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16
1 Service
A blank message box is located on the Details Screen. This
box will display various messages detailing the status of the
control module. If a message is present in this box, the
DETAILS button on the Status Screen will contain a yellow
triangle with an exclamation mark (!) inside.
Displayed items are as follows:
• Delta T Shutdown - The temperature rise between the
inlet and outlet temperatures has exceeded 55°F.
Reference page 53 for more information regarding this
shutdown.
• Outlet Temp Shutdown - The outlet temperature has
exceeded 195°F. Reference page 53 for more information
regarding this shutdown.
• Flue Temp Shutdown - The flue temperature has
exceeded 240°F. Reference page 53 for more information
regarding this shutdown.
• Voltage too Low - The 120 VAC input to the control has
dropped below 80 VAC. Reference page 52 for more
information regarding this fault message.
• Connect System Sensor - System sensor is not detected by
Control Module 1. For proper operation of the SYNC
boiler the system sensor must be connected.
• Manual Shutdown - The boiler has been shutdown with
the ON/OFF button on the Status Screen.
Time - The time is displayed in the upper right-hand corner of
the display. It is displayed in 24 hour format. Reference the
night setback parameters on page 24 for information regarding
adjusting the date and time.
Status button - Pressing this button displays the Status Screen.
This screen shows the current status of the SYNC boiler.
Reference pages 13 - 14 for more information regarding this
screen.
Main button - Pressing this button displays the Main Screen.
From this screen, navigation to eight (8) additional screens is
possible. Refer to Main Screen on page 17 for more information
regarding this screen.
Service Manual