– 20 –
No.
9
10
11
Item
Recovery control
for heating
refrigerant (Oil)
Compensation
control for short
intermittent
operation
Display of filter
sign [ ]
∗
Separately set
type
TCB-AX21UL
is prepared.
Outline of specifications
The indoor unit which is under STOP/Thermo-OFF
status or which operates in [FAN] mode performs the
following controls when it received the heating refriger-
ant (Oil) recovery signal from the outdoor unit.
1) Opens PMV of the indoor unit with a constant
opening degree.
2) Detects temperature of TC2 and then closes PMV.
1) For 3 minutes after start of operation, the opera-
tion is forcedly continued even if the unit enters in
Thermo-OFF condition.
2) However the thermostat is OFF giving prior to
COOL/HEAT selection, READY for operation
and protective control.
1) The filter sign is displayed with LC by sending the
filter-reset signal to the remote controller when the
specified time (2500H) elapsed as a result of
integration of the operation time of the indoor fan.
2) The integrated timer is cleared when the filter-reset
signal is received from the remote controller.
In this time, if the specified time elapsed, the counted
time is reset and the LC display is deleted.
Remarks
• The indoor unit which is
under thermo-OFF (COOL)
status or which operates in
[FAN] mode stops the indoor
fan and displays [READY ].
• Recovery operation is usually
performed every 1 hour.
(When there is even 1
indoor unit which the
thermo unit is off)
Usually the priority is given to
5 minutes at outdoor controller
side.
[ FILTER] goes on.
Filter time
2500H
