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P a g e
MCS – MicroMag Error / Alarm Manual
Version: 02/21/2020
This alarm will trip if the fluid out temperature drops
below the value of Setpoint #86. The chiller will
lockout and all Relay Outputs will be disabled to
avoid damage to the chiller.
Note: Supervisor password (2112) is
required to reset lockouts
Possible Causes
Solutions
Sensor fault on fluid out
See Appendix B to troubleshoot
Setpoint #86 is incorrect
for operating conditions
Change setpoint to a lower value
IMPORTANT!
If supply fluid is water, do NOT change setpoint to a
value lower than 40°F (4.5°C) as the liquid may freeze and cause
severe damage to the chiller!
Ambient temperature is
cold enough to affect
fluid temperatures
Verify insulation thickness is suitable for the lowest ambient
operating temperature
Add more glycol to lower freezing point, and then adjust Setpoint
#86 accordingly
Lack of flow through the
evaporator
Check that all valves are opened and that
there are no blockages or restrictions in the y-
strainer (shown to the right) or process
plumbing
Supply Freeze
MicroMag Alarms
1
.
