Franklin Smart Controller: red light codes
Count the red flashes or beeps. Each count means something different.
For the STP-SCI box that runs a Franklin submersible pump.
To silence it
- A short press of the reset button silences the beeper.
Not here? Send it with your request.
Red light codes
| On the screen | What it means | What to do | Manual |
|---|---|---|---|
1 red flash | The pump is using too little power. Often it’s running dry.More on this alarm | Low on fuel? Get a delivery. If not, call a tech. | 223987101, p. 11 |
2 red flashes | The incoming voltage is low. It clears when power is normal. | Call a tech. | 223987101, p. 13 |
3 red flashes | The pump is using too much power. Often the motor is jammed. | Call a tech. | 223987101, p. 15 |
4 red flashes | The pump draws no power: a broken wire or relay, or a hot motor. | Call a tech. | 223987101, p. 17 |
8 red flashes | The controller was never calibrated. | Call a tech. | 223987101, p. 20 |
9 red flashes | The pump ran 60 minutes with no change in power. | Call a tech. | 223987101, p. 21 |
10 red flashes | The pump is running with no call for fuel. A relay may be stuck. | Call a tech. | 223987101, p. 22 |
Good to know
- Green: power is on. Flashing green: the pump is running.
Need a tech?
One request. Up to 4 licensed techs call.
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Sources: Franklin Fueling Systems 223987101, r6 (2018).
Rows checked against the manual October 18, 2026.
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