d. Without knowledge of the correct lock code, and with the ULC enabled,
control adjustments will not be possible. Be certain to record your loCK
code in a safe place. The lock code may be changed any number of times
by following the instructions detailed in this section.
B. DE-ACTIVATING THE USER LOCK CODE [ULC] FUNCTION:
1) Following the instructions detailed previously at: “8, 6)”, press any key and
enter the user lock code number; then press the [POOL/SPA] key.
2) Immediately following the entry of the user lock code, simultaneously press
and hold the [UP ARROW] and [DOWN ARROW] keys until the code [CF1]
appears on the display.
3) Then, use the [POOL/SPA] key to scroll to the [ULC] message; press the
[DOWN ARROW] key to change the display to “0”. This will disable the
User lock function.
C. USER LOCK CODE IS ACTIVATED, BUT PASS NUMBER IS NOT
KNOWN (“BACK DOOR ENTRY”):
Note: Should the ULC option be enabled, and a lock code number other than
the factory default (0) be installed but is unknown, the following procedure
may be followed to regain controller programming access:
1) Simultaneously press and hold the [POOL/SPA] and [UP ARROW] keys until
the display shows “888”. This operation will reset the controller to the factory
default settings.
2) When reset to the factory default settings the user lock code [ULC] is deacti-
vated and the user lock code number [ELC] is reset to “0.”
3) In addition, all other settings are returned to the factory defaults. If an exter-
nal controller is in use, contact Aquatherm Heat Pumps (888-297-3826); ask
for assistance with re-configuring the controller for use with an external con-
troller.
AT START UP: CONTINUOUS CIRCULATION
PUMP OPERATION REQUIRED
When starting a heat pump for the first time, it must be permitted to operate, continu-
ously, until the desired water temperature is attained. This may take several hours,
to several days, depending upon the size of the pool or spa and weather conditions.
If a time clock or similar device controls the operating times of the water circula-
tion pump, temporarily override the water pump controller, allowing for 24-hour,
continuous water pump operation.
Once the body of water has reached the desired temperature, the water pump
controller can be reset.
Seasonal Use & Shut Down
During Swim Season
• During the swim season, even if the pool or spa is not in use, allow water to
flow through the heater. Doing so eliminates the need to reposition valves
when you do wish to heat the pool or spa.
• During periods when heating or cooling is not desired, leave heater controls
in the OFF position.
Freeze Protection & Extended Shut Down
In areas where freezing conditions are a rare occurrence, allow the filtration system
to run continuously throughout the freeze period. Typically, during light freeze
conditions, circulating (moving) water will not freeze.
In areas where freezing conditions are prevalent and sustained, the heat pump
MUST be winterized; please refer to winterizing instructions, below, and on the
following pages. Failure to properly winterize your heat pump could result in
permanent damage to the unit.
1. Disconnect all electrical power to the heater; turn OFF circulating pump.
2. At the two (2) connection unions, disconnect the plumbing to the heater
(removal is counter- clockwise).
3. If your unit has an external drain plug, remove plug. This plug would be
located at lower, front corner of heater. (position may vary between models).
Allow water to drain out of the condensor. DO NOT replace plug until final
winterizing step.
4. If no external drain plug is found, it will be necessary to open access panel
and see if heat exchanger has an internal drain plug. If so, remove plug, and
allow water to drain out of the condensor.
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