Table 14 - Operational And Fault / Inhibit Codes - Quantech QTC4 STYLE A Series Installation Operation & Maintenance

SECTION 7 - OPERATION

TABLE 14 - OPERATIONAL AND FAULT / INHIBIT CODES

Code
QTC4/F A Operational Code
Value
63 Manual Override
64 Daily Schedule Shutdown
65 Unit Switch OFF
66 Remote Controlled Shutdown
67 Loss of External Communications
68 Flow Switch Shutdown
69 VSD Cooling Shutdown
70 Serial Number Shutdown
74 No Run Permissive
75 Anti-Recycle Timer Active
76 System Switch OFF
77 System Not Running
78 System Running
79 Discharge Pressure Limiting
80 Suction Pressure Limiting
81 Motor Current Limiting
82 Free Cooling
83 ISN Motor Current Limiting
84 Remote Motor Current Limiting
85 System Pumping Down
86 VSD PreCharging
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
93 Cooling Demand Shutdown
106
Operational and Fault/Inhibit Codes
OPER.CODE
Code
QTC4 /FA Fault/Inhibit Code
Value
FAULT/INHIBIT.CODE
0 No Fault/Inhibit
1 Low Ambient Temperature
2 High Ambient Temperature
3 Low Chilled Liquid Temperature
4 VSD Initialization Failure
5 Low RTC Battery Voltage
6 Invalid Number of Compressors Selected
7 VSD Communications Failure
8 Pre-charge Low DC Bus Voltage
9 Pre-charge DC Bus Voltage Imbalance
10 High DC Bus Voltage
11 Low DC Bus Voltage
12 DC Bus Voltage Imbalance
13 High VSD Ambient Temperature
14 Single Phase Input
15 VSD Power Supply Fault
16 VSD Logic Board Fault
17 Motor Current Overload (Hardware)
18 CT Plug Fault
27 High Discharge Pressure (Software)
28 High Differential Oil Pressure
29 Low Differential Oil Pressure
30 Low Suction Pressure
31 High Discharge Temperature
33 Eductor Clog Fault
34 Sensor Failure
35 Low Motor Current
36 High Motor Temperature
37 Pre-charge Low DC Bus Voltage
38 Pre-charge DC Bus Voltage Imbalance
39 High DC Bus Voltage
40 Low DC Bus Voltage
41 DC Bus Voltage Imbalance
42 High Motor Current
43 Motor Current Overload (Software)
44 IGBT Gate Driver Fault
45 High Baseplate Temperature
46 Single Phase Input
47 VSD Run Signal Fault
48 High Discharge Press (Hardware – HPCO)
50 Control Voltage Fault
51 Low Discharge Superheat
FORM QTC4-NM1
ISSUE DATE: 4/2/2018
QUANTECH