49
2 When the temperature difference RT between indoor coil thermistor (main) RT12 and indoor coil thermistor (sub)
RT13 in the indoor unit is 2: or more for a fixed time at cool or dry operation, the target discharge temperature is
changed. After the temperature is changed, when temperature difference RT is 3: or more, the target temperature
is changed again. The LEV opening is controlled based on the changed target discharge temperature and the temper-
ature difference RT.
Ta (:)
more than Tb+10
Tb+5 to Tb+10
Tb+2 to Tb+5
Tb-2 to Tb+2
Tb-5 to Tb-2
Tb-10 to Tb-5
less than Tb-10
less than 2:
20
10
2
0
-2
-5
-10
NOTE : Discharge temperature : Ta, Target discharge temperature : Tb
3: or more
60
20
2
0
-2
-5
-10
RT
2: or more and less than 3:
60
20
2
0
-2
-5
-10
The target discharge temperature (Tb) is set according to the operation mode or the unit status as follows.
Tb (:)
HEAT
COOL (Normal)
COOL ( RT is less than 2:, or RT is 2:or more and less than 3:.)
COOL ( RT is 3 :or more.)
NOTE : Target discharge temperature : Tb
93
93
75
65
Operation mode
NOTE : Opening increases and decreases to be in the target discharge temperature during operation.
Opening
completely
Positioning
Power ON
Initial opening
Standard opening
Remote
controller
ON
➔
Operation
Thermostat
OFF
Standard opening
Thermostat
ON
Opening in stop
Operation
Opening in stop
Remote
controller
OFF
Opening
completely
Remote
controller
ON
➔
Positioning
Standard opening
Operation
Time
LEV opening
Initial opening
Initial opening
(2) LEV time chart
NOTE : When the discharge temperature (Ta) is 50: or less on the cool operation, or is 49: or less on heat operation,
LEV opening is set in 54 pulse.
When this state continues for 20 minutes, the compressor is stopped and restarts in 3 minutes.
When the compressor is stopped, the indoor unit indicates the abnormality of refrigerant system and stops.
(OPERATION INDICATOR lamp is 10-time flashing on and off.)
OB272-2.qxp 02.1.26 1:23 PM Page 49
To Next Page
Loading...
Need help?
General
