110-240 21
Message Code Description Action Required
EHL
High temperature set point
warning
Warning — 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. The high
temperature limit alarm will be activated if the fluid temperature
exceeds the HL value for 25 consecutive seconds.
Lower temperature set point or increase high limit value.
ELL
Low temperature set point
warning
Warning — 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. The low
temperature limit alarm will be activated if the fluid temperature
exceeds the LL value for 25 consecutive seconds.
Increase temperature set point or decrease low limit value.
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.
LO-
H2O
No fluid flow and no fluid
pressure
Warning — LO is displayed alternately with H2O and fluid
temperature if the fluid pressure exceeds the high pressure limit or if
the fluid flow is less than the low flow limit. If either error lasts for
more than 10 seconds, Fault 8 or Fault 7 (respectively) occurs.
If a fault should occur, the left display will show Ft, and the right display will show one of the fault codes shown
below.
Fault Code Description Action Required
01
Factory reserved None.
02
Low limit temperature
alarm
Alarm — Process fluid temperature is below the low temperature
limit value for more than 25 seconds. Compressor, heater, and fan
are turned off; pump remains on.
To clear the fault, turn the unit off then on using the panel power
button, and decrease the LL value.
03
High limit temperature
alarm
Alarm — Process fluid temperature is above the high temperature
limit value for more than 25 seconds. Compressor, heater, and fan
are turned off; pump remains on.
To clear the fault, turn the unit off then on using the panel power
button, and increase the HL value.
04
Over-temperature
protection alarm
Alarm — Process fluid temperature is above Chiller’s factory set high
temperature safety cutoff. Heater, compressor, and fan turned off;
pump remains on.
Lower process temperature.
05
Low liquid level alarm
(select models only)
Delayed Alarm — Activated when the liquid level in the reservoir falls
below an acceptable level for over 40 seconds. Compressor, heater,
fan, and pump are turned off.
Add fluid to reservoir.
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