PolyScience LS Series User Manual

Display, Error and Fault Messages
When certain conditions are detected, message codes flash on the display. Depending on the nature of the
condition, power to various systems components is removed. When the condition is rectified, press the front
panel Power button or turn power switch/circuit breaker Off then On to clear the fault or error.
Message Code Description Action Required
EHL
E-HI
Error High
Limit
Error — The set point temperature has been set higher than the high limit
temperature.
Chiller Operation — Chiller continues normal operation; display alternates between
EHL, E-HI and the fluid temperature.
Action — Decrease set point temperature or increase high limit temperature.
FHL
Fault High
Limit
Fault — The fluid temperature has exceeded the high limit temperature for more
than 25 seconds.
Chiller Operation — Normal operation stops, with heating and cooling turned off and
the pump remaining on. FHL displayed continuously.
Action — Correct high fluid temperature problem or increase high limit temperature.
(Power to the unit must be turned Off before making adjustment).
ELL
E-LO
Error Low
Limit
Error — The set point temperature has been set lower than the low limit
temperature.
Chiller Operation — Chiller continues normal operation; display alternates between
ELL, E-LO and the fluid temperature.
Action — Increase set point temperature or decrease low limit temperature.
FLL
Fault Low
Limit
Fault — The fluid temperature has been below the low limit temperature for more
than 25 seconds.
Chiller Operation — Normal operation stops, with heating and cooling turned off and
the pump remaining on. FLL displayed continuously.
Action — Correct low fluid temperature problem or decrease low limit temperature.
(Power to the unit must be turned Off before making adjustment).
EFL
Fluid Low
Error
Error — Fluid flow is low.
Chiller Operation — Chiller continues normal operation; display alternates between
EFL and the fluid temperature.
Action — Add fluid to the reservoir; check fluid lines for restrictions and correct as
required.
FFL
Fluid Flow
Fault
Fault — The fluid flow has been low for more than 20 seconds.
Chiller Operation — Normal operation stops, with heating, cooling, and pump turned
off. FFL displayed continuously.
Action — Add fluid to the reservoir; check fluid lines for restrictions and correct as
required. (Power to the unit must be turned Off before making adjustment).
Ft3
Fault 3
Fault — One or all instrument settings are out of range.
Chiller Operation — Normal operation stops, with heating, cooling, and pump turned
off. Ft3 displayed continuously.
Action — Contact manufacturer
FOt
Fault OTP
Fault — Heater over-temperature fault.
Chiller Operation — Normal operation stops, with heating, cooling, and pump turned
off. FOt displayed continuously.
Action — Contact manufacturer.
Ft5
Fault 5
Fault — Heater Triac failure.
Chiller Operation — Normal operation stops, with heating, cooling, and pump turned
off. Ft5 displayed continuously.
Action — Contact manufacturer.
Ft7
Temperature
Probe Fault
Fault — The main temperature probe has failed.
Chiller Operation — Normal operation stops, with heating, cooling, and pump turned
off. Ft7 displayed continuously.
Action — Contact manufacturer.
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PolyScience LS Series Specifications

General

Brand	PolyScience
Model	LS Series
Category	Chiller
Language	English