Sharp AY-ZP35PR Service Manual page 14

1.10. Peak control
If thecurrent flowingin the air/air heat pump exceeds the peak
control current (see the table below), the operation frequency is
decreased until the current value drops below the peak control
current regardless of the frequency control demand issued from
the indoor unit based on the room temperature.
Model
Cooling operation
AE-Z35PR Approx. 7.1A
AE-Z40PR Approx. 8.1A
1.11. Outdoor unit fan delay control
The compressor stops immediately after cooling, dehumidifying or
heating operation is shut down, but the outdoor unit fan continues
operation for 50 seconds before it stops.
1.12. Defrosting
1.12.1 Reverse defrosting
The defrost operation starts when the compressor operating
time exceeds 20 minutes during heating operation, as shown
below, and the outside air temperature and the outdoor unit heat
exchanger temperature meet certain conditions. When the defrost
operation starts, the indoor unit fan stops. The defrost operation
stops when the outdoor unit heat exchanger temperature rises to
about 10°C or higher or the defrosting time exceeds 10 minutes.
20 min or more 20 min or more
Start of
heating
Defrosting
operation
Max. 10 min
1.13. 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.
1.14. 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 1 hour
OFF timer later
Cooling/dehumidifying operation
0.3
Set temperature
1 hour
Activation of
later
OFF timer
Peak control current
Heating operation
Approx. 8.1A
Approx. 9.3A
20 min or more
Defrosting
Max. 10 min
O
-1 C
O
-1 C
O
-1 C
Max. Max. Timer setting
1.5 hours 2 hours reached
later later
O
0.3 C
O
0.3 C
O
C
Max. Max. Timer setting
1.5 hours 2 hours reached
later later
1.15. 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/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.
1.16. Self-diagnostic malfunction code display
1.16.1 Indoor unit
1)When a malfunction is confirmed, all relays turn off and a
flashing operation LED.timer LED.Plasamacluter LED is
displayed to indicate the type of malfunction.
When the air/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
opencircuit,and the main relay turns off after 30 seconds if the
open-circuit condition remains.In the case of a serial short-
circuit, the air/air heat pump continues operating without a
malfunction code display, and the main relay turns off after 30
seconds if the short-circuit condition remains.
The malfunction information is stored in memory, and can be
recalled later and shown on display.
2)The self-diagnostic memory can be recalled and shown on the
display by stopping the operation and holding down AUX button
for more than 5 seconds.
(For details, refer to the troubleshooting section.)
1.16.2 Outdoor unit
If a malfunction occurs, LED1 on the outdoor unit flashes in
0.2-second intervals as shown below.
(Example) Compressor high temperature abnormality
ON
OFF
1 sec 1 sec 0.6 sec
1.17. 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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AY-ZP35PR