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Kelly KellyAug 19, 2025
Why does my Stanley ST-70TW-KFA-E shut off after a short time and shows error code E1?
- JJohn HarperAug 19, 2025
If your Stanley Heater fires but then shuts off, and the LED display shows “E1”, it could be due to several reasons. First, the pump pressure might be incorrect and needs adjustment. Second, the input, output, or lint filter might be dirty and require cleaning or replacement. Third, the fuel filter or nozzle could be dirty and need cleaning or replacement. The photocell lens may also be dirty, improperly installed, or defective, requiring cleaning, adjustment, or replacement. Finally, there might be an improper electrical connection between the Main PCB and Photocell, so check the wiring connections.