Errors

• - select type -
• Evolution EVS-1000
• Evolution EVS-1500
• Evolution EVS-2000
• Evolution EVS-2000S
• Evolution EVS-2500
• Evolution EVS-3000
• Evolution EVS-500
• Evolution EVS-750

• - select code -
• Comm Failure
• FSG Fault
• Fuel Limit
• High Temp Limit
• Inlet Temp Fail
• Low Air Flow
• Low Inlet Temp
• Low Water Flow
• Low Water Level
• Memory Failure
• OA Temp Fail
• Off Switch
• Outlet Temp Fail
• Remote Input Fail
• Remote Temp Fail

Boiler type Evolution EVS-750

Error code Low Air Flow

Cause:

Low Air Flow or Blocked Vent Switch Not Made The air flow (and blocked vent switch when installed) is preventing a boiler start. If terminal (CA) does not receive power and the Call For Heat output (CH) is powered, the “Low Air Flow” Message is displayed.

Solution:

Check Combustion Air Blower and Air Pressure Switch Settings and Wiring