Toshiba MMK-AP0057HP-E Service Manual page 20

No. Item
8 Cooling oil
(refrigerant)
recovery control
9 Heating refriger-
ant (oil) recovery
control
10 Short intermittent
operation
compensation
control
11 Elimination of
remaining heat
12 Flap control
Outline of specifications
While the outdoor unit is recovering cooling oil (refrigerant), the
indoor units perform the following control tasks:
[common for operational (cooling thermo ON/thermo OFF/FAN),
as well as nonoperational indoor units]
(1) Open the indoor PMV to a certain degree.
(2) Engage in recovery control for a specified period of time
and return to normal cooling operation at the end of this
period upon terminating the control.
While the outdoor unit is recovering heating refrigerant (oil), the
indoor units perform the following control tasks:
(1) Open the indoor PMV to a certain degree.
(2) Control the indoor fan according to the operation mode.
[Indoor units operating in heating thermo ON/OFF state]
Let the indoor fan continue operating, but turn it off if the
temperature of the indoor heat exchanger drops.
[Indoor units operating in FAN mode]
Turn off the indoor fan and display "HEATING STANDBY
" on the remote controller.
[Non-operational indoor units]
Keep the indoor fan turned off.
(3) Terminate the recovery operation depending on the TC2
temperature reading. The timing of termination is deter-
mined by each indoor unit.
(1) For 5 minutes after the operation has started, the operation
is continued even if entering thermostat-OFF condition.
(2) However, Cooling/Heating exchange and the system
protective control precede and thermostat is OFF.
(1) When the air conditioner stops in the "HEAT" mode, drive
the indoor fan with "LOW" mode for approx. 30 seconds.
(1) Flap position setup (Wired type)
• The flap position can be set up in the following operation
range.
In cooling/dry operation
• In group operation, the flap positions can be set up
collectively or individually.
(2) Swing setup
• The swinging position can be moved in the following
operation range.
All modes
• In group operation, the swinging positions can be set up
collectively or individually.
(3) Fix set up (Wireless type)
Keep pressing or pressing briefly the FIX button to move
the flap in the desired direction.
Operating angle of flap will be different during cooling, dry
and heating operation.
(4) When the unit stops, the flap automatically closes.
(5) While the heating operation is ready, the flap automatically
moves upward.
In heating/fan operation
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FILE NO. SVM-17045
Remarks
• Recovery operation
normally takes place
roughly every 2 hours.
• The opening position of
the indoor PMV
depending on the type
and capacity of the
indoor unit.
• Recovery operation
normally takes place
roughly every hour.
• The opening position of
the indoor PMV
depending on the type
and capacity of the
indoor unit.