–
281
–
(14) Anomalous fan motor (FDT and FDK only)
Fan motor will be stopped with displaying “E16”, if it has detected the revolutions of 200 rpm or less continuously for 30
seconds at a rate of 4 times within 60 minutes, after starting the motor.
(15) High ceiling control [Applicable type: FDT, FDTW, FDTS, FDE and FDR]
When the indoor unit is installed at a high ceiling, the airflow volume mode control can be changed with the indoor function of
wired remote controller “High ceiling setting”.
Setting Standard (Shipping) High Ceiling 1 High Ceiling 2
Remote controller setting Hi Me Lo Hi Me Lo Hi Me Lo
Fan speed Hi Me Lo
UHi1
Hi Me UHi2
Hi Me
Note (1) It is set at Standard at the shipping from factory.
(2) At the hot start, heating thermostat OFF, or other, the indoor fan operate at the slow speed tap at each setting.
(16) Hot start
Indoor fan motor control is performed at the start of heating operation.
(a) When the temperature detected with the indoor heat exchanger sensor (Th
I-R1 or ThI-R2) drops 35°C or lower, it control
the fan with AC motor: Lo and DC motor: ULo.
(b) When the heat exchanger sensor detects 45°C or higher with the fan running at Lo/ULo, it returns to the set airflow
volume.
Set airflow volume
Lo/ULo
35°C 45°C
Heat exchanger sensor temp. (ThI-R1 or R2)
(c) On the indoor unit of which the thermostat has been turned OFF during heating operation, the fan is turned OFF if the
heat exchanger sensor temperature (Thi-R1 or Thi-R2) drops 25°C or lower.
(17) Detection room temperature compensation during heating [Applicable model: All models of the heat pump
unit]
With the standard specification, the compressor is turned ON/OFF based on the setting temperature of thermostat. However,
when the thermostat OFF is likely to occur earlier because the unit is installed in a condition that warm air tends to accumulate
near the ceiling, the setting can be changed by using the indoor function of wired remote controller “Heating room temperature
compensation”. Since the compressor is turned ON/OF at one of the setting temperature at +3, +2 or +1°C, the feeling of
heating can be improved. However, the upper limit of setting temperature is 30°C.
Operation
Setting temperature
Room temp. (deg)
–1
+1
Stop
Standard
Compressor
Operation
Setting temperature
Room temp. (deg)
+4+2
Stop
With setting at +3°C
Compressor
(18) Intake air temperature compensation
This is the function to compensate a difference between the detected temperature of the intake air temperature sensor and the
measured temperature after installation of unit.
(a) It is adjustable in the unit of 0.5°C by using the indoor function of wired remote controller “Intake air temperature
compensation”.
• +1.0°C, +1.5°C and +2.0°C • −1.0°C, −1.5°C and −2.0°C
(b) Since the compensated temperature is transmitted to the remote controller and the outdoor unit, it is controlled with the
compensated temperature.
Note (1) Compensation of detection temperature is effective for the indoor unit sensor only.
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