Panasonic CS-XE9DKE / CU-XE9DKE / CS-XE12DKE / CU-XE12DKE Service Manual ▷ View online
8.2.2. Protection Control For Cooling & Soft Dry Operation
8.2.2.1. Outdoor Air Temperature Control
The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.
8.2.2.2. Cooling Overload Control
i. Pipe temperature limitation/restriction
• Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency)
• The compressor stop if outdoor pipe temperature exceeds 62°C
• If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95: outdoor high pressure rise protection)
• The compressor stop if outdoor pipe temperature exceeds 62°C
• If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95: outdoor high pressure rise protection)
8.2.2.3. Anti-Freezing Control
1. When indoor heat exchanger temperature is lower than 2°C continuously for six minutes, compressor will stop operating.
2. Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 10°C.
3. At the same time, indoor fan speed increase +40 rpm compared to its normal operation.
4. If indoor heat exchanger temperature is higher than 10°C for five minutes, the fan speed will return to its normal operation.
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CS-XE9DKE CU-XE9DKE / CS-XE12DKE CU-XE12DKE
8.2.2.4. Anti-Dew Formation Control
Anti-Dew control is perform if the following conditions is fulfilled during cooling/dry operation.
a. Control Start Condition
1) Indoor Intake Air Temperature
24°C & above
2) Outdoor Air Temperature
Refer below
3) Remote Control Setting Temperature
16°C & above, below 30°C
4) Fan tab
Refer below
Control start after 1) ~ 4) continued for more than 1 minutes.
b. Control Contents
*
If the outdoor temperature
30°C
Me & above (include auto air flow)
XE9DK
XE12DK
0 min
T
30 min
47
67
30 min
T
90 min
39
52
90 min
T
420 min
39
52
Below Me
XE9DK
XE12DK
0 min
T
30 min
33
44
30 min
T
90 min
26
36
90 min
T
420 min
26
36
*
If the outdoor temperature
30°C
Me & above (include auto air flow)
XE9DK
XE12DK
0 min
T
30 min
47
67
30 min
T
90 min
39
52
90 min
T
420 min
39
52
Below Me
XE9DK
XE12DK
0 min
T
30 min
33
44
30 min
T
90 min
26
36
90 min
T
420 min
26
36
c. Cancellation Condition
• Perform cancellation within 420 minutes after start and return to initial control.
• When changing the remote control setting temperature or air flow setting during the Anti-Dew control operation.
• If the above starting condition is not fulfilled.
• When changing the remote control setting temperature or air flow setting during the Anti-Dew control operation.
• If the above starting condition is not fulfilled.
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CS-XE9DKE CU-XE9DKE / CS-XE12DKE CU-XE12DKE
8.2.3. Protection Control For Heating Operation
8.2.3.1.
Anti Cold Draft Control
Indoor fan speed varies in accordance to indoor heat exchanger temperature, based on type of air volume and direction, as shown
below.
below.
1. Manual Fan Speed
2. Auto Fan Speed
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CS-XE9DKE CU-XE9DKE / CS-XE12DKE CU-XE12DKE
Note:
a. UP:
• If move from Lo, the fan speed will be shifted to Maximum 1160 rpm (XE9DK), 1330 rpm (XE12DK).
• If move from Maximum, the fan speed no change.
• In up zone, 10 rpm is added for every 10s until Maximum 1160 rpm (XE9DK), 1330 rpm (XE12DK).
• If move from Maximum, the fan speed no change.
• In up zone, 10 rpm is added for every 10s until Maximum 1160 rpm (XE9DK), 1330 rpm (XE12DK).
b. DOWN:
• The fan speed will be decreased one step every 10 sec. until Minimum 840 rpm (XE9DK), 1100 rpm (XE12DK).
c.
Current Output Fixed:
• Maintain at present fan speed.
d. Instantaneous Maximum:
• Fan speed will be increased to maximum auto fan speed.
8.2.3.2. Intake Air Temperature Control
Compressor will operate at maximum of 56 Hz (XE9DK), 69 Hz (XE12DK) respectively if either one of the below conditions occur:
1. When the indoor intake air temperature is above 10°C and remote control setting fan speed is lower Me-.
2. When the indoor intake air temperature is 30°C or above.
8.2.3.3. Outdoor Air Temperature Control
The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the below figures. This
control will begin one minute after the compressor starts.
control will begin one minute after the compressor starts.
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CS-XE9DKE CU-XE9DKE / CS-XE12DKE CU-XE12DKE
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