110-392 20
Display, Alarm and Error Messages
When certain conditions are detected, a message code flashes on the display and the local audio alarm sounds.
Depending on the nature of the condition, power to various systems components is removed. When the condition
is rectified, push the front panel Power Button or turn the circuit breaker OFF then ON to clear the fault or error.
Message Code Description Action Required
EFL
Low fluid level warning —
units with fluid level float
switch.
Fluid flow too low
warning — units with flow
switch (PO - no pump – no
reservoir option).
Warning / Alarm — Fluid level or flow switch is open. Alarm will
sound once every 8 seconds for 5 occurrences. If problem has not
been corrected after 40 seconds, Fault 05 occurs.
Add fluid to the reservoir.
EHA
High ambient
temperature warning
Warning / Alarm - The ambient temperature (as measured on the
Control PCB) is higher than the set ambient limit. The display
alternates between EHA and the fluid temperature; the unit continues
normal operation. If the ambient temperature stays over 5°C above
the high ambient limit for more than 5 seconds, Fault 16 occurs.
Lower ambient temperature or raise high ambient temperature limit.
EHL
High limit temperature
alarm
Warning / Alarm — The temperature set point is higher than the high
temperature limit value. The display alternates between EHL and the
fluid temperature; the unit continues normal operation. If the fluid
temperature stays above the HL value for more than 25 seconds,
Fault 03 occurs.
Lower temperature set point or increase high limit value.
ELL
Low temperature limit
alarm
Warning / Alarm — The temperature set point is lower than the low
temperature limit value. The display alternates between ELL and the
fluid temperature; the unit continues normal operation. If the fluid
temperature stays below the LL value for 25 seconds, Fault 02
occurs.
Increase temperature set point or decrease low limit value.
LO-
H2O
No fluid flow and no fluid
pressure
Warning / Alarm — LO is displayed alternately with H2O and fluid
temperature if there is no fluid pressure and the fluid flow is less than
the low flow limit. If both conditions last for 3-4 minutes, Fault 07
alarm will occur and the compressor, heater, fan, and pump are
turned OFF.
LLO
Local Lockout
Normal — Indicates that Local Lockout feature (see Enabling /
Disabling the Local Lockout) is enabled. Appears momentarily when
Select/Set Knob is pressed to view/change set point value.
CAn
Cancel Local Lockout
Normal — Indicates the Local Lockout feature (see Enabling /
Disabling the Local Lockout) has been disabled. Appears
momentarily when Local Lockout status is changed from enabled
(LLO) to disabled.
EC
External remote control
active
Normal — Chiller is in Standby mode until remotely activated
(optional).
EF2
Fluid level in reservoir
low
Warning / Alarm — Units with Dual Float Option only. Indicates that
the fluid level has fallen below the lower float. When the EF2
warning/alarm appears, there will be a short delay and then the
Chiller will turn OFF.
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