Control Outline; Indoor Unit - Toshiba MMY-MAP0804FT8(ZG)-E Service Manual

5. CONTROL OUTLINE

5-1. Indoor Unit

Control Specifications
NO. Item
1 Upon power
supply reset
2 Operation
selection
(Note 1) Selection of cooling or heating operation is automatically carried out by the
Automatic control of cooling/heating operation
a. For selection judgment of cooling / heating, see the figure below:
b. For automatic capacity control after judgment of cooling/heating, see item 4.
c. Correction of room temperature control in heating operation, see item 3
3 Room temp.
control
AMP Air Conditioning
1. Identification of outdoor unit
When the power supply is reset, the outdoor unit is identified, and control is
redirected according to the identification result.
2. Indoor fan speed and air flow direction control availability settings
Settings such as indoor fan speed and air flow direction control availability are
replaced on the basis of EEPROM data.
3. If power supply reset is performed in the wake of a fault, the check code is cleared.
If the abnormality persists after the Start/Stop button on the remote controller is
pushed to resume operation, the check code is redisplayed on the remote
controller.
1. The operation mode changes in response to an operation selection command
issued via the remote controller.
Remote controller command
STOP
FAN
COOL
DRY
HEAT
AUTO
difference between the set temperature and the room temperature.
Ta
Cooling
(˚C)
+ 1.5
(Cool ON)
Tsc
or Tsh
(Cool OFF)
– 1.5
Heating
1. Adjustment range - remote controller temperature setting (°C)
COOL/DRY
Wired type 18~29
Wireless type 18~30
2. In heating operation, the temperature setting may be fine-tuned via the DN code "06".
SET DATA
Temperature setting adjustment
Factory default
SET DATA
2
Specification outline
Control outline
Air conditioner shutdown
Fan operation
Cooling operation
Drying operation
Heating operation
Automatic cooling/heating operation (Note 1)
If the value exceeds +1.5 against Tsh when
10 minutes passed after thermostat-OFF,
heating operation (thermo-OFF) is
exchanged to cooling operation.
Description in the parentheses is an
example of cooling ON/OFF.
If the value drops –1.5 against Tsc when
10 minutes passed after thermostat-OFF,
cooling operation (thermo-OFF) is
exchanged to heating operation.
HEAT
18~29
17~30
0 2
+0˚C +2˚C
– 73 –
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Remarks
Ts: Temperature
setting
Ta: Room temperature
Tdc: Cooling operation
Temperature setting
Tsh: Heating operation
Temperature setting
+ room temperature
control temperature
compensation
Shift in heating
suction temperature
(not applicable to
remote controller
thermo operation)
4 6
+4˚C +6˚C