Chapter 3. Function [1] Function - Bosch CLC6101i-W 50 HE Service Manual

CHAPTER 3.
FUNCTION
[1] FUNCTION
1 Restart control
Once the compressor stops operating, it will not restart for 180 sec-
onds to protect the compressor.
Therefore, if the operating compressor is shut down from the remote
control and then turned back on immediately after, the compressor
will restart after a preset delay time.
(The indoor unit will restart operation immediately after the ON
switch is operated on the remote control.)
2. Indoor unit heat exchanger freeze prevention
control
If the temperature of the indoor unit heat exchanger remains below
0°C for 4 consecutive minutes during cooling or dehumidifying oper-
ation, the compressor operation stops temporarily in order to prevent
freezing. When the temperature of the indoor unit heat exchanger
rises to 2°C or higher after about 180 seconds, the compressor re-
starts and resumes normal operation.
3. Outdoor unit overheat prevention control
During cooling operation, if the temperature of the outdoor unit
heat exchanger exceeds the outdoor unit heat exchanger overheat
prevention temperature (about 55°C), the operating frequency is de-
creased by about 4 to 15 Hz.
Then, this operation is repeated every 60 seconds until the tem-
perature of the outdoor unit heat exchanger drops to about 54°C
or lower. Once the temperature of the outdoor unit heat exchanger
drops to about 54°C or lower, the operating frequency is increased
by about 4 to 10 Hz every 60 seconds until the normal operation
condition resumes. If the temperature of the outdoor unit heat ex-
changer exceeds the outdoor unit heat exchanger overheat protec-
tion temperature for (120 sec : outdoor temperature ≥ 40°C • 60 sec
: outdoor temperature < 40°C) at minimum operating frequency, the
compressor stops operating and then restarts after about 180 sec-
onds, and the above mentioned control is repeated.
4. Compressor overheat prevention control
If the temperature of the compressor exceeds the compressor over-
heat prevention temperature (110°C), the operation frequency is
decreased by about 4 to 10 Hz.
Then, this operation is repeated every 60 seconds until the tempera-
ture of the compressor drops below the overheat protection tem-
perature (110°C). Once the temperature of the compressor drops
below the overheat protection temperature, the operating frequency
is increased by about 4 to 10 Hz every 60 seconds until the normal
operation condition resumes. If the temperature of the compressor
exceeds the overheat protection temperature for a certain time (120
sec : outdoor temperature ≥ 40°C • 60 sec : outdoor temperature <
40°C) at minimum operating frequency, the compressor stops op-
erating and then restarts after about 180 seconds, and the above
control is repeated.
5. Startup control
Climate Class 6100i / 6000i / 8100i / 8000i
6. Outdoor unit fan delay control
The compressor stops immediately after cooling or dehumidifying or
heating operation is shut down, but the outdoor unit fan continues
operation for 50 seconds.
7 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 2 hour before the set time so that
the room temperature reaches the set temperature at the set time.
8. OFF timer
The OFF timer can be activated by pressing the OFF timer button.
When the OFF timer is activated, the internal timer start to count
down the remaining time from set time. And the unit will turn off au-
tomatically when it reach to zero.
9. Power ON start
If the connecting wire HAJP is put on the PWB assembly, when the
power is supplied by turning on a circuit breaker, the air conditioner
automatically starts of operation in "AUTO". (Refer to Indoor side
PWB).
10. AUTO MODE
1) AUTO mode of remote control
(only for CLC6101i-W 50/65 HE model)
AUTO mode of AUX button
(for all models)
In the AUTO mode, the temperature setting and mode are automat-
ically selected according to the room temperature and outdoor tem-
perature when the unit is turned on.
Modes and Temperature Settings
the figures in ( ) are temperature settings
During operation, if the outdoor temperature changes, the tempera-
ture settings will automatically slide as shown in the chart.
2) AUTO mode of remote control
(only for CLC6001i-W 25/35 E model)
I
n the AUTO mode, the unit selects operating mode (Heating/Cool-
ing) according to temperature setting which set by user and room
temperature.
11. Auto restart
When power failure occurs during operation, the unit will automati-
cally restart in the same setting which were active before the power
failure.
1) Setting memorized
• Operating mode (Heat, Cool, Dry, PCI)
• Temperature adjustment (within 2℃ range) automatic operation.
• Temperature setting
• Fan setting
• Air flow direction
• Power ON/OFF
• Automatic operation mode setting
• Plasmacluster mode
• OD SILENT setting
• SPOT setting
2) Setting not memorized
• Timer setting
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