AHRI 9350HC, Installation & Operating Instructions Manual

Page: 18 / 40

18
Control Settings
The user can access these control settings by press-
ing and holding the MENU button for 5+ seconds. Any
changes to values are stored into the non-volatile
memory when the MENU button is pressed – which
also toggles to the next setting. Failure to press any
buttons for 60 seconds will cause the screen to revert
back to its previous operating mode screen. However,
the user mode can also be exited by pressing and
holding the MENU button for 5+ seconds.
Set Current Time
This allows setting of the current time. The time is fol-
lowed by an “A” or “P” for AM and PM respectfully. The
control has a 24-hour time clock – although it is NOT
a 7-day time clock. The time clock is used for control
of the pump periods.
C/F Display
This setting is used to define the units of measure for
all temperature readings. Fahrenheit is the default
value. You can change the setting to Celsius by tog-
gling the UP or DOWN button and then pressing mode
to lock in the change.
Spa Max Temp
This setting is used to define the maximum tempera-
ture that the control can be set at for the Spa
operation. The range is 65F – 104F. The default value
is 104F.
Pool Max Temp
This setting is used to define the maximum tempera-
ture that the control can be set at for the Pool
operation. The range is 65F – 95F. The default value
is 95F.
Pump Periods
When the Pump Operation in the Installer’s Menu is
set to “4-Speed Enabled” or “Variable Enabled”, this
allows the setting of Pump Periods from this menu.
When setting this parameter, the control displays
“Pump Periods” on the first line of the display. The
number of pump periods (0 – 4) is displayed on the
center of the 2
nd
line. Pressing the UP or DOWN but-
tons increments/decrements the number of pump
periods – factory default is 1. If a non-zero number of
pump periods is selected when the MENU button is
pressed, the control will prompt for On/Off times for
each of the selected number of pump periods.
Temperature Control
The control uses the appropriate Pool or Spa setpoint
as selected in the Operating mode. The heat demand
begins when the water temperature is 0.5F or more
colder (or 0.5F or more hotter in cooling mode) than
the setpoint.
Additional Features
Pump Control
The control is equipped to control the system pump
(particularly if it is a Raypak VSP pump). The control
provides for an output for a single speed pump (0.75A
@ 24VAC maximum) as well as an output for a vari-
able speed pump (10mA @12 VDC). Four signals are
provided for selection of 4 discrete speeds for a vari-
able speed pump. The control can be configured to
provide a PWM signal on the speed1 output. The con-
trol will energize the pump at the requested speed for
each of the pump periods set in the program mode. If
a heat pump demand is present during a scheduled
pump operation, the pump runs at the override speed
(Speed 1) regardless of the scheduled speed. When
the pump is active because of scheduled operation
and there is no active heat demand, the control sets
the 3-ways valve outputs to the states set in the pro-
gram mode schedule.
Low Ambient (Outside) Lockout
The control is equipped with a Low Ambient Lockout
feature which will prevent the start of a new cycle if the
ambient temperature is lower than the programmed
value. This feature is accessed through the
Installer/Service Sub-menu as noted in Table D, page
17. The default value is “OFF”, but the temperature
can be adjusted between 30F and 50F. This feature
can be enabled if it is desired to not operate the unit if
the temperature falls below this value. NOTE: This
feature will NOT stop the operation of an existing
cycle, it will only prevent operation of a new cycle.
An open outdoor temperature sensor (display will read
“Air Temp -46F”) will trigger an “Outside Lockout” error
if the Low Ambient lockout is enabled. An open or
shorted (display will read “Air Temp 282F”) outdoor
temperature sensor will also cause the control to shut
off the compressor regardless of if the Low Ambient
lockout is enabled.
Control Lock Box Mode
The control is equipped with a Control Lockout feature
which is accessed by pressing and holding the MENU
and DOWN buttons for 5 seconds. The user will be
prompted to enter a 3-digit code. A cursor flashes
under each digit in the 3 digit code when that digit is
NOTE: See Table E on page 26 for Operational
Status Messages that you may see during normal
operation.