the indoor unit will flash 6 times.)
The unit can be restarted if serial signal is restored and/or the 3-minute delay has finished.
(o) Stop mode : When the decision frequency is 0 Hz; during switching mode, d
uring protection function
operation.