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38VMA Series
Carrier 38VMA Series User Manual
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3
8VM
H072
-
432
Outdoor Uni
t for
V
ariabl
e Refrigerant Flow (VRF)
Heat
Pump
Sy
stem
Service Manual
Manufacturer r
eserves the right to dis
continue, or change at an
y time,
specif
ications or des
igns withou
t notice an
d without inc
urring obli
gations.
Catalog N
o. 17
-
38V
MH001
-
06
Printed in
U.S.A.
Form 38V
MH
-
1S
M
Pg 1
10
-
17
Re
places: NEW
2
Table of Contents
Table of Contents
2
General Information
4
Model Number Nomenclature
4
Capacity Range
5
Outdoor Units Lineup
6
Indoor Units Lineup
6
Combination Table
7
Refrigerant Charge Calculation
7
Refrigerant Circuit
8
Refrigerant Circuit Diagram
8
Functional Parts Layout
11
Refrigerant Flow for each Operational Mode
13
38Vma072, 096, 120Hds
13
38Vma144Hds
17
Function and Control
21
Operation Mode
21
Basic Control
22
Normal Operation
22
Capacity Calculation
22
Compressor Control
26
Compressor Operating Priority
26
Electronic Expansion Valve Control
28
Cooling Electronic Expansion Valve Control
28
Heating Electronic Expansion Valve Control
28
Fan Control
29
Cooling Fan Control
30
Fan Control Process
30
Heating Fan Control
30
Special Control
31
Startup Control
31
Oil Return Operation
31
Overload Control
33
Stopping Operation
33
Protection Control
35
High Pressure Protection Control
35
Low Pressure Protection Control
35
Discharge Pipe Protection Control
35
Inverter Protection Control
36
Inverter Overcurrent Protection Control
36
Inverter Fin Temperature Control
36
Other Control
37
Outdoor Unit Rotation
37
Sequence of Outdoor Unit Rotation
37
Timing of Outdoor Unit Rotation
37
Cooling Operation Prohibition
37
Heating Operation Prohibition
37
Field Settings
38
Instruction on Advanced Operation Mode
39
How to Set Advanced Mode Codes
39
Instruction for Advanced Mode
40
Refrigerant Recycling Operation
41
Snow-Blowing Function
41
Troubleshooting
42
0E0: Communication Fault between Odus
43
0E2: Communication Error between ODU and IDU
44
0E4: T3 or T4 Temperature Sensor Error
45
0E5: Voltage Protection
46
0E8: Incorrect ODU Address
47
20HO 10H0: Communication Error between Main Control Board Chip and Compressor Drive Chip
47
0H1: Communication Error between Main Control Chip and Communication Chip
48
0H2~0H3: Incorrect Number of Odus
48
0H7: Incorrect Number of Idus
49
0H8: High Pressure Sensor Error
50
0Hb: Low Pressure Sensor Error
51
10F1 20F1: PTC Error
52
0F3~0F5: Temperature Sensor Error
53
0F6: Electronic Expansion Valve Error
54
10Hd 20Hd: Follower Unit Error
54
0P1: Current Leakage Error
55
0P1: Discharge Temperature Switch or High Pressure Protection
56
0P2 0H5: Low Pressure Protection
57
0P3: over Current Protection for Compressor
58
0P4 0H6: Discharge Temperature Protection
59
0P5: High Temperature Protection for Pipe Temperature
60
0H9 0P9: DC Fan Protection
61
Suitable for the Model 38VMA***HDS5-1
62
Suitable for the Model 38VMA***HDS6-1
64
0C7 0PL: High Module Temperature Protection
66
L0~L9 10H4 / 20H4: Compressor INV Module Protection
68
Error Display
68
Applicable Models
68
Error Definition
69
Possible Causes
69
Atl: Ambient Temperature Limit Operation
76
Appendix
77
Wiring Diagram
77
Electronic Control Box Layout
81
High Pressure Sensor Voltage Characteristics
91
Bill of Material (BOM)
92
Vma072Hds5-1, 38Vma096Hds5-1, 38Vma120Hds5-1
92
Vma144Hds5-1
97
Vma072Hds6-1, 38Vma096Hds6-1, 38Vma120Hds6-1
103
Vma144Hds6-1
108
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Carrier 38VMA Series Specifications
General
Brand
Carrier
Model
38VMA Series
Category
Air Conditioner
Language
English
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