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12PHR-N
1.11. ON timer
The ON timer can be activated by pressing the ON timer button.
When the ON timer is activated, the operation start time is
adjusted based on fuzzy logic calculations 1 hour before the set
time so that the room temperature reaches the set temperature at
the set time.
1.12. OFF timer
The OFF timer can be activated by pressing the OFF timer button.
When the OFF timer is set, the operation stops after the set time.
When this timer is set, the compressor operating frequency lowers
for quieter operation, and the room temperature is gradually
varied after one hour (reduced 1°C three times (max. 3°C) in
heating, or increased 0.3°C three times (max. 1°C) in cooling or
dehumidifying operation) so that the room temperature remains
suitable for comfortable sleeping.
Heating operation
Set temperature
Activation of
OFF timer
1 hour
later
Max.
1.5 hours
later
Max.
2 hours
later
Timer setting
reached
1 hour
later
Max.
1.5 hours
later
Max.
2 hours
later
Timer setting
reached
Activation of
OFF timer
Set temperature
-1 C
-1 C
-1 C
0 3 C 0.3 C
0.3 C
Cooling/dehumidifying operation
1.13. Power ON start
If a jumper cable is inserted in the location marked with HAJP
on the indoor unit control printed circuit board (control PCB),
connecting the power cord to an AC outlet starts the air to air
heat pump in either cooling or heating mode, which is determined
automatically by the room temperature sensor.
When a circuit breaker is used to control the ON/OFF operation,
please insert a jumper as described above.
1.14. Self-diagnostic malfunction code display
1.14.1 Indoor unit
1) When a malfunction is confirmed, a flashing malfunction code
number is displayed to indicate the type of malfunction.
When the air to air heat pump is in non-operating condition,
holding down AUX button for more than 5 seconds activates the
malfunction code display function.
The operation continues only in the case of a serial open-circuit.
In the case of a serial short-circuit, the air to air heat pump
continues operating without a malfunction code display.
2) The content of self-diagnosis (malfunction mode) is indicated
by a flashing number.
(For details, refer to the troubleshooting section.)
1.14.2 Outdoor unit
If a malfunction occurs, LED1 on the outdoor unit flashes in
0.2-second intervals as shown below.
1 sec 1 sec 0.5 sec
ON
OFF
(Example) Compressor high temperature abnormality
1.15. Information about auto mode
In the AUTO mode, the temperature setting and mode are
automatically selected according to the room temperature and
outdoor temperature when the unit is turned on.
Modes and Temperature Settings
the figures in ( ) are temperature settings
During operation, if the outdoor temperature changes, the
temperature settings will automatically slide as shown in the chart.
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