
HPPH Control Display
The HPPH display is viewable from outside of the
heater. All operation and settings of the HPPH control
are accomplished through the use of the 3 buttons of
the user interface. These buttons are labeled as fol-
lows:
• MENU/SET – Scroll through available menus
and set changed values (MENU)
• U – Increase values in the Adjust menu
• DOWN – Decrease values in the Adjust menu
The display uses a 2-line, 16-character backlit Liquid
Crystal isplay (LC ) as the method for supplying
information. The backlight is normally off. The back-
light is on for 15 minutes after Power-Up and for 15
minutes after any button press. Use the LC to setup
and monitor the operation of your heater.
If the membrane switch remains inactive for 180 sec-
onds (3 minutes), the screen will revert to the current
view.
On HEAT/COOL models, the options available by
pressing the MENU/SET (MENU) button are POOL
HEAT, POOL COOL, POOL AUTO, SPA, TIME SPA
and OFF. The cooling setpoint can be adjusted in the
range of 50F to the Cooling eadband value below the
Heating setpoint. This allows use in Plunge Pools.
Adjust the cooling setpoint accordingly.
The control board is equipped with a red status LE
on the back of the board which flashes at a “heartbeat”
of 2Hz while operating normally. The control board is
also equipped with a green LE (next to the commu-
nications jack) on the back of the board which will
flicker to indicate active communications when con-
nected to another system.
Upon initial application of power, the HPPH control
briefly sets all segments on the LC at power-up. On
a normal power-up, the control displays the current
software revision and the model type configuration
(HEAT ONLY, POWER EFROST or HEAT/COOL) on
the LC for 2 seconds and then resumes the user
selected mode it was in before power was interrupted.
The configuration for these units should be
HEAT/COOL.
Setpoints are read from non-volatile memory. If the
self diagnostic check indicates corrupted values,
“EEPROM Fault” is displayed on the LC and opera-
tion is prohibited until setpoints are manually set.
If unit type has not been set (like during the replace-
ment of the HPPH control), the control prompts the
user to set the model type (HEAT ONLY, POWER
EFROST, or HEAT/COOL) before any device opera-
tion is enabled. Installation in these models requires a
model type of HEAT/COOL to be selected.
Upon initial installation, there are several items that
must be defined and programmed depending on the
configuration and accessories intended to be con-
trolled 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 vari-
able speed control), and (3) Auxiliary control (Yes or
No and then what type – External Heat, Auxiliary
Output or Remote Output).
Once these choices are made, then additional infor-
mation relating to the establishing of pump periods,
pump speeds during each period and Return/Suction
Valve positions during each period must be deter-
mined and set in the control.
The options for the control can be very simple or very
detailed, depending upon each installation desires.
Once programming is completed, the control is ready
for operation.
WARNING: Install a check valve and/or a Hartford
loop AFTER the heat pump pool heater and
BEFORE any chlorinating devices. Install any auto-
matic chemical feeders AFTER the heat pump pool
heater. Improper installation of any type of auto-
matic chemical feeders can result in serious
damage to, or premature failure of, the heat
pump pool heater and will void the heat pump
pool heater warranty.
Fig. 4: H H Control Display
10