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T
HE FOLLOWING CODES WILL BE DISPLAYED AS PART
OF THE NORMAL OPERATION OF THE HEATER:
Operational & Programming Codes
FLO..... No Water Flow Detected. This code appears whenever the circulating pump is off, or when
the heater is not receiving correct water flow.
OFF..... System is Off. This code appears whenever heater has been turned off via the mode
selector button, or when the temperature set point has been lowered below 45
o
F.
CFI...... Celsius/Fahrenheit Selection. This is a programming entry point to select in which format
the water temperature will be displayed.
ULC..... User Lock Code. This is a programming entry point; when activated, steps to the next
menu level: ELC.
ELC..... Enter Lock Code. This a programming entry point; permits end user to select a secret
code, thereby limiting access to the owner settings.
CFO..... Call Flex Options. This is a programming entry point; when used in conjunction with an
AquaCal Call/Flex add on kit, permits the use of CALL or FLEX options.
FS....... Heater in Defrost Mode (Applicable to Heat-Only Units, only). This code appears as a
normal display during periods of lower air temperatures. Sequence follows:
Heat-Only Defrost Sequence: Fan continues to run and compressor is off. Compressor
will restart when air coil temperature rises to approximately 38°F.
LOC..... This is a Service Entry Point (not intended for use by the owner). The[LOC] code permits
service personal to enter a factory code for access to adjustable calibration and site-
dependant setup parameters. Service adjustments are available to authorized installation
and service personnel, only.
HEATER CONTROLS...continued
Failure to heed the following may result in equipment damage
and voiding of manufacturer’s warranty.
CAUTION !
Heat pumps contain no owner-serviceable components. Owner-initiated adjustments, beyond
the controller “LOC” code, must not be attempted. If adjustments are deemed necessary, the
owner should contact installing dealer or AquaCal Customer Support at (800) 786-7751.