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Model
CS-E7GKDW CU-E7GKD CS-E9GKDW CU-E9GKD CS-E12GKDW CU-E12GKD
Pages
71
Size
13.11 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner / AIR CONDITIONER
File
cs-e7gkdw-cu-e7gkd-cs-e9gkdw-cu-e9gkd-cs-e12gkdw-c.pdf
Date

Panasonic CS-E7GKDW / CU-E7GKD / CS-E9GKDW / CU-E9GKD / CS-E12GKDW / CU-E12GKD Service Manual ▷ View online

37
b. Patrol operation stop condition
When any of the following condition is fulfilled:
• When “OFF/ON” button is pressed.
• During any operation with Patrol, “Patrol” button is pressed again.
• When “e-ion” button is pressed.
• When OFF Timer activates.
c. Patrol operation disable
• To disable the Patrol Operation during unit start (default) with “OFF/ON” button, press “Patrol” button and hold for 5 seconds,
then release.
• To disable the Patrol Operation, press “Patrol” button and hold for 15 seconds, then release.
C. Control Content
a. Gas Sensor Control
• First 2 minutes from Patrol function activates is stabilization time, during stabilization time, no air dirtiness level is monitored.
The Air Dirtiness level is set to level 2.
• After that, gas sensor starts to record the resistance value at fixed interval. Higher resistance value indicates cleaner air.
• The air dirtiness level is monitored by comparing the current resistance value with maximum resistance value from time to time
to get the Air Dirtiness Value.
• There are 3 air dirtiness levels, based on the Air Dirtiness Value:
- Air Dirtiness level 0: Clean
- Air Dirtiness level 1: Moderate
- Air Dirtiness level 2: Contaminated
• Dirtiness level sensitivity adjustment
It is possible to change the gas sensor sensitivity, where the Threshold value (G1 ~ G4) will be shifted accordingly:
1. Press and release “SET” buttton.
2. Press “Timer increment” / “Timer decrement” button to select sensitivity. (Low 
 Standard (Default) 
 High)
3. Confirm setting by pressing “Timer Set” button. LCD returned to original display after 2 seconds.
4. LCD returned to original display if remote control does not operate for 30 seconds.
b. e-ion Control
• When dirtiness level is 1 or 2, e-ion operation starts.
• If dirtiness level improves from level 2 to level 1, the unit carries out level change after 60 seconds.
• When dirtiness level returns to level 0 continuously for 10 minutes or more, e-ion operation stops.
Dirtiness Level Shift
• For Auto Fan Speed, the fan speed increased based on dirtiness level:
c. Indoor Fan Control
• During any operation mode combines with Patrol operation, fan speed follows respective operation mode.
• During Patrol individual operation if e-ion starts, only Auto Fan Speed and no Powerful operation is allowed. Even if “Fan 
Speed” button is pressed, no signal is sent to air conditioner, and no change on LCD display.
• During Patrol individual operation if e-ion stops, Indoor Fan stop operation.
38
d. Airflow direction (Horizontal, Vertical) Control
• During any operation mode combines with Patrol operation, airflow direction follows respective operation mode.
• During Patrol individual operation if e-ion starts, only Auto Air Swing is allowed. Even if “Air Swing” button is pressed, no signal
is sent to air conditioner, and no change on LCD display.
• During Patrol individual operation if e-ion stops, Airflow direction louver closed.
e. Indicator
• When Patrol operation starts, Patrol Sensor indicator ON.
• When e-ion operation starts based on dirtiness level, e-ion indicator ON.
g. Timer Control
• When ON timer activates when unit stops, previous operation resumes without Patrol operation.
• When ON timer activates during any operation, no change and carry on current operation.
• When OFF timer activates during any operation, all operation stops.
h. Power failure
• During Patrol individual operation, if power failure occurs, after power resumes, Patrol individual operation resumes 
immediately.
• During combination operation, if power failure occurs, after power resumes combination operation resume immediately.
12.1.17. e-ion Operation
A. Purpose
This operation provides clean air by producing negative ions to attract dust captured at the positively charged e-ion filters.
B. Control Condition
a. e-ion operation start condition
• During unit running at any operation mode, if “e-ion” button is pressed, combination operation (operation mode + e-ion
operation) starts.
• During unit is OFF, if “e-ion” button is pressed, e-ion individual operation starts.
b. e-ion operation stop condition
• When “OFF/ON” button is pressed to stop the operation.
• When “e-ion”  button is pressed again.
• When “Patrol” button is pressed.
• When OFF Timer activates.
f.  Remote Control Receiving Sound
• Normal Operation
• Patrol Mode
• Patrol Mode
• Stop

Patrol Mode
Stop
Normal Operation
Patrol
:
:
:
:
Beep
Long Beep
Beep
Beep
39
c. e-ion operation pause condition
• When indoor fan stop (during deice, odor cut control, thermostat off, etc.). e-ion operation resume after indoor fan restarts.
• When indoor intake temperature   40
°C. e-ion operation resume after indoor intake temperature < 40°C continuously for 30
minutes.
C. Control Content
a. Indoor fan control
• During any operation mode combines with e-ion operation, fan speed follows respective operation mode.
• During e-ion individual operation - only Auto Fan Speed and no Powerful operation is allowed. Even if Fan Speed button is
pressed, no signal is sent to air conditioner, and no change on LCD display.
Auto Fan Speed for e-ion operation switches between HLo and CLo at pattern below:
b. Airflow direction control
• During any operation mode combines with e-ion operation, airflow direction follows respective operation mode.
• During e-ion individual operation, only Auto Air Swing is allowed. Even if Air Swing button is pressed, no signal is sent to air
conditioner, and no change on LCD display.
c. Timer control
• When ON timer activates when unit stops, previous operation resumes without e-ion operation.
• When ON timer activates during any operation, no change and carry on current operation.
• When OFF timer activates during any operation, all operation stops.
d. Indicator
• When e-ion operation starts, e-ion indicator ON.
e. e-ion Check Mode
• To check if e-ion is malfunctioning, during e-ion operation press “e-ion” button for 15 seconds and release to enter e-ion Check
Mode and supplies power to the e-ion Air Purifying System.
• If abnormal discharge is detected at filter (short-circuited) due to water or dust adhesion, etc., the e-ion indicator blinks 
immediately.
f. Power failure
• During e-ion individual operation, if power failure occurs, after power resumes, e-ion individual operation resumes 
immediately.
• During combination operation, if power failure occurs, after power resumes, combination operation resume immediately.
g. Error Detection Control
When e-ion indicator blink, it indicates error listed below:
i. e-ion Air Purifying system main connector to PCB is open:
Judgement Method
• During e-ion operation (include during Patrol operation), e-ion Air Purifying system main connector to PCB is opened.
Troubleshooting Methods
• Connect the connector or stop operation (include during Patrol operation) to cancel the blinking.
ii. Abnormal Discharge
Judgement Method
• During e-ion operation, when feedback voltage is -Lo (at microcontroller) is detected, it is judged abnormal discharge and
stops power supplies to the e-ion Air Purifying system.
• The unit retries after 30 minutes and repeat for 24 times. (not applicable for e-ion Check Mode)
40
Troubleshooting Method
• Press “e-ion” button or “OFF/ON” button to stop the operation and check the e-ion Air Purifying system main connector to
PCB.
• After that, press “e-ion” button again to confirm the e-ion indicator not blinking.
• The 24 times counter will be clear after 10 minutes of normal operation or when operation stops.
Error Reset Method
• Press “OFF/ON” button to OFF the operation.
• Press AUTO OFF/ON button at indoor unit to OFF the operation.
• OFF Timer activates.
• Press “e-ion” button during e-ion individual mode.
• Power supply reset.
iii. e-ion breakdown
Judgement Method
• When hi-feedback voltage (at microcontroller) supplied to filter during e-ion stop, due to PCB or filter’s high voltage power
supply damage.
• Operations except e-ion continue. Both Timer indicator and e-ion indicator blink.
Troubleshooting Method
• Press “e-ion” button or “OFF/ON” button to stop the operation.
• Change main circuit board or filter’s high voltage power supply.
• When lo-feedback voltage supplied to e-ion Air Purifying system during e-ion operation, e-ion indicator and Timer indicator
stop blinking.
12.2. Protection Control
12.2.1.
Protection Control For All Operations
12.2.1.1. Time Delay Safety Control
1. The compressor will not start for 3 minutes after stop of the operation.
2. This control is not applicable if the power supply is cut off and on again or after 4-way valve deices condition.
12.2.1.2. 30 Seconds Forced Operation
1. Once compressor starts the operation, it will not stop its operation for 30 seconds.
2. However, it can be stopped with the remote control or the Auto Switch on the indoor unit.
12.2.1.3. 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.
Model
E7GK
E9GK
E12GK
Operation Mode
X (A)
Y (A)
X (A)
Y (A)
X (A)
Y (A)
Cooling/Soft Dry (A)
3.95
15.0
4.54
15.0
6.86
15.0
Cooling/Soft Dry (B)
3.6
15.0
4.12
15.0
6.35
15.0
Heating
4.37
15.0
5.57
15.0
8.03
15.0
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