Service Manual
1 Service (continued)
Viewable and changeable control parameters
Status Screen:
When the ON/OFF switch is turned to the ON position, the first screen visible on the LCD display will be the Status Screen. This screen displays the current status of the SYNC boiler. The following items can be viewed or interacted with on the Status Screen:
On/Off button - Pressing this button allows the boiler to be placed in either Manual Shutdown Mode or Standby Mode.
Boiler Status - This line shows the current operating status of the SYNC boiler. Displayed items are as follows:
•Manual Shutdown - The boiler will not respond to either a system call or a hot water generation call.
•Standby - The boiler has not received a system call or hot water generation call.
•SH Call for Heat - The boiler has received a system heat call.
•SH Pump Delay - The boiler has satisfied a system heat call and the boiler pumps are running for a fixed time to remove any residual heat.
•HW Storage - The boiler has received a hot water generation call.
•HW Pump Delay - The boiler has satisfied a hot water generation call and the hot water generator pumps are running for a fixed time to remove any residual heat.
•SH BMS - The boiler has received a call for heat from a
•Service Set Point Met - While in Service Mode, the water temperature at either the outlet sensor or the system sensor has exceeded 185°F.
•HW Outlet Set Point Met - The outlet water temperature has exceeded the HW Generator Set Point parameter.
•OA Shutdown - The outside air temperature has exceeded the Outdoor Shutdown Set Point parameter.
•SH Set Point Met - The water temperature as measured by the system supply sensor has exceeded the User Set Point parameter or if the optional Outdoor Air Sensor was used, the calculated set point based on the Outdoor Reset parameters.
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•Cascade ComError - A communication error has occurred between the Control Module 1 and Control Module 2 or between the Leader and Member boilers.
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