Panasonic CS-UE12RKE - Page 63

63
Diagnosis
display
Abnormality /
Protection control
Abnormality
Judgment
Protection
Operation
Problem Check location
H41
Abnormal wiring or
piping connection
— —
Wrong wiring and
connecting pipe, expansion
valve abnormality
 Check indoor/outdoor
connection wire and connection
pipe
 Expansion valve and lead wire
and connector
H59
ECONAVI sensor
abnormality
Continuous for 25s —
ECONAVI sensor open or
short circuit
 ECONAVI sensor (defective or
disconnected)
 ECONAVI PCB
H64
Outdoor high
pressure sensor
abnormality
Continuous for 1
minutes
—
High pressure sensor open
circuit during compressor
stop
 High pressure sensor
 Lead wire and connector
H70
Light sensor
abnormality
Continuous for 24
hours, 15days
—
Light sensor open or
short circuit
 Light sensor (defective or
disconnected)
H97
Outdoor fan motor
mechanism lock
2 times happen
within 30 minutes
—
Outdoor fan motor lock or
feedback abnormal
 Outdoor fan motor lead wire
and connector
 Fan motor lock or block
H98
Indoor high pressure
protection
— —
Indoor high pressure
protection (Heating)
 Check indoor heat exchanger
 Air filter dirty
 Air circulation short circuit
H99
Indoor operating unit
freeze protection
— —
Indoor freeze protection
(Cooling)
 Check indoor heat exchanger
 Air filter dirty
 Air circulation short circuit
F11
4-way valve
switching
abnormality
4 times happen
within 30 minutes
—
4-way valve switching
abnormal
 4-way valve
 Lead wire and connector
F17
Indoor standby units
freezing abnormality
3 times happen
within 40 minutes
—
Wrong wiring and
connecting pipe, expansion
valve leakage, indoor heat
exchanger sensor open
circuit
 Check indoor/outdoor
connection wire and pipe
 Indoor heat exchanger sensor
lead wire and connector
 Expansion valve lead wire and
connector
F90
Power factor
correction
(PFC) circuit
protection
4 times happen
within 10 minutes
—
Power factor correction
circuit abnormal
 Outdoor PCB faulty
F91
Refrigeration cycle
abnormality
2 times happen
within 20 minutes
—
Refrigeration cycle
abnormal
 Insufficient refrigerant or valve
close
F93
Compressor
abnormal revolution
4 times happen
within 20 minutes
—
Compressor abnormal
revolution
 Power transistor module faulty
or compressor lock
F94
Compressor
discharge overshoot
protection
4 times happen
within 30 minutes
—
Compressor discharge
pressure overshoot
 Check refrigeration system
F95
Outdoor cooling high
pressure protection
4 times happen
within 20 minutes
—
Cooling high pressure
protection
 Check refrigeration system
 Outdoor air circuit
F96
Power transistor
module overheating
protection
4 times happen
within 30 minutes
—
Power transistor module
overheat
 PCB faulty
 Outdoor air circuit (fan motor)
F97
Compressor
overheating
protection
3 times happen
within 30 minutes
— Compressor overheat
 Insufficient refrigerant
F98
Total running current
protection
3 times happen
within 20 minutes
— Total current protection
 Check refrigeration system
 Power source or compressor
lock
F99
Outdoor direct
current (DC) peak
detection
Continuous
happen for 7 times
—
Power transistor module
current protection
 Power transistor module faulty
or compressor lock