61
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
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
pressure
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)
LED 6 LED 5 LED 4 LED 3 LED 2 LED 1
Abnormality
judgement
Protection
operation
Problem
Check location
Diagnosis
display
Abnormality
or
protection
control
Summary of Contents for CU-2E15LBE
Page 11: ...11 Outdoor Unit CU 2E15LBE Outdoor Unit CU 2E18LBE ...
Page 12: ...12 Outdoor Unit CU 3E18LBE ...
Page 13: ...13 Outdoor Unit CU 4E23LBE ...
Page 14: ...14 ...
Page 15: ...15 Outdoor Unit CU 4E27CBPG ...
Page 16: ...16 ...
Page 17: ...17 3 Dimensions 3 1 CU 2E15LBE CU 2E18LBE 3 2 CU 3E18LBE CU 4E23LBE ...
Page 18: ...18 4 Refrigeration Cycle Diagram 4 1 CU 2E15LBE CU 2E18LBE ...
Page 19: ...19 4 2 CU 3E18LBE ...
Page 20: ...20 4 3 CU 4E23LBE ...
Page 21: ...21 5 Block Diagram 5 1 CU 2E15LBE CU 2E18LBE ...
Page 22: ...22 5 2 CU 3E18LBE ...
Page 23: ...23 5 3 CU 4E23LBE ...
Page 24: ...24 6 Wiring Connection Diagram 6 1 CU 2E15LBE CU 2E18LBE ...
Page 25: ...25 6 2 CU 3E18LBE ...
Page 26: ...26 6 3 CU 4E23LBE ...
Page 27: ...27 7 Electronic Circuit Diagram 7 1 CU 2E15LBE CU 2E18LBE ...
Page 28: ...28 7 2 CU 3E18LBE ...
Page 29: ...29 7 3 CU 4E23LBE ...
Page 30: ...30 8 Printed Circuit Board 8 1 Main Printed Circuit Board 8 1 1 CU 2E15LBE CU 2E18LBE ...
Page 31: ...31 8 1 2 CU 3E18LBE CU 4E23LBE ...
Page 32: ...32 8 2 Noise Filter Printed Circuit Board 8 3 Display Printed Circuit Board ...
Page 35: ...35 9 3 CU 3E18LBE 9 3 1 Check Points ...
Page 36: ...36 9 4 CU 4E23LBE 9 4 1 Check Points ...
Page 68: ...68 ...
Page 69: ...69 19 1 2 Two Indoor Unit Operation ...
Page 70: ...70 ...
Page 71: ...71 19 2 Operation Characteristics CU 2E18LBE 19 2 1 One Indoor Unit Operation ...
Page 72: ...72 ...
Page 73: ...73 19 2 2 Two Indoor Unit Operation ...
Page 74: ...74 ...
Page 75: ...75 19 3 Operation Characteristics CU 3E18LBE 19 3 1 One Indoor Unit Operation ...
Page 76: ...76 ...
Page 77: ...77 ...
Page 78: ...78 ...
Page 79: ...79 ...
Page 80: ...80 ...
Page 81: ...81 19 3 2 Two Indoor Unit Operation ...
Page 82: ...82 ...
Page 83: ...83 ...
Page 84: ...84 ...
Page 85: ...85 19 3 3 Three Indoor Unit Operation ...
Page 86: ...86 ...
Page 87: ...87 19 4 Operation Characteristics CU 4E23LBE 19 4 1 One Indoor Unit Operation ...
Page 88: ...88 ...
Page 89: ...89 ...
Page 90: ...90 ...
Page 91: ...91 ...
Page 92: ...92 ...
Page 93: ...93 19 4 2 Two Indoor Unit Operation ...
Page 94: ...94 ...
Page 95: ...95 19 4 3 Three Indoor Unit Operation ...
Page 96: ...96 ...
Page 97: ...97 19 4 4 Four Indoor Unit Operation ...
Page 98: ...98 ...