Panasonic CS-G95KE CU-G95KE Service Manual page 85

Diagnosis Abnormality / Protection control
display
H11 Indoor / outdoor abnormal
communication
H14 Indoor intake air temperature sensor
abnormality
H15 Outdoor compressor temperature sensor
abnormality
H16 Outdoor Current Transformer open
circuit
H19 Indoor fan motor merchanism lock
H23 Indoor heat exchanger temperature
sensor abnormality
H27 Outdoor air temperature sensor
abnormality
H28 Outdoor heat exchanger temperature
sensor abnormality
H98 Indoor high pressure protection
H99 Indoor heat exchanger anti-freezing
protection
F11 Cooling / Heating cycle changeover
abnormality
F91 Refrigeration cycle abnormality
F93 Outdoor compressor abnormal revolution
F96 IPM (power transistor) overheating
protection
F97 Outdoor compressor overheating
protection
F98 Total running current protection
F99 Outdoor Direct Current (DC) peak
detection
1
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.
• 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 Temporary
Judgement operation
1 min after starting
operation
(Cooling only)
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
85
CS-G95KE CU-G95KE / CS-G125KE CU-G125KE
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
O
(defective or disconnected)
• Outdoor temperature sensor
O
(defective or disconnected)
• Outdoor heat exchanger
O
temperature sensor (defective or
disconnected)
• Air filter dirty
-
• Air circulation short circuit
• Insufficient refrigerant
-
• Air filter dirty
• 4-way valve
-
• V-coil
• No refrigerant
-
(3-way valve is closed)
• Compressor
-
• Outdoor PCB
• Excess refrigerant
-
• Improper heat radiation
• IPM (Power transistor)
• Insufficient refrigerant
-
• Compressor
• Excess refrigerant
-
• Improper heat radiation
• Outdoor PCB
-
• IPM (Power transistor)
• Compressor
1