41Pumped Refrigerant System Operation and Maintenance
CM alarm messages
Alarm
Number Alarm Message Severity Action Required
28 Air Filter Service
Interval Expired (RA
only)
Warning • Clean or replace the air filter
• Reset the alarm.
29 Evaporative Temperature
Below Dewpoint
Critical • Contact Technical Support.
22 Fan 1 Door Open (OA
only)
Critical • Make sure the door is closed.
• Make sure the door interlock switch is connected properly.
17 Fan 1 Fault Warning • Make sure the fan door is fully closed.
• Make sure all intakes are clear of blockage.
• Make sure the fan housing is full installed in the locked position.
• If the problem persists, contact Technical Support.
24 Fan 1 Missing or Wrong
Type (OA only)
Critical • Make sure the fan housing is fully installed and in the locked
position.
• Make sure the fan is set to the correct voltage.
• If the problem persists, contact Technical Support.
23 Fan 2 Door Open (OA
only)
Critical • Make sure the door is closed.
• Make sure the door interlock switch is connected properly.
18 Fan 2 Fault Warning • Make sure the fan door is fully closed.
• Make sure all intakes are clear of blockage.
• Make sure the fan housing is full installed in the locked position.
• If the problem persists, contact Technical Support.
25 Fan 2 Missing or Wrong
Type (OA only)
Critical • Make sure the fan housing is fully installed and in the locked
position.
• Make sure the fan is set to the correct voltage.
• If the problem persists, contact Technical Support.
19 Fan 3 Fault (RA Only) Warning • Make sure all intakes are clear of blockage.
• Make sure the fan housing is full installed in the locked position.
• If the problem persists, contact Technical Support.
20 Fan 4 Fault (RA Only) Warning • Make sure all intakes are clear of blockage.
• Make sure the fan housing is full installed in the locked position.
• If the problem persists, contact Technical Support.
21 Fan 5 Fault (RA Only) Warning • Make sure all intakes are clear of blockage.
• Make sure the fan housing is full installed in the locked position.
• If the problem persists, contact Technical Support.
27 Fan Type Not Configured Critical • Contact Technical Support.
13 Group Communication
Fault
Warning • Confirm that the A-Link cables are connected properly to the A-
Link ports.
• Confirm that the A-Link network has terminators on the first and
the last units in the chain.
• Verify the number of cooling units in the group is correct.
• If the problem persists, contact Technical Support.
8 Liquid Inlet Pressure
Sensor Fault
Critical • Make sure the refrigerant supply pressure sensor is connected
properly.
• If the problem persists, contact Technical Support.
5 Liquid Temperature
Sensor Fault
Critical • Make sure the sensor is connected properly.
• If the problem persists, contact Technical Support.
15 Primary Power Source
Failure
Warning • Make sure the power source is connected properly and is within
specifications.
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