68
ED 15117
Clearing Alarms - L
ON
W
ORKS
This read/write network variable clears all active alarms. The following alarms cannot be cleared over
the network. They can only be cleared at the chiller (i.e. via the unit controller OITS panel).
Low Evaporator Pressure
High Condenser Pressure (by pressure sensor)
High Condenser Pressure (by pressure switch)
Freeze Protection
High Motor Temperature
In addition to the Current Alarm network variable, nvoChillerStat indicates whether or not the chiller is
in an alarm condition, but it does not describe the alarm condition.
Measurement
Units
Data Type
Valid Range
Default Value
N/A N/A Structure
See
Below
N/A
Variable Details
L
ON
W
ORKS
Name
Profile
SNVT Type
SNVT Index
SNVT Size
nviClearAlarm
McQuayChiller
SNVT_switch
95
two bytes
Valid Range
State
Value
Clear Alarm
0 unused
No
Alarm
1 unused
Clear
Alarm
L
ON
W
ORKS
Alarm Messages
Table 9. L
ON
W
ORKS
Alarm Messages
Alarm
Number
Alarm Message Text
Alarm
Number
Alarm Message Text
Warnings
1 Cmp1SoftwareProbWarn 8
ChillerLiqLn1RefTempSenWarn
5 ChillerEvapEntTempSenWarn
9 ChillerLiqLn2RefTempSenWarn
6 ChillerCondEntTempSenWarn
10 ChillerSoftwareProbWarn
7 ChillerCondLvgTempSenWarn
Problems
11 Cmp1LoEvapPressInhibitLoading 28
ChillerEvapPmp2Flt
12 Cmp1EvapFreezeProtect
29 ChillerCondPmp1Flt
13 Cmp1CondFreezeProtect
30 ChillerCondPmp2Flt
14 Cmp1HiDischTemp
31 ChillerEvapEntWtrTempSenFlt
27 ChillerEvapPmp1Flt
Faults
32
Cmp1LowEvapPress
65 Cmp1VFDInputPhaseLoss
33 Cmp1HiCondPress
66 Cmp1VFDOutputPhaseLoss
34
Cmp1Tmr Exp No Strt
67
Cmp1VFDHiTempSide1
35 Cmp1LowMotorCurrent
68 Cmp1VFDHiTempSide2
36 Cmp1HiDischTemp
69 Cmp1VFD IGBT FltBridge1
37 Cmp1MechHiPress
70 Cmp1VFD
IGBT
FltBridge2
38 Cmp1HiMotorTemp
71 Cmp1VFD IGBT FltChopper1
39 Cmp1HiMotorGapTemp
72 Cmp1VFD IGBT FltChopper2
40 Cmp1LoRotorPumpSuperHt
73 Cmp1VFDTherm1Flt
41 Cmp1SurgeTemp
74 Cmp1VFDTherm2Flt
42 Cmp1SurgeSwitch
75 Cmp1VFDTherm3Flt
43 Cmp1MotorStartFailure
76 Cmp1VFDTherm4Flt
44 Cmp1NoCmpStop
77 Cmp1VFDHiPwrSupTemp
45 Cmp1VFDFault
78 Cmp1VFDHiPwrSupVolt
46 Cmp1VFDRefFault
79 Cmp1VFDClgFanFlt
47 Cmp1VFDLossofMotorSync
80 Cmp1VFDProcessorFlt
48 Cmp1VFDMotorStall
81 Cmp1VFDMaintenanceMode
