35
COMMUNICATION FAILURE
54 4101 Communication loss with Compressor Board A Automatic, if
communication is
re-established
Unit shuts down Bus installation fault or
defective board
55 4201 Communication loss with Compressor Board B As above Unit shuts down As above
56 4301 Communication loss with Compressor Board C As above Unit shuts down As above
57 4901 Communication loss with SIOB Board Number 1 As above Unit shuts down As above
58 4902 Communication loss with SIOB Board Number 2 As above Unit shuts down As above
59 4903 Communication loss with SIOB Board Number 3 As above Unit shuts down As above
60 4904 Communication loss with SIOB Board Number 4 As above Unit shuts down As above
61 4905 Communication loss with SIOB Board Number 5 As above Unit shuts down As above
62 4906 Communication loss with SIOB Board Number 6 As above Unit shuts down As above
63 4501 Communication loss with Fan Board Number 1 As above Circuit A shuts down As above
64 4502 Communication loss with Fan Board Number 2 As above Circuit B shuts down As above
65 4503 Communication loss with Fan Board Number 3 As above Circuit C shuts down As above
66 4801 Communication loss with VLT Board Number 1,
(units w/o option 17)
As above Circuit A shuts down As above
67 4802 Communication loss with VLT Board Number 2,
(units w/o option 17)
As above Circuit B shuts down As above
68 4803 Communication loss with VLT Board Number 3,
(units w/o option 17)
As above Circuit C shuts down As above
69 4704 Loss of communication with Fan VLT Drive Board
A1 (option 17)
As above Circuit A shuts down As above
70 4705 Loss of communication with Fan VLT Drive Board
A2 (option 17)
As above Circuit A shuts down As above
71 4706 Loss of communication with Fan VLT Drive Board
A3 (option 17)
As above Circuit A shuts down As above
72 4707 Loss of communication with Fan VLT Drive Board
B1 (option 17)
As above Circuit B shuts down As above
73 4708 Loss of communication with Fan VLT Drive Board
B2 (option 17)
As above Circuit B shuts down As above
74 4709
Loss of communication with Fan VLT Drive Board
B3 (option 17)
As above Circuit B shuts down As above
PROCESS FAILURE
78 10001 Evaporator frost protection Manual Unit shuts down, but the pump
continues to run
No water ow,
defective thermistor
79
10002 Condenser frost protection, circuit A Automatic
(if saturated discharge
temperature is more
than 4.4°C) or Manual
Circuit A shuts down, but the pump
is running
Discharge pressure
transducer defective,
refrigerant leak or low
condenser water temperature
80
10003 Condenser frost protection, circuit B As above Circuit B shuts down, but the pump
is running
As above
81
10004 Condenser frost protection, circuit C As above Circuit C shuts down, but the pump
is running
As above
82
10005 Low suction temperature, circuit A Automatic (the rst
alarm in the last 24
hours) or Manual
Circuit A shuts down Pressure sensor defective,
EXV blocked or lack of
refrigerant
83
10006 Low suction temperature, circuit B As above Circuit B shuts down As above
84
10007 Low suction temperature, circuit C As above Circuit C shuts down As above
85
10008 High superheat, circuit A Manual Circuit A shuts down As above
86
10009 High superheat, circuit B Manual Circuit B shuts down As above
87
10010 High superheat, circuit C Manual Circuit C shuts down As above
88 10011 Low superheat, circuit A Manual Circuit A shuts down As above
89 10012 Low superheat, circuit B Manual Circuit B shuts down As above
90 10013 Low superheat, circuit C Manual Circuit C shuts down As above
91 10014 Customer safety loop failure Automatic (the rst
alarm in the last 24
hours) or Manual
Unit shuts down Customer interlock closed
92 10028 Electrical box thermostat Automatic Unit shuts down Electrical box fault: Control
box poorly ventilated or poor
electrical connection
93 10029 System manager communication fault Automatic, if
communication is
re-established
Unit returns to the stand-alone
mode
CCN bus installation
defective
94 10030 Master/slave communication failure Automatic Master/slave control disabled As above
110 10031 Emergency stop
Automatic Unit shuts down Network emergency stop
command
111 10032 Evaporator pump 1 fault Manual Unit is restarted with another pump
running. If no pumps are available,
the unit shuts down
Pump overheats or poor
pump connection
112 10033 Evaporator pump 2 fault Manual As above As above
113 10015 Flow controller fault - condenser ow switch failure Automatic (the rst
alarm in the last 24
hours) or Manual
Condenser pump is stopped Condenser ow switch open
114 10034 Reclaim operation failure, circuit A Manual Circuit A returns to the air-cooled
mode
Low condenser ow
115 10035 Reclaim operation failure, circuit B Manual Circuit B returns to the air-cooled
mode
As above
116 10037 High condensing temperature, circuit A Automatic Circuit A shuts down Defective transducer
117 10038 High condensing temperature, circuit B Automatic Circuit B shuts down As above
118 10039 High condensing temperature, circuit C Automatic Circuit C shuts down As above
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