Hired-Hand Emergency Back-Up and Alarms: Farm Hand Back Up System - Manual (Page 17)

4801-5048 Farm Hand Back Up 16
11. Error Codes
If your controller is displaying an “E1” or “E2”, etc. the controller has recorded an error.
The controller records errors from sensor reading.
Error Codes for the Farm Hand Back Up System
One Room Operation
Note: If sensor 2 fails, but sensor 1 is still operating normally, then the controller automatically
ignores the defective sensor (sensor 2) and uses sensor 1 (one room operation).
If both sensors fail, it automatically loads a value 0.1ºF greater than the High Limit so you will
get proper ventilation.
Two Room Operation
If either sensor fails, it automatically loads a value 0.1ºF greater than the High Limit so you will
get proper ventilation.
Error Code Description Explanation
E1 Sensor 1 Error
Usually indicates a shorted sensor
wire. Check sensor resistance.
E2
Sensor 2 Error Usually indicates a shorted sensor
wire. Check sensor resistance.
Note: If Sensor 2 is switched
OFF, then this error code is not
active
E3 Sensor 1 and Sensor 2 Sensors 1 and 2 both shorted.