Panasonic CS-G95KE / CS-G125KE / CU-G95KE / CU-G125KE Service Manual ▷ View online
Diagnosis
display
Abnormality / Protection control
Abnormality
Judgement
Temporary
operation
Primary location to verify
H11
Indoor / outdoor abnormal
communication
communication
1 min after starting
operation
operation
-
•
Internal / external cable connections
•
Indoor / Outdoor PCB
H14
Indoor intake air temperature sensor
abnormality
abnormality
-
•
Intake air temperature sensor
(defective or disconnected)
(defective or disconnected)
1
H15
Outdoor compressor temperature sensor
abnormality
abnormality
-
•
Compressor temperature sensor
(defective or disconnected)
(defective or disconnected)
H16
Outdoor Current Transformer open
circuit
circuit
-
•
Outdoor PCB
•
IPM (Power transistor) module
H19
Indoor fan motor merchanism lock
-
•
Indoor PCB
•
Fan motor
H23
Indoor heat exchanger temperature
sensor abnormality
sensor abnormality
O
(Cooling only)
•
Heat exchanger temperature sensor
(defective or disconnected)
(defective or disconnected)
H27
Outdoor air temperature sensor
abnormality
abnormality
O
•
Outdoor temperature sensor
(defective or disconnected)
(defective or disconnected)
H28
Outdoor heat exchanger temperature
sensor abnormality
sensor abnormality
O
•
Outdoor heat exchanger
temperature sensor (defective or
disconnected)
temperature sensor (defective or
disconnected)
H98
Indoor high pressure protection
-
•
Air filter dirty
•
Air circulation short circuit
H99
Indoor heat exchanger anti-freezing
protection
protection
-
•
Insufficient refrigerant
•
Air filter dirty
F11
Cooling / Heating cycle changeover
abnormality
abnormality
4 times occurance
within 40 minutes
within 40 minutes
-
•
4-way valve
•
V-coil
F91
Refrigeration cycle abnormality
2 times occurance
within 30 minutes
within 30 minutes
-
•
No refrigerant
(3-way valve is closed)
F93
Outdoor compressor abnormal revolution
4 times occurance
within 30 minutes
within 30 minutes
-
•
Compressor
•
Outdoor PCB
F96
IPM (power transistor) overheating
protection
protection
4 times occurance
within 40 minutes
within 40 minutes
-
•
Excess refrigerant
•
Improper heat radiation
•
IPM (Power transistor)
F97
Outdoor compressor overheating
protection
protection
4 times occurance
within 20 minutes
within 20 minutes
-
•
Insufficient refrigerant
•
Compressor
F98
Total running current protection
3 times occurance
within 30 minutes
within 30 minutes
-
•
Excess refrigerant
•
Improper heat radiation
F99
Outdoor Direct Current (DC) peak
detection
detection
7 times occurance
continuously
continuously
-
•
Outdoor PCB
•
IPM (Power transistor)
•
Compressor
1
This diagnosis mode can be omitted by the following procedure.
This diagnosis mode can be omitted by the following procedure.
•
Press the AUTO button (at indoor unit) continuously for 16 seconds or < 21 seconds, “beep”, “beep”, “beep”, “beep” will be heard
at 16th second. “E1” will be displayed at the indoor unit. This is to indicate H14 abnormality detection is enable.
at 16th second. “E1” will be displayed at the indoor unit. This is to indicate H14 abnormality detection is enable.
•
Press the Auto switch once. A “beep” sound will be heard. “E2” will be displayed at the indoor unit. This is to indicate H14
abnormality detection is disabled.
abnormality detection is disabled.
85
CS-G95KE CU-G95KE / CS-G125KE CU-G125KE
(a) Current Transformer Defective
When the Current Transformer (CT) is an open circuit, total running current is less than 1.88A and the indicated frequency is
53 Hz (CU-G95KE) or 74 Hz (CU-G125KE) 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.
53 Hz (CU-G95KE) or 74 Hz (CU-G125KE) 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.
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.
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
86
S-G95KE CU-G95KE / CS-G125KE CU-G125KE
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.
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.
control and you will find a resetting terminal, and by shorting
it with a minus screwdriver, it will return to normal.
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
order to prevent operating errors caused by using two
remote controls, set up the remote control [B
←→
A] switch.
The unit is set to A when it is shipped.
11.3. Remote Control
By adding a jumper wire to the remote control side, it is possible to select 4 transmission codes including one at time of
delivery condition (1).
delivery condition (1).
Remote Control
Indoor unit
Note
Switch SW B
←→
A
J - B
Segment Display
1
A
——
A
At product delivery
2
B
——
B
3
A
Jumper wire
C
4
B
Jumper wire
D
Procedure:-
•
Press the Auto button (at indoor unit) continuously for 11 seconds or < 16 seconds; “beep” “beep” “beep” will be heard
and the current transmission code is displayed (A or b or c or d). To switch to condition (2) transmission code as above,
switch over the Remote Control A
and the current transmission code is displayed (A or b or c or d). To switch to condition (2) transmission code as above,
switch over the Remote Control A
←→
B switch to B; and press any button at the remote control to set the transmission
code.
•
To switch to condition (3) and (4) transmission code, follow the same procedure as mentioned above.
87
CS-G95KE CU-G95KE / CS-G125KE CU-G125KE
1. Remove the Front Grille
Fig. 1
2. Remove the Indoor Control Board
Fig. 3
Fig. 2
Fig. 4
11.4. Disassembly of Parts
a. Indoor Control Board Removal Procedure
88
S-G95KE CU-G95KE / CS-G125KE CU-G125KE
Click on the first or last page to see other CS-G95KE / CS-G125KE / CU-G95KE / CU-G125KE service manuals if exist.