3
Troubleshooting
38
Service Manual
Table 9
(continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Boiler Interface
FAULT
DESCRIPTION
CORRECTIVE ACTION
Temp O/Shoot
(continued)
(will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
SMART SYSTEM display
to reset.)
Outlet water temperature has exceeded the
maximum outlet water temperature.
• Verify that the boiler pump is set to the proper speed
or that the boiler pump is the proper size. Reference
Section 6 - Hydronic Piping of the Knight Boiler
Installation and Operation Manual for boiler pump
specifications.
• Replace the main control board.
Rem Ctrl Flt
External control is cycling too often.
• Check set point of the external control.
• Check the wiring between the external control and the
unit.
• Replace the control.
Parameters
Progr
(will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
SMART SYSTEM display
to reset.)
After downloading parameters from a laptop,
the main control board must be reset.
• Press the ENTER/RESET button on the SMART
SYSTEM display panel.
