ARTC-SVX007A-EN
71
Table 21. Chiller / Compressor alarms / Faults listing (continued)
Code
Description
Reset
(a)
Period
(b)
Start-up
(c)
Steady
(d)
Active
in Off
(e)
Alarm
Relay
(f)
Warning
Relay
(g)
Compressors
(h)
a4N TC4 ANC - SCR Temperature -1 0 0 0 X X -
a4O TC4 ANC - Super Heat -1 0 0 0 X X -
A92 Evaporator low flow rate alarm 5 60 5 5 X INTERLOCK
A94 Condenser low flow rate alarm 5 60 5 5 X -
A95 Master connection lost -1 0 15 0 X -
N01 Network Error -1 90 60 60 X -
N02 Master Error -1 90 60 60 X -
N03 Alarm Node 1 -1 90 60 0 X X -
N04 Alarm Node 2 -1 90 60 0 X X -
N05 Alarm Node 3 -1 90 60 0 X X -
N06 Alarm Node 4 -1 90 60 0 X X -
A01 General alarm -1 60 5 1 X X -
S01 Ambient Temp Sensor Fault -1 60 5 5 X X -
S02 Free Cool LW Temp Sensor Fault -1 60 5 5 X X -
S03 Evap DP Sensor Fault -1 60 5 5 X X -
S04 Cond DP Sensor Fault -1 60 5 5 X X -
PF1 Chiller Pump 1 Fault -1 60 5 1 X X -
PF3 Condenser Pump 1 Fault -1 60 5 1 X X -
PA1 Chiller Pump 1 Flow Alarm -1 60 5 5 X X -
PA3 Condenser Pump 1 Flow Alarm -1 60 5 5 X X -
PF2 Chiller Pump 2 Fault -1 60 5 1 X X -
PF4 Condenser Pump 2 Fault -1 60 5 1 X X -
PA2 Chiller Pump 2 Flow Alarm -1 60 5 5 X X -
PA4 Condenser Pump 2 Flow Alarm -1 60 5 5 X X -
TF1 Cooling Tower Fault -1 60 5 1 X X -
S05 Wet Bulb Temp Sensor Fault -1 60 5 5 X X -
(a)
Reset – type of the alarm / fault reset:
• “– 1”. Automatic – when the alarm occurs the reset is done automatically if the alarm conditions no longer persist.
• “0”. Manual – when the alarm occurs, the reset has to be done compulsorily by the user (maintainer or service) by pressing a key combination on the user interface.
• “>0”. Semiautomatic – alarm is automatically reset for the "Reset" number of attempts in the specified "Period" of time, but if the alarms occur one more time, it becomes
Manual.
(b)
Period – is the period of time where the alarm can occur for "Reset" number of times (minutes) with the automatic reset and without becoming manual.
(c)
Startup – is the delay (second) in the alarm during the startup phase.
(d)
Steady – is the delay (second) in the alarm during the steady phase.
(e)
Active in Off – if this box is checked the alarm will be enabled even if the machine is in OFF condition.
(f)
Alarm Relay – if this box is checked, when the alarm occurs the corresponding digital output (configured in the “Digital Output” tab as "Alarm") will be activated.
(g)
Warning Relay – if this box is checked, when the alarm occurs the corresponding digital output (configured in the “Digital Output” tab as "Warning") will be activated.
(h)
Compressors – with this column there is the possibility to stop/run for security reasons the compressors when the alarm occurs. There are two options:
• OFF – when alarm / fault occurs compressors stop.
• INTERLOCK – when alarm / fault occurs compressors lock out.
Note: For a complete list of compressor, motor and bearing
faults:https://files.danfoss.com/download/Drives/
Service%20Manual%20(M-SV-001-EN%20Rev.%
20E).pdf
Chiller Troubleshooting
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