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Display
E1
E2
EP
EE
CL
Error Message
Appears when either the up or
downkey is pressed when not in the
programming mode.
Appears if the control settings are
not properly stored in memory.
Appears when the probe is open,
shorted or sensing a temperature
that is out of range.
Appears if the EPROM dada has
been corrupted.
Appears if calibration mode has
been entered.
To Correct
If the E1 message appears even when
no keys are being pressed, replace
control.
Check all settings and correct if
necessary.
Check to see if the sensed temperature
is out of range. If not, check for
probe damage by comparing it to a
known ambient temperature between
-30°F and 220°F. Replace the probe if
necessary.
This condition cannot be field
repaired. Replace the control.
Remove power to the control for at
least five seconds. Reapply power. If
the CL message still appeared, replace
the control.
troubleshooting/
maintenance
Maintenance
Your Prime Chiller, if installed correctly, should provide years of service with a minimal
amount of maintenance.
For proper maintenance:
1. Clean the condenser (radiator) fins regularly. Using a vacuum and soft brush attachment,
remove lint, dust and animal fur at least once a month to allow for optimal heat removal and to
prevent the compressor and electrical components from overheating. It is also recommended
once every 3 months to remove the cover and clean the condenser fins on the inside of the
unit where the fan is located. Debris can migrate inside of the unit where it may not be able
to be reached from the outside.
2. Periodically inspect all fittings for leakage. Although most aquarists typically do inspect all
their fittings once in a while, it is important to inspect the fittings attached to the chiller
as leaking water (particularly salt water) can damage the components of the chiller if not
discovered.
3. Periodically flush the evaporator. The refrigerant coils inside the evaporator housing can trap
organic debris as well as become coated with mineral deposits such as calcium (especially
with saltwater reef systems). It is recommended that the chiller be removed from service once
a year and the evaporator flushed with freshwater. In addition, circulating a diluted hard
water stain remover through the evaporator will help remove deposits that can affect the
chiller’s performance. Be sure to rinse well with freshwater and let dry before re-installing
the chiller on your system.
