McQuay WGS190AW User Manual

66 WGS 130A to 190A OM WGS-5
The most recent fault code shall be stored in the alarm log parameter list. The fault reset
signal is sent to the starter when the operator clears the active alarm on the unit controller.
The starter fault codes and their corresponding alarms are shown in the table below:
Table 21, Starter Fault Codes
Fault Code Starter Fault Description Alarm Triggered
00 No Fault N/a
01 UTS Time Limit Expired No Starter Transition
02 Motor Thermal Overload Trip Compressor Current Overload Trip
10 Phase Rotation Error, not ABC Phase Reversal
12 Low Line Frequency Starter Fault
13 High Line Frequency Starter Fault
15 Input power not three phase Phase Loss
21 Low Line L1-L2 Voltage Undervoltage
22 Low Line L2-L3 Voltage Undervoltage
23 Low Line L3-L1 Voltage Undervoltage
24 High Line L1-L2 Voltage Overvoltage
25 High Line L2-L3 Voltage Overvoltage
26 High Line L3-L1 Voltage Overvoltage
27 Phase Loss Phase Loss
28 No Line Voltage Undervoltage
30 Instantaneous Overcurrent Compressor Current Overload Trip
31 Overcurrent Compressor Current Overload Trip
37 Current Imbalance Motor Current Imbalance
38 Ground Fault Ground Fault Protection
39 No Current at Run Low Motor Current
40 Shorted/Open SCR Starter Fault
47 Stack Protection Fault Starter Fault
48 Bypass Contactor Fault (on Stop Input) No Starter Transition
50 Control Power Low Starter Fault
51 Current Sensor Offset Error Starter Fault
52 Burden Switch Error Starter Fault
60 Thermistor Trip (on DIN#1) High Motor Temperature
61 Stack OT Switch Trip (on DIN#2) Starter Fault
71 Analog Input Trip Starter Fault
82 Modbus Timeout
Starter Fault (detected by circuit
controller)
94 CPU Error – Software Fault Starter Fault
95 CPU Error – Parameter Storage Fault Starter Fault
96 CPU Error – Illegal Instruction Trap Starter Fault
97 CPU Error – Software Watchdog Fault Starter Fault
98 CPU Error – Spurious Attempt Starter Fault
99 CPU Error – Program Storage Fault Starter Fault
If a starter fault is active and the active alarms are cleared at the unit controller, the clear
alarm signal will also be sent to the starter to clear the alarm status in the starter.
Loss of Starter Comm
If starter communication is lost for 10 seconds while the circuit is in a state other than Off or
there is a start request, then the Starter Fault alarm will be triggered. Without
communication, the fault code cannot be read from the starter so the code 82 will be
automatically logged with the alarm.
Condenser Fan Control
Condenser fan control from the MicroTech II controller is used only for air-cooled
condenser operation. Head pressure control, as part of the condenser, can be used instead.

McQuay WGS190AW Specifications

General

Brand	McQuay
Model	WGS190AW
Category	Chiller
Language	English