Code Description Action Required Default
ELL
Low limit temperature alarm
Alarm – The temperature set point is lower than the
low limit temperature setting. The display alternates
between ELL and the fluid temperature. The unit
continues normal operation. If the fluid temperature
drops below the LL setting, Fault 02 is activated.
Increase heat load or decrease the LL setting.
39°F (4°C)
LO H2O
No fluid flow or pressure
Warning – LO is displayed alternately with H2O and
the fluid temperature. Indicates that the fluid pressure
exceeds the high pressure limit or the fluid flow is
less than the low flow limit. If either error persists,
Fault 07 or 08 will be activated.
N/A
ECC
Error current control
Alarm – The current input is outside 4-20 mA. Pump,
compressor, and fan turn OFF.
Send in-range 4-20 mA input to restart Chiller.
N/A
The following Codes indicate display control status.
Code Description Action Required
LLO
Local lockout
Normal – Indicates that the Local Lockout feature is enabled. Appears
momentarily when the Select/Set Knob is pressed to view/change set
point value. See Enabling/Disabling the Local Lockout.
CAn
Cancel local lockout
Normal – Indicates that the Local Lockout feature has been disabled.
Appears momentarily when Local Lockout status is changed from
enabled (LLO) to disabled. See Enabling/Disabling the Local Lockout.
EC
External remote control active Normal – Chiller is in Standby mode until remotely activated (optional)
Automatic Restart from Alarm Mode
The Chiller is equipped with an automatic restart feature to avoid false or nuisance alarms due to temporary flow
obstructions, temperature swings, or electrical line noise. If any alarm condition is detected, the Chiller will turn
OFF, wait 30 seconds, and turn back ON automatically. If the alarm condition persists after three restart
attempts are made, then an alarm will sound and the Chiller will remain OFF until the problem is corrected.
110-279 33
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