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High Pressure Switch Lockout
If the high pressure switch opens, the control de-energizes
the compressor output and the fan continues to run for 15
minutes after the HPS opened and the display will show
"Hi Press Trip". If the high pressure switch trips 7 times
in a single cycle, the display will show "Hi Press Lockout"
and the unit will be locked out of operation for 4 hours. The
unit will automatically reset after 4 hours or the lockout
can be manually reset by pressing the MENU button or
cycling the power. The high pressure switch must close
for 3 seconds for the control to recognize it as closed.
Low Pressure Switch Lockout
The control ignores an open low pressure switch for the
first 30 seconds after the compressor is energized. If the
low pressure switch opens for 3+ seconds any time after
this 30 second period, the compressor will shut down
and "Lo Press Trip" will show on the display. If the low
pressure switch trips 6 times in a single cycle, the display
will show "Lo Press Lockout" and the unit will be locked
out of operation for 4 hours. The unit will automatically
reset after 4 hours or the lockout can be manually reset by
cycling the power. The low pressure switch must close for
3 seconds for the control to recognize it as closed.
Water Pressure Switch
The control monitors the water pressure switch (or flow
switch - if so equipped). If the pump has run for 3+ seconds,
there is a demand for compressor and the water pressure
switch is open, the control will prevent the compressor
from running and show "Water PS Open" on the display.
The water pressure switch is checked to ensure that it is
open BEFORE allowing the 3-way valves to switch. This
ensures that the pump is OFF before trying to change the
3-way valve positions.
Sequence of Operation
1. Upon initial application of power, the heater control
briefly sets all segments on the LCD at power-up.
2. The control displays the current software revision
and the model type configuration on the LCD for 2
seconds and then resumes the user selected mode
it was in before power was interrupted.
3. Setpoints are read from non-volatile memory.
the checksum of the setpoints indicates corrupted
values, "EEPROM Fault" is displayed on the LCD
and operation is inhibited until setpoints are manually
set.
4. If unit type has not been set (like during the
replacement of the heater control), the control
prompts the user to set the model type before any
device operation is enabled.
5. Upon initial installation, there are several items that
must be defined and programmed depending on
the configuration and accessories intended to be
controlled by the heater control. These include: (1)
3-way valve control (Yes or No), (2) Pump control
(Yes or No and then what type of control – 4-speed
control or variable-speed control), (3) Auxiliary
control (Yes or No and then what type – External
Heat, Auxiliary Output or Remote Output).
6. Once these choices are made, then additional
information relating to the establishing of pump
periods, pumps speed during each period and
Return/Suction Valve positions during each period
must be determined and set in the control.
7. The options for the control can be very simple or
quite complicated, depending upon the needs of the
installation.
8. Once programming is completed, the control is ready
for operation.
9. The user may select "ON" for several operating
modes depending on the unit type.
is selected by pressing the MENU button to cycle
between the modes.
button selects the next mode. There is no automatic
increment from continually pressing the MENU
button.
In fact, continually pressing the MENU
button (for 3+ seconds) will move the user into the
USER Menu.
10. Mode Selection:
•
For HEAT ONLY and POWER DEFROST
models, the mode selections are OFF – POOL
HEAT – SPA – TIMED SPA.
•
For HEAT/COOL models, the mode selections
are OFF – POOL COOL – POOL HEAT – POOL
AUTO – SPA – TIMED SPA.
11. REMOTE Mode is accessed by pressing and holding
the UP and DOWN buttons simultaneously for 3
seconds.
When exiting the REMOTE mode, the
control always selects the OFF Mode.
12. If the UP, DOWN or MENU buttons are pressed while
in REMOTE mode, the display will read "Exit Remote
Mode to Adjust Temp". Mode and temperature
setpoints are not changed.
13. Press and hold the UP and DOWN buttons for 3
If
seconds to exit REMOTE Mode.
14. When operating, the unit will continue to operate until
the water temperature is 0.5°F (0.3°C) above/below
setpoint (below for cooling), until a defrost condition
is needed or the unit is manually turned off.
15. The unit will remain in standby waiting for the next
demand.
Each mode
Each press of the MENU
33
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