Display, Alarm, And Error Messages - PolyScience Refrigerated Recirculating Chillers Operator's Manual

4.8

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,
such as the compressor, heater, fan, and pump, is removed. When condition is rectified, push front
panel Power button or turn circuit breaker off then on to clear the fault or error.
Message
Code
EAF
E C
E
EFL
EHA
EHL
ELL
LLO
CAn
LO-
H2O
Description
Rear panel high ambient
temperature
(select models only)
External remote control active,
Chiller in standby (for units with
remote control by 12 VDC option)
(select models only)
External remote control active,
Chiller in standby
Only appears when Chiller is
-
C
equipped for remote control using
a dry contact)
(select models only)
Low fluid level warning / alarm
(for units with optional float
switch)
(select models only)
Front panel high ambient
temperature warning.
High temperature set point
warning
Low temperature set point
warning
Local Lockout
Cancel Local Lockout
No fluid flow and no fluid
pressure
Warning - The ambient temperature is higher than the
set ambient limit.
Lower ambient temperature.
Normal — Unit idle until remotely activated.
Normal — Unit idle until remotely activated.
Warning/Alarm — Fluid level is too low. An alarm will
sound once every 8 seconds for 5 occurrences. If the
fluid level has not been raised 8 seconds after the fifth
alarm, the unit will shut down.
Warning - The ambient temperature is higher than the
set ambient limit.
Lower ambient temperature or raise temperature limit.
Warning — The temperature set point is higher than
the high temperature limit value. If not corrected, the
high temperature limit alarm will be activated when
fluid temperature rises above established the HL
value.
Lower temperature set point or increase high
temperature limit value.
Warning — The temperature set point is lower than
the low temperature limit value. If not corrected, the
low temperature limit alarm will be activated when
fluid temperature falls below the established LL value.
Increase temperature set point or decrease low
temperature limit value.
Normal — Indicates that Local Lockout feature (see
Section 4.10) is enabled. Appears momentarily when
Select/Set Knob is pressed to view/change set point
value.
Normal — Indicates the Local Lockout feature (see
Section 4.10) has been disabled. Appears
momentarily when Local Lockout status is changed
from enabled (LLO) to disabled.
Warning — Indicates that the Chiller did not detect
any fluid flow or pressure upon startup. Unit will
normally run after 5 minutes after power on.
22
Action Required