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WWSD - Selects the outdoor temperature that shuts
the heater off, no matter what the demand. NOTE: The
WWSD segment will be displayed on the LCD.
Operation
The Raypak modulating temperature control uses a
Liquid Crystal Display (LCD) as a method of supply-
ing information. The LCD is used to setup and monitor
system operation by means of three push buttons
(Item, L and M) shown at the bottom of Fig. 36.
All items displayed by the control are organized into
two menus, the view menu and the adjust menu. The
active menu is displayed in the upper right hand side
of the display in the menu field. The default menu is
the view menu.
When the temperature control is powered up, the con-
trol turns on all segments in the display for 2 seconds,
then the software version is displayed for 2 seconds.
At the end of that 4 second period, the control enters
the normal operating mode and "VIEW" is displayed.
Pressing the scroll button "scrolls" through the dis-
played values in the "VIEW" menu.
Item Field
Number Field
E01
FP
BOIL OUT
BOIL OUT
BOIL IN
BOIL IN
SUP
SUP
OUTDR
OUTDR
DHW
DHW
Table R: Error Codes
Type
Err
Error
Err
Warning
SHr
Error
OPn
Error
SHr
Error
OPn
Error
SHr
Error
OPn
Error
SHr
Error
OPn
Error
SHr
Error
OPn
Error
Item Field
Displays an
abbreviated
name of the
selected item
Modulation
{
Buttons
Selects
Item
Menus,
Items and
adjusts
settings
Fig. 36: Modulating Temperature Control Display
To make an adjustment to a setting in the control,
begin by selecting the "ADJUST" menu. To change
from the view menu to the adjust menu, simultaneous-
ly press and hold all three buttons for 1 second. The
menu name, "ADJUST" will be displayed in the menu
field.
The menu will automatically revert back to the view
menu after 20 seconds of keyboard inactivity. Then
scroll to the desired item using the scroll button. Fi-
nally, use the L or M button to make the adjustment.
In the absence of other information, the values pro-
vided in Table Q should be used as default settings.
35
Fault Description
EEPROM error
Flame proof warning
Boiler outlet sensor short
Boiler outlet sensor open
Boiler inlet sensor short
Boiler inlet sensor open
System sensor short
System sensor open
Outdoor sensor short
Outdoor sensor open
DHW sensor short
DHW sensor open
Menu Field
Displays the current menu
Number Field
Displays the
current value of
the selected
item
DHW
External Input
Offset
Signal
Modulating
Control
Status Field
Displays the
current status
of the control's
inputs, outputs
and operation
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