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17.2. Self Diagnosis Function (CU-3E18LBE and CU-4E23LBE)
• The display screen of wireless remote control unit and the self-diagnosis LEDs (green) on the outdoor printed circuit board in the
outdoor unit can be used to identify the location of the problem.
Refer to the table below to identify and solve the cause of the problem, and then re-start the air conditioner system.
• If the problem is solved and operation returns to normal.
LED 1 illuminates and others LED are off.
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
H11
Indoor/outdoor
abnormal
communication
After
operation for
1 minute
Indoor fan only
operation can
start by
entering into
force cooling
operation
Indoor/outdoor
communication not
establish
• Indoor/outdoor
wire terminal
• Indoor/outdoor
PCB
• Indoor/outdoor
connection wire
H12
Indoor unit
capacity
unmatched
90s after
power supply
—
Total indoor
capability more than
maximum limit or
less than minimum
limit, or number of
indoor unit less than
two.
• Indoor/outdoor
connection wire
• Indoor/outdoor
PCB
• Specification and
combination table
in catalogue
H15
Compressor
temperature
sensor
abnormality
Continuous
for 5s
—
Compressor
temperature sensor
open or short circuit
• Compressor
temperature
sensor lead wire
and connector
H16
Outdoor
current
transformer
(CT)
abnormality
—
—
Current transformer
faulty or compressor
faulty
• Outdoor PCB
faulty or
compressor
faulty
H27
Outdoor air
temperature
sensor
abnormality
Continuous
for 5s
—
Outdoor air
temperature sensor
open or short circuit
• Outdoor air
temperature
sensor lead wire
and connector
H28
Outdoor heat
exchanger
temperature
sensor 1
abnormality
Continuous
for 5s
—
Outdoor heat
exchanger
temperature sensor 1
open or short circuit
• Outdoor heat
exchanger
temperature
sensor 1 lead
wire and
connector
H32
Outdoor heat
exchanger
temperature
sensor 2
abnormality
Continuous
for 5s
—
Outdoor heat
exchanger
temperature sensor 2
open or short circuit
• Outdoor heat
exchanger
temperature
sensor 2 lead
wire and
connector
H33
Indoor /
outdoor
misconnection
abnormality
—
—
Indoor and outdoor
rated voltage
different
• Indoor and
outdoor units
check
H36
Outdoor gas
pipe
temperature
sensor
abnormality
Continuous
for 5s
Heating
protection
operation only
Outdoor gas pipe
temperature sensor
open or short circuit
• Outdoor gas pipe
temperature
sensor lead wire
and connector
H37
Outdoor liquid
pipe
temperature
sensor
abnormality
Continuous
for 5s
Cooling
protection
operation only
Outdoor liquid pipe
temperature sensor
open or short circuit
• Outdoor liquid
pipe temperature
sensor lead wire
and connector
Содержание CU-2E15LBE
Страница 11: ...11 Outdoor Unit CU 2E15LBE Outdoor Unit CU 2E18LBE ...
Страница 12: ...12 Outdoor Unit CU 3E18LBE ...
Страница 13: ...13 Outdoor Unit CU 4E23LBE ...
Страница 14: ...14 ...
Страница 15: ...15 Outdoor Unit CU 4E27CBPG ...
Страница 16: ...16 ...
Страница 17: ...17 3 Dimensions 3 1 CU 2E15LBE CU 2E18LBE 3 2 CU 3E18LBE CU 4E23LBE ...
Страница 18: ...18 4 Refrigeration Cycle Diagram 4 1 CU 2E15LBE CU 2E18LBE ...
Страница 19: ...19 4 2 CU 3E18LBE ...
Страница 20: ...20 4 3 CU 4E23LBE ...
Страница 21: ...21 5 Block Diagram 5 1 CU 2E15LBE CU 2E18LBE ...
Страница 22: ...22 5 2 CU 3E18LBE ...
Страница 23: ...23 5 3 CU 4E23LBE ...
Страница 24: ...24 6 Wiring Connection Diagram 6 1 CU 2E15LBE CU 2E18LBE ...
Страница 25: ...25 6 2 CU 3E18LBE ...
Страница 26: ...26 6 3 CU 4E23LBE ...
Страница 27: ...27 7 Electronic Circuit Diagram 7 1 CU 2E15LBE CU 2E18LBE ...
Страница 28: ...28 7 2 CU 3E18LBE ...
Страница 29: ...29 7 3 CU 4E23LBE ...
Страница 30: ...30 8 Printed Circuit Board 8 1 Main Printed Circuit Board 8 1 1 CU 2E15LBE CU 2E18LBE ...
Страница 31: ...31 8 1 2 CU 3E18LBE CU 4E23LBE ...
Страница 32: ...32 8 2 Noise Filter Printed Circuit Board 8 3 Display Printed Circuit Board ...
Страница 35: ...35 9 3 CU 3E18LBE 9 3 1 Check Points ...
Страница 36: ...36 9 4 CU 4E23LBE 9 4 1 Check Points ...
Страница 67: ...67 19 Technical Data 19 1 Operation Characteristics CU 2E15LBE 19 1 1 One Indoor Unit Operation ...
Страница 68: ...68 ...
Страница 69: ...69 19 1 2 Two Indoor Unit Operation ...
Страница 70: ...70 ...
Страница 71: ...71 19 2 Operation Characteristics CU 2E18LBE 19 2 1 One Indoor Unit Operation ...
Страница 72: ...72 ...
Страница 73: ...73 19 2 2 Two Indoor Unit Operation ...
Страница 74: ...74 ...
Страница 75: ...75 19 3 Operation Characteristics CU 3E18LBE 19 3 1 One Indoor Unit Operation ...
Страница 76: ...76 ...
Страница 77: ...77 ...
Страница 78: ...78 ...
Страница 79: ...79 ...
Страница 80: ...80 ...
Страница 81: ...81 19 3 2 Two Indoor Unit Operation ...
Страница 82: ...82 ...
Страница 83: ...83 ...
Страница 84: ...84 ...
Страница 85: ...85 19 3 3 Three Indoor Unit Operation ...
Страница 86: ...86 ...
Страница 87: ...87 19 4 Operation Characteristics CU 4E23LBE 19 4 1 One Indoor Unit Operation ...
Страница 88: ...88 ...
Страница 89: ...89 ...
Страница 90: ...90 ...
Страница 91: ...91 ...
Страница 92: ...92 ...
Страница 93: ...93 19 4 2 Two Indoor Unit Operation ...
Страница 94: ...94 ...
Страница 95: ...95 19 4 3 Three Indoor Unit Operation ...
Страница 96: ...96 ...
Страница 97: ...97 19 4 4 Four Indoor Unit Operation ...
Страница 98: ...98 ...