-
33
-
4) Weekly timer
Each day, it is possible to set this timer's operation up to 4 times (ON time, or OFF timer).
5) Possible joint use timer operation setting combinations
Simple timer
Time OFF timer
Time ON timer
Weekly timer
Simple timer
Time OFF timer
Time ON timer
Weekly timer
(f)
Hot start (Cold draft prevention during heating)
When heating operation starts, when the thermostat is reset, during a defrosting operation or when resetting a heating opera-
tion, in order to prevent a cold draft, the indoor heat exchanger (sensed by Th
I
-R1 and R2) control the indoor fan.
Heating start thermostat judgment
Normal state, set air flow
Indoor heat exchanger (˚C)
Indoor heat exchanger (˚C)
25
35
Lo
Fan
OFF
35
Fan
Lo
Set air flow
Indoor heat exchanger (˚C)
20
30
Fan
OFF
Set air flow
Indoor heat exchanger (˚C)
40
45
Fan
Lo
(1)
Set air flow
Set air flow
Heat exchanger temperature 35˚C or above, or 7 minutes passes
Heat exchanger temperature 35˚C or above, or 7 minutes passes
Compressor ON
Defrosting ends
Thermostat ON
Thermostat OFF
Defrosting starts
Compressor OFF
Notes (1) If J2 starts, it changes from OFF to Lo for 5 minutes.
Notes
(2) During Hot Start (the compressor is operating and the indoor fan is not operating at the set air flow), Heating preparation is displayed.
(g)
FM control with the heating thermostat turned off (For cold draft prevention)
In order to prevent a cold draft while the heating thermostat is turned off, the indoor blower is controlled in response to the
temperature of the indoor heat exchanger as illustrated below. It should be noted that if jumer wire J2 (SW7-2) on the indoor
PCB is turned off, the indoor blower will stop so far as the temperature of the indoor heat exchanger is lower than 40
°
C. It
will be turned to the Lo operation 5 minutes later.
Note (1) After the thermostat is reset, it returns to the hot start
control.
(Setting air flow)
Indoor heat exchanger temperature (˚C)
40
45
Lo
Note (1)
: Possible,
: Impossible
