Panasonic CS-E21JB4EA / CU-E21HBEA Service Manual ▷ View online
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[Heating]
• According to indoor pipe temperature, automatic heating fan speed is determined as follows.
B. Feedback control
• Immediately after the fan motor started, feedback control is performed once every second.
• During fan motor on, if fan motor feedback 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor error counter
increase, fan motor is then stop and restart. If the fan motor counter becomes 7 times, then H19 - fan motor error is detected.
Operation stops and cannot on back.
Operation stops and cannot on back.
12.1.7.
Outdoor Fan Motor Operation
Outdoor fan motor is operated with 15 fan speed. It starts when compressor starts operation and it stops 30 seconds after compres-
sor stops operation.
sor stops operation.
12.2. Airflow Direction
1. There is one type of airflow, vertical airflow (directed by horizontal vane).
2. Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger
2. Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger
temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control).
12.2.1.
Vertical Airflow
Operation Mode
Airflow Direction
Vane Angle (
°)
1
2
3
4
5
Heating
Auto with Heat Exchanger
A
Downward fix
70
B
Downward fix
70
Temperature
C
Upward fix
20
D
Upward fix
20
Manual
20
33
45
58
70
Cooling
Auto
20 ~ 70
Manual
20
33
45
58
70
Soft Dry
Auto
20 ~ 70
Manual
20
33
45
58
70
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1. Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the angles as stated
above. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1
below. When the air conditioner is stopped using remote control, the vane will shift to close position.
below. When the air conditioner is stopped using remote control, the vane will shift to close position.
2. Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above and the positions
of the vane are as Figure 2 below. When the air conditioner is stopped using remote control, the vane will shift to close
position.
position.
12.3. Quiet operation (Cooling Mode/Cooling area of Soft Dry Mode)
A. Purpose
To provide quiet cooling operation compare to normal operation.
B. Control condition
a. Quiet operation start condition
• When “quiet” button at remote control is pressed.
• When “quiet” button at remote control is pressed.
Quiet LED illuminates.
b. Quiet operation stop condition
1. When one of the following conditions is satisfied, quiet operation stops:
a. Powerful button is pressed.
b. Stop by OFF/ON switch.
b. Stop by OFF/ON switch.
c. Timer “off” activates.
d. Quiet button is pressed again.
2. When quiet operation is stopped, operation is shifted to normal operation with previous setting.
3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode.
5. During quiet operation, if timer “on” activates, quiet operation maintains.
6. After off, when on back, quiet operation is not memorised.
3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode.
5. During quiet operation, if timer “on” activates, quiet operation maintains.
6. After off, when on back, quiet operation is not memorised.
C. Control contents
1. Auto fan speed is changed from normal setting to quiet setting of respective fan speed.
This is to reduce sound of Hi, Me, Lo for 3dB.
2. Manual fan speed for quiet operation is 1 step from setting fan speed.
3. Outdoor fan speed is changed to Q-Lo
4. Compressor frequency reduced.
3. Outdoor fan speed is changed to Q-Lo
4. Compressor frequency reduced.
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12.3.1.
Quiet operation (Heating)
A. Purpose
To provide quiet heating operation compare to normal operation.
B. Control condition
a. Quiet operation start condition
• When “quiet” button at remote control is pressed.
• When “quiet” button at remote control is pressed.
Quiet LED illuminates.
b. Quiet operation stop condition
1. When one of the following conditions is satisfied, quiet operation stops:
a. Powerful button is pressed.
b. Stop by OFF/ON switch.
b. Stop by OFF/ON switch.
c. Timer “off” activates.
d. Quiet button is pressed again.
2. When quiet operation is stopped, operation is shifted to normal operation with previous setting.
3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode, except fan only mode.
5. During quiet operation, if timer “on” activates, quiet operation maintains.
6. After off, when on back, quiet operation is not memorised.
3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode, except fan only mode.
5. During quiet operation, if timer “on” activates, quiet operation maintains.
6. After off, when on back, quiet operation is not memorised.
C. Control contents
a. Fan Speed Auto
• Indoor FM RPM depends on pipe temperature sensor of indoor heat exchanger.
• Indoor FM RPM depends on pipe temperature sensor of indoor heat exchanger.
Auto fan speed is changed from normal setting to quiet setting of respective fan speed.
This is to reduce sound of Hi, Me, Lo for 3dB.
This is to reduce sound of Hi, Me, Lo for 3dB.
b. Fan Speed Manual
• Manual fan speed for quiet operation is - 1 step from setting fan speed.
• Manual fan speed for quiet operation is - 1 step from setting fan speed.
c. Compressor frequency reduced.
12.4. Powerful Mode Operation
When the powerful mode is selected, the internal setting temperature will shift higher up to 3.5
°C (for Heating) or lower up to 2°C
(for Cooling/Soft Dry) than remote control setting temperature for 20 minutes to achieve the setting temperature quickly.
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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.
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.
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.
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
QUIET
POWERFUL
AIR SWING
Color
Green
Orange
Orange
Orange
Orange
Light ON
Operation ON
Timer Setting ON
Quiet Mode ON
Powerful Mode ON
Auto Air Swing ON
Light OFF
Operation OFF
Timer Setting OFF
Quiet Mode OFF
Powerful Mode OFF
Auto Air Swing OFF
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