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Form 201.28-NM1.1
Issue date: 08/06/2021
Table 15 - YVAA operational and fault/inhibit codes
NOTES
1
Units have Native BACnet MS/TP, Modbus RTU, and N2 communications. No external Gateway is required for these interfaces unless the customer is using Connected Services.
2
BACnet Object Types: 0 = Analog In, 1 = Analog Out, 2 = Analog Value, 3 = Binary In, 4 = Binary Out, 8 = Device, 15 = Alarm Notification (0-127 are reserved ASHRAE Objects)
3
WC = Inches of water Column, CFM = Cubic Feet per Minute, FPM = Feet Per Minute, PSI = Pounds per Square Inch, Pa = Pascals, kPa = kiloPascals, PPM = Parts Per Million, kJ/kg = kiloJoules per kilogram
4
Values that are not applicable due to unit configuration and options will be sent as zero (0).
5
Modbus values are all of type signed. Scaling values in x10 (Bold) indicate scaling in metric is x100. Scaling and signing may not be modified in the field.
6
7
8
9
10
Code Value
Operational Code
63
Manual Override
64
Daily Schedule Shutdown
65
Unit Switch OFF
66
Remote Controlled Shutdown
Loss of External Communications
67
68
Flow Switch Shutdown
69
VSD Cooling Shutdown
70
Serial Number Shutdown
71
72
Discharge Superheat Recovery
73
No Run Permissive
74
75
Anti-Recycle Timer Active
76
System Switch OFF
System Not Running
77
System Running
78
Discharge Pressure Limiting
79
80
Suction Pressure Limiting
81
Motor Current Limiting
82
Free Cooling
ISN/BAS Motor Current Limiting
83
Remote Motor Current Limiting
84
85
System Shutting Down
86
VSD Pre-Charging
87
VSD Baseplate Temp Limiting
88
VSD Internal Ambient Temp Limiting
89
Sound Limiting
90
ISN Sound Limiting
91
Remote Sound Limiting
92
Pulldown Motor Current Limiting
YVAA YVFA YAGK Native 13 May 21
93
Cooling Demand Shutdown
94
Input Current Limiting
95
ISN Input Current Limiting
96
Remote Input Current Limiting
Pulldown Input Current Limiting
97
98
99
YVAA YVFA YAGK Native 13 May 21
JOHNSON CONTROLS
Code Value
Fault/Inhibit Code
0
No Fault Code
1
Low Ambient Temperature
2
High Ambient Temperature
3
Low Chilled Liquid Temperature
VSD Initialization Failure
4
5
Low RTC Battery Voltage
6
Invalid Number of Compressors Selected
7
VSD Communications Failure
Pre-charge Low DC Bus Voltage (Unit)
8
9
Pre-charge DC Bus Voltage Imbalance (Unit)
10
High DC Bus Voltage (Unit)
Low DC Bus Voltage (Unit)
11
12
DC Bus Voltage Imbalance (Unit)
13
High VSD Ambient Temperature
Single Phase Input (Unit)
14
VSD Power Supply Fault
15
VSD Logic Board Fault
16
17
Motor Current Overload (Hardware)
18
CT Plug Fault
19
High Harmonic Filter Temperature
Evap Anti-Freeze Pump Fault
20
Low Heat Exchanger Temperature
21
22
23
24
25
26
27
High Discharge Pressure (Software)
28
High Differential Oil Pressure
29
Low Differential Oil Pressure
Property of Johnson Controls
30
Low Suction Pressure
Subject to change without notice.
31
High Discharge Temperature
32
33
Eductor Clog Fault
Sensor Failure
34
35
Low Motor Current
36
High Motor Temperature
37
Pre-charge Low DC Bus Voltage (System, Frame E/F)
Pre-charge DC Bus Voltage Imbalance (System, Frame E/F)
38
39
High DC Bus Voltage (System, Frame E/F)
40
Low DC Bus Voltage (System, Frame E/F)
41
DC Bus Voltage Imbalance (System, Frame E/F)
High Motor Current
42
43
Motor Current Overload (Software)
44
IGBT Gate Driver Fault
45
High Baseplate Temperature
Single Phase Input (System, Frame E/F)
46
47
VSD Run Signal Fault
48
High Discharge Pressure (Hardware - HPCO)
49
Low Suction Superheat
Control Voltage Fault
50
Property of Johnson Controls
Subject to change without notice.
SECTION 7 - OPERATION
Code Value
Fault/Inhibit Code (cont.)
51
Low Discharge Superheat
52
Low Suction Pressure Smart Freeze
53
Isolation Valve Failed to Close Warning
54
Isolation Valve Failed to Open Fault
High Discharge Pressure Rate
55
56
Condenser Fan VSD Warning
Code Value
Warning Code
0
No Warning Set
1
Quarterly Service Required - Contact JCI
2
Yearly Service Required - Contact JCI
3
3 Year Service Required - Contact JCI
5 Year Service Required - Contact JCI
4
5
Replace Oil Filter
7
4 o
5 of 5
117
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