P
pambatesAug 5, 2025
How to fix SA Instruments Farm Equipment heater blowing cold air?
- UubaileyAug 5, 2025
If the SA Instruments Farm Equipment heater system is blowing cold air, there are several potential causes. First, verify that the set point is higher than the measured temperature. Second, check that the power to the Heater Module is on—a green LED indicates power, and you should also check the AC connection. Finally, ensure the control signal is present: if the power indication is OK but the Heat LED isn't flashing, check the fiber optic connection to the Heater Module, looking for a red light at the fiber end. Also, check the temperature probe, set point, and connections at the ERT Control/Gating Module, and confirm that 'On/Off with PWM Max Heat' is selected in the HEATER window.