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Model
CS-CE9JKE CU-CE9JKE CS-CE12JKE CU-CE12JKE
Pages
84
Size
5.8 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner / AIR CONDITIONER
File
cs-ce9jke-cu-ce9jke-cs-ce12jke-cu-ce12jke.pdf
Date

Panasonic CS-CE9JKE / CU-CE9JKE / CS-CE12JKE / CU-CE12JKE Service Manual ▷ View online

33
12.4.2.
Horizontal Airflow
• The horizontal airflow direction louvers can be adjusted manually by hand.
12.5. Timer Control
12.5.1.
ON Timer Control
• ON timer can be set using remote control, the unit with timer set will start operate earlier than the setting time. This is to provide
a comfortable environment when reaching the set ON time.
• 60 minutes before the set time, indoor (at fan speed of Lo-) and outdoor fan motor start operate for 30 seconds to determine the
indoor intake air temperature and outdoor air temperature in order to judge the operation starting time.
• From the above judgment, the decided operation will start operate earlier than the set time as shown below.
12.5.2.
OFF Timer Control
OFF timer can be set using remote control, the unit with timer set will stop operate at set time.
12.6. Auto Restart Control
1. When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four
minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after
power supply resumes.
2. This type of control is not applicable during ON/OFF Timer setting.
12.7. Indication Panel
Note:
• If POWER LED is blinking, the possible operation of the unit are Hot Start, during Deice operation, operation mode judgment, or
ON timer sampling.
• If Timer LED is blinking, there is an abnormality operation occurs.
LED
POWER
TIMER
Color
Green
Orange
Light ON
Operation ON
Timer Setting ON
Light OFF
Operation OFF
Timer Setting OFF
34
13 Protection Control
13.1. Protection Control For All Operations
13.1.1.
Restart Control (Time Delay Safety Control)
• The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by
pressing OFF/ON button at remote control within this period.
• This control is not applicable if the power supply is cut off and on again.
• This phenomenon is to balance the pressure inside the refrigerant cycle.
13.1.2.
30 Seconds Forced Operation
• Once the air conditioner is turned on, the compressor will not stop within 30 seconds in a normal operation although the intake air
temperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON button at the remote control
is permitted or the Auto OFF/ON button at indoor unit.
• The reason for the compressor to force operation for minimum 30 seconds is to allow the refrigerant oil run in a full cycle and
return back to the outdoor unit.
13.1.3.
Total Running Current Control
1. When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will be
decreased.
2. If the running current does not exceed X value for 5 seconds, the frequency instructed will be increased.
3. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for 3 minutes.
4. The first 30 minutes of cooling operation, (A) will be applied.
13.1.4.
IPM (Power transistor) Prevention Control
A. Overheating Prevention Control
1. When the IPM temperature rises to 100
°C, compressor operation will stop immediately.
2. Compressor operation restarts after 3 minutes the temperature decreases to 95
°C.
3. If this condition repeats continuously 4 times within 20 minutes, timer LED will be blinking (“F96” is indicated).
B. DC Peak Current Control
1. When electric current to IPM exceeds set value of 20.2 A, the compressor will stop operate. Then, operation will restart
after 3 minutes.
2. If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will restart after 1
minute.
3. If the set value exceeded again within 30 seconds after the compressor starts, the operation will restart after 2 minutes. If
this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off, timer LED will be blinking (“F99”
is indicated).
Model
CE9JK
CE12JK
Operation Mode
X (A)
Y (A)
X (A)
Y (A)
Cooling/Soft Dry (A)
4.95
14.98
5.76
14.98
Cooling/Soft Dry (B)
4.43
14.98
5.24
14.98
Cooling/Soft Dry (C)
4.95
14.98
5.76
14.98
Heating
6.2
14.98
8.1
14.98
35
13.1.5.
Compressor Overheating Prevention Control
• Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of
frequency are as below.
• If compressor discharge temperature exceeds 112
°C, compressor will be stopped, occurs 4 times per 20 minutes, timer LED will
be blinking. (“F97” is indicated.)
13.1.6.
Low Pressure Prevention Control (Gas Leakage Detection)
a. Control start conditions
• For 5 minutes, the compressor continuously operates and outdoor total current is between 0.6A and 1.15A.
• During Cooling and Soft Dry operations:
Indoor suction temperature - indoor piping temperature is below 4
°C.
• During Heating operations :
Indoor piping temperature - indoor suction is under 5
°C.
b. Control contents
• Compressor stops (and restart after 3 minutes).
• If the conditions above happen 2 times within 20 minutes, the unit will:
- Stop operation
- Timer LED blinks and “F91” indicated.
13.1.7.
Low Frequency Protection Control 1
• When the compressor operate at frequency lower than 25 Hz continued for 240 minutes, the operation frequency will be
changed to 24 Hz for 2 minutes.
13.1.8.
Low Frequency Protection Control 2
• When all the below conditions comply, the compressor frequency will change to lower frequency.
Temperature, T, for:
Cooling/Soft Dry
Heating
Indoor intake air (
°C)
T < 14 or T   30
T < 14 or T   28
Outdoor air (
°C)
T < 13 or T   38
T < 4 or T   24
Indoor heat exchanger (
°C)
T < 30
T  
0
36
13.2. Protection Control For Cooling & Soft Dry Operation
13.2.1.
Outdoor Air Temperature Control
• The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.
• This control will begin 1 minute after the compressor starts.
• Compressor frequency will adjust base on outdoor air temperature.
13.2.2.
Cooling Overload Control
• Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency)
• The compressor stop if outdoor pipe temperature exceeds 63
°C.
• If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95 indicated: outdoor high pressure rise protection)
13.2.3.
Freeze Prevention Control 1
1. When indoor heat exchanger temperature is lower than 0
°C continuously for 6 minutes, compressor will stop operating.
2. Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 5
°C.
3. At the same time, indoor fan speed will be higher than during its normal operation.
4. If indoor heat exchanger temperature is higher than 5
°C for 5 minutes, the fan speed will return to its normal operation.
13.2.4.
Freeze Prevention Control 2
1. Control start conditions
• During Cooling operation and soft dry operation
- During thermo OFF condition, indoor intake temperature is less than 10
°C or
- Compressor stops for freeze prevention control
• Either one of the conditions above occurs 5 times in 60 minutes.
2. Control contents
• Operation stops
• Timer LED blinks and “H99” indicated
13.2.5.
Dew Prevention Control 1
• To prevent dew formation at indoor unit discharge area.
• This control will be activated if:
- Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled.
- When Cooling or Dry mode is operated more than 20 minutes or more.
• This control stopped if:
- Compressor stopped.
- Remote control setting changed (fan speed / temperature).
- Outdoor air temperature and indoor intake temperature changed.
• Fan speed, angle of louver (vertical airflow angle) will be adjusted accordingly in this control.
- Fan speed will be increased slowly if the unit is in quiet mode but no change in normal cooling mode.
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