Text preview for : 81204310.pdf part of panasonic cs-g123ke i have some code indicated F99 and the air conditioning stop
i think this might be same model,it shows the fault codes at the end i think
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CS-G93KE
Servicing Information
A. TROUBLESHOOTING
1. RATED FREQUENCY OPERATION
During troubleshooting and servicing, rated compressor operating frequency must be obtained in order to check the specification and technical data. Below are the methods used to obtain rated compressor operating specification. (a) Cooling (i) Press the Test Run button on the indoor unit. The air conditioner starts operation at Cooling rated frequency.
TEST RUN BUTTON
POWER SWITCH
POWERFUL
POWER SLEEP TIMER
HIGH
POWER MONITOR
LOW
(ii) Short the service terminal (CN-S) of the outdoor printed circuit board. The air conditioner starts operation at Cooling rated frequency.
CN-S
(b) Heating Keep pressing the Test Run button, switch off and on the Power Switch, then release the Test Run button. The air conditioner starts operation at Heating rated frequency.
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CS-G93KE
Servicing Information
2. TROUBLESHOOTING AIR CONDITIONER Refrigeration cycle system
In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor or a fan. The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions; the standard values for them are shown in the table on the right.
Normal Pressure and Outlet Air Temperature (Standard) Gas pressure MPa (kg/cm2G) Cooling mode Heating Mode 0.4 ~ 0.6 (4 ~ 6) 1.5 ~ 2.1 (15 ~ 21) Outlet air temperature (°C) 12 ~ 16 36 ~ 45
5 Condition: · Indoor fan speed; High. · Outdoor temperature is 35°C at cooling mode and 7°C at heating mode. · Compressor operates at rated frequency.
Difference in the intake and outlet air temperatures
Above 8°C (15 minutes after an operation is started.) at cooling mode Above 14°C (15 minutes after an operation is started.) at heating mode
Normal
q
Measure the air temperature difference
Less than 8°C at cooling mode Less than 14°C at heating mode
Value of electric current during operation
Higher than specified
Dusty condenser preventing heat radiation Excessive amount of refrigerant
q
Measure the electric current during operation
Lower than specified
Cooling Mode
High
Gas side pressure
Low
Inefficient compressor Insufficient refrigerant
Low
q
Measure the gas side pressure
Clogged strainer or capillary tube Inefficient compressor
Low Heating Mode
Low
Insufficient refrigerant
Low
Clogged strainer or capillary tube
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CS-G93KE
Servicing Information
1. Relationship between the condition of the air conditioner and pressure and electric current
Cooling Mode Condition of the air conditioner Low Pressure High Pressure Electric current during operation Low Pressure Heating Mode High Pressure Electric current during operation
Insufficient refrigerant (gas leakage) Clogged capillary tube or Strainer Short circuit in the indoor unit Heat radiation deficiency of the outdoor unit Inefficient compression
q
V V V B B
V V V B V
V V V B V
V B B V B
V B B V V
V B B V V
Carry out the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.
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CS-G93KE
Servicing Information
B.
q
SELF DIAGNOSIS DISPLAY
The diagnostic display can be seen on the receiver of the Front Grille. When an abnormality occurs, the unit automatically stops, and the TIMER LED blinks to indicate a malfunction. At the same time, the type of abnormality will be indicated on the receiver as shown in the diagram below. Providing this information reduces the time spent in diagnosing procedures.
Display
(Red)
POWERFUL
POWER SLEEP TIMER
P O W E R LOW MONITOR
HIGH
TIMER
q
q
The diagnostic display disappears when the power is turned off. When power is re-supplied and the Diagnostic Terminals the Remote Control is shorted, the type of the previous abnormality and the protection control works will be displayed on the receiver for approximately 10 seconds. Diagnostic Terminals
To be used by the service technician only.
OPEN
q
q
By starting cooling operation using TEST RUN button and short the Diagnostic Terminals at the remote control, the previous abnormalities are deleted. Depending on the type of abnormality, you may be able to override the abnormality and use temporary operation (for abnormalities indicated by t mark in the table). Use the remote control to select cooling or heating operation mode and press OFF/ON button. At this moment, four short beeps "bip.bip.bip.bip" will sound and TIMER LED will blink.
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CS-G93KE
Servicing Information
Diagnosis display H11 Abnormality / Protection control Indoor / outdoor abnormal communication Indoor intake air temperature sensor abnormality Outdoor compressor temperature sensor abnormality Outdoor Current Transformer open circuit Indoor fan motor mechanism lock Abnormality Judgement 1 min after starting operation Temporary operation Primary location to verify · Internal / external cable connections · Indoor / Outdoor PCB · Intake air temperature sensor (defective or disconnected) · Compressor temperature sensor (defective or disconnected) · Outdoor PCB · IPM (Power transistor) module · Indoor PCB · Fan motor · Heat exchanger temperature sensor (defective or disconnected) · Outdoor temperature sensor (defective or disconnected) · Outdoor heat exchanger temperature sensor (defective or disconnected) · Air filter dirty · Air circulation short circuit · Insufficient refrigerant · Air filter dirty · 4-way valve · V-coil
H14
H15
H16
H19
H23
Indoor heat exchanger temperature sensor abnormality Outdoor air temperature sensor abnormality Outdoor heat exchanger temperature sensor abnormality
t (Cooling only) t
H27
H28
t
H98
Indoor high pressure protection
H99
Indoor heat exchanger anti-freezing protection Cooling / Heating cycle changeover abnormality 4 times occurance within 40 minutes 2 times occurance within 30 minutes 4 times occurance within 30 minutes 4 times occurance within 40 minutes 4 times occurance within 20 minutes 3 times occurance within 30 minutes 7 times occurance continuously
F11
F91
Refrigeration cycle abnormality
· No refrigerant (3-way valve is closed)
F93
Outdoor compressor abnormal revolution
· Compressor · Outdoor PCB
F96
IPM (power transistor) overheating protection
· Excess refrigerant · Improper heat radiation · IPM (Power transistor) · Insufficient refrigerant · Compressor
F97
Outdoor compressor overheating protection
F98
Total running current protection
· Excess refrigerant · Improper heat radiation
F99
Outdoor Direct Current (DC) peak detection
· Outdoor PCB · IPM (Power transistor) · Compressor
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CS-G93KE
Servicing Information
(a) Current Transformer Defective When the Current Transformer (CT) is an open circuit, total running current is less than 1.88 A and the indicated frequency is 53 Hz (CU-G93KE) or 74 Hz (CU-G123KE) or above. If this condition continues for 20 seconds, the abnormality signal is sent from outdoor to indoor after 3 minutes of operation and [H16] is displayed.
(b) 4 Way Valve Defective i. Heating Operation (except Deice) When the indoor heat exchanger temperature is lower than 5°C after 4 minutes of operation, the operation stops and restarts after 3 minutes. If this phenomenon occurs for 4 times within 40 minutes, [F11] is displayed. ii. Cooling Operation When the indoor heat exchanger temperature is higher than 45°C after 4 minutes of operation, the operation stops and restarts after 3 minutes. If this phenomenon occurs for 4 times within 40 minutes, [F11] is displayed. The abnormality is not judged in the following conditions: deice operation 2 minutes after deice operation hot start 2 minutes after hot start 3 minutes after heating and cooling/soft dry mode changeover
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CS-G93KE
Servicing Information
C. REMOTE CONTROL
a. Remote Control Reset When the batteries are inserted for the first time, or the batteries are replaced, all the indications will blink and the remote control might not work. If this happens, remove the back cover of the remote control and you will find a resetting terminal, and by shorting it with a minus screwdriver, it will return to normal.
Reset Button
b.
Changing the wireless remote control transmission code When two indoor units are installed in the same room, in order to prevent operating errors caused by using two remote controls, set up the remote control [B A] switch (SW1). The unit is set to A when it is shipped.
Main electronic controller
SW1 AB
BA
By adding a jumper wire to the remote control side and shorting the J2 at the indoor printed circuit board, it is possible to select 4 transmission codes including one at time of delivery condition (1).
Remote control Switch SW B A 1 2 3 4 A B A B Jumper wire Jumper wire JB
Indoor printed circuit board Note Switch SW1 A B A B Shorted Shorted J2 At product delivery
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CS-G93KE
Servicing Information
D.
a.
DISASSEMBLY OF PARTS
Indoor Control Board Removal Procedure 1. Remove the Front Grille
Fig. 1 Fig. 2
2 Remove the Front Grille 3 Press the 2 tabs
1 Remove caps and screws
2. Remove the Indoor Control Board
Fig. 3
4 Disconnect all connectors
Fig. 4
5 Remove the whole control board.
4 Remove earth wire screw
4 Remove screws
Note : Remove the indoor and outdoor connecting wires from terminal 1, 2, 3 and i.
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CS-G93KE
Servicing Information
b. Removal of Electronic Controller Procedure
Fig. 5 Fig. 6
2 Remove the particular plate
1 Remove screw
2 Remove the particular plate
Fig. 7
Fig. 8
4 Slide to remove PCB cover
3 Remove screw
Fig. 9
Fig. 10
6 Remove the Electronic Controller
5 Remove screw
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CS-G93KE
Servicing Information
c. Indoor Fan Motor Removal Procedure
Fig. 11 Fig. 12
2 Press down 1 Remove screw Tabs
1 Remove screw 2 Press up
Fig. 13
Fig. 14
3 Remove the front cover
4 Remove the side cover
Fig. 15
5 Remove the Cross Flow Fan Screw
6 Remove the Indoor Fan Motor
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CS-G93KE
Servicing Information
d. Cross Flow Fan Removal Procedure 1. Remove Discharge Grille
Fig. 16
1 Remove the Discharge Grille
1.
Remove Cross Flow Fan
Fig. 17 Fig. 18
2 Remove the bushing
2 Remove the screw
3 Release the slot of indoor heat exchanger from the chassis
Fig. 19
3 Pull slightly
4 Remove the Cross Flow Fan
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CS-G93KE
Servicing Information
c. Outdoor Electronic Controller Removal Procedure
! WARNING
· Be save to return the wiring to its original position · There are many high voltage components within the heat sink cover so never touch the interior during operation. Wait at least two minutes after power has been turned off.
1. Remove the top panel and front panel
Fig. 20
1 Remove screw 3 Remove Top Panel
Fig. 21
! Warning ! Do not touch High Voltage Area
5 Remove Front Panel
2 Remove 2 screws
4 Remove 2 screws
2. Remove the Outdoor Electronic Controller
Fig. 22 Fig. 23
6 Remove 5 screws
7 Disconnect all connectors
! Caution! When handling electronic controller, be careful of electrostatic discharge.
8 Remove the electronic controller
Note : Use magnetic type of screw driver to avoid dropping of the screws
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CS-G93KE
Servicing Information
f. Propeller Fan Removal Procedure
Fig. 24 Fig. 25
2 Remove the propeller fan 1 Remove the nut (clockwise direction)
g.
Outdoor Fan Motor Removal Procedure
Fig. 26 Fig. 27
3 Remove the connector 4 Remove 4 screws
Fig. 28
5 Remove the Outdoor Fan Motor
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