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-2000

Error code Inlet Temp Fail

Cause:

Boiler Inlet Temperature Sensor Fail The boiler inlet temperature sensor is not connected or is reading above or below a valid range. When the boiler inlet sensor fails, the mixing valve output will drive to 0% and low temperature alarm and maximum water differential (boiler outlet minus boiler inlet) temperature hold are disabled.

Solution:

Check Wiring and Sensor