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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 HPPH 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. If
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 HPPH 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 HPPH 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.
outputs will not change until there is an active request
for them to be in a different state.
The rating of the control contacts is 0.75A at 24VAC
maximum.
WARNING: If the Spa heating (in a pool/spa
system) is controlled by an external controller, 3-way
valves MAY need to be manually adjusted in order to
use the TIMED SPA feature of this HPPH. Failure
to properly adjust the 3-way valves may result in
overheating of the pool water or other undesirable
results.
Battery Back-up
The control is equipped with a battery to maintain con-
trol settings through power outages. This is located on
the upper right rear corner of the control. Replace as
necessary with a BR2032, 3V battery.
High Water Temperature Limit
The control is equipped with a high water temperature
limit which will shut off operation of the compressor
if either water temperature sensor reads at or above
108°F (41°C). The display will read “Hi Water Temp”.
The compressor will remain locked out until both sen-
sors are below 103°F (40°C) and the user presses the
UP button. The high temperature limit is active in all
modes of operation.
High Pressure Switch Lockout
If the high pressure switch opens, the control de-en-
ergizes 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 dis-
play. 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 con-
trol to recognize it as closed.
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