Toshiba SUPER MMK-AP0073H (IN) Service Manual page 43

No. Item
8 Recov ery control for
cooling oil
(Refrigerant)
9 Recov ery control for
heating refrigerant
(Oil)
10 Compensation
control for short
intermittent operation
11 Elimination of
retained heat
12 HA control
13 Display of filter sign
[ ]
(Not prov ided to the
wireless type)
∗ Separately set type
TCB-AX21E2 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 receiv ed the cooling oil
(Refrigerant) recov ery signal from the outdoor unit.
1) Opens PMV of the indoor unit with a constant
opening degree.
2) Operates the indoor fan for approx. 3 minutes
during recov ery control and after finish of control.
The indoor unit which is under STOP/Thermo-OFF
status or which operates in [FAN] mode performs the
following controls when it receiv ed the heating refrigerant
(Oil) recov ery signal from the outdoor unit.
1) Opens PMV of the indoor unit with a constant
opening degree.
2) Stop the indoor fan.
1) For 3 minutes after start of operation, the operation
is forcedly continued ev en if the unit enters in
Thermo-OFF condition.
2) Howev er the thermostat is OFF giv ing prior to
COOL/HEAT selection, ready for operation and
protectiv e control.
1) When the unit stopped from [HEAT] operation, the
indoor fan operates with [L] for approx. 30 seconds.
1) ON/OFF operation is av ailable by input of HA
signal from the remote site when connected to
remote controller or the remote ON/OFF interface.
2) HA control outputs ON/OFF status to HA terminal.
3) The I/O specifications of HA conform to JEMA
standard.
1) The filter sign is displayed with LC by sending the
filter-reset signal to the remote controller when the
specified time (15 0H) elapsed as a result of integra-
tion of the operation time of the indoor fan.
2) The integrated timer is cleared when the filter-reset
signal is receiv ed from the remote controller.
In this time, if the specified time elapsed, the counted
time is reset and the LC display is deleted.
43
Remarks
• Recov ery operation is
usually performed ev ery
2 hours.
• The indoor unit which is
under thermo-OFF
(COOL) status or which
operates in [FAN] mode
stops the indoor fan and
displays [ ].
• Recov ery operation is
usually performed ev ery
1 hour.
Usually the priority is giv en
to 5 minutes at outdoor
controller side.
When using HA terminal
(CN61) for the remote ON/
OFF, a connector sold
separately is necessary.
In case of group operation,
use the connector to
connect HA terminal to
either master or follower
indoor unit.
[ FILTER] goes on.