Intermittent Operation Control For Indoor Fans Of The Indoor Unit At Thermo-Off Side In Heating Operation - Toshiba RAS-M10U2MUVG-E Service Manual

7. Intermittent Operation Control for Indoor Fans of the Indoor Unit at Thermo-off Side in
Heating Operation
While heating operation is executed in two rooms, if room temperature reached the setup temperature in one
room and thermo-off occurred, the following operations start. (Refer to the figure below.)
1.The indoor unit of the room (A room) in which thermo-off did not occur starts a continuous operation with the
setup number of revolution.
2.The indoor unit of the room (B room) in which thermo-off occurred starts intermittent operation of the indoor
fan.
The indoor fan operates with number of revolution of LL. Fan-ON time is 2 minutes and Fan-OFF time is 2 to
4 minutes.
While heating operation is executed in two rooms, if room temperature reached the setup temperature in both
room had thermo-off occurred, both indoor units start intermittent operation of the indoor fan.
A room
Thermo-ON continues
0 rpm
B room thermo-ON
Thermo-OFF
Thermo-ON
0 rpm
Indoor fan: Operates with setup number of revolution
B room thermo-OFF
LL LL
Fan stop
Fan stop
T on
T on
T off
T off
– 34 –
B room thermo-ON
Operated with setup number
of revolution
LL
Fan stop
T on
T off
T on=2 min.
To < 5°C
5 ≤ To < 10
10 ≤ To
T off time
2 min.
3 min.
4 min.