Is your salt chlorinator showing 0 ppm, a very low salt reading, or no chlorine production? Don't panic. In many cases, the unit is simply in "Standby Mode" or needs a quick flow adjustment.
| Category | Possible Cause | Symptoms | How to Check | Solution |
|---|---|---|---|---|
| Unit Not Fully Powered On | System is in standby mode (not actually running) | App shows 0 ppm; no chlorine production; power light not green | In the app, power icon is white (not blue); power light on unit is red (not green) | In the app, tap the power button (turns blue) and press the physical power button on the unit (turns green). Device only starts detecting and displaying salt readings when powered on. |
| No or Low Water Flow Detected | Pump speed too low / valve not fully open / dirty filter | Flow indicator light flashing; no salt reading | Confirm pump is running; check flow indicator light status | Increase water flow; clean filter; open valves fully; meet minimum flow rate: Horizontal ≥60 L/min, Vertical ≥90 L/min. |
| Flow Switch Blocked by Debris | Flow paddle or impeller blocked by branches, leaves, debris | Flow indicator light flashing; salt reading not updating | Check if flow switch paddle moves freely | Remove debris (leaves, scale, hair, etc.); ensure paddle moves freely; re-test. |
| Incorrect Installation Direction or Orientation | Inlet/outlet reversed / vertical installation with low flow | Flow light flashing; no salt reading | Check body arrow direction; confirm mounting orientation | Reinstall in correct arrow direction; horizontal installation preferred; ensure adequate flow. |
| Salt Recently Added, Not Fully Dissolved | Salt reading delay after addition | Shows 0 ppm or unstable readings after adding salt | Look for undissolved salt crystals in water; confirm time since addition | Run pump continuously for several hours (typically ~24 hrs) before re-checking. |
| Actual Salt Level Too Low | Not enough salt in water | Consistently low or 0 ppm | Test with salt test kit or strips | Add salt to recommended level (e.g., 3000–3500 ppm) and circulate evenly. |
| Startup/Reading Delay | System just started up | Short-term 0 ppm after powering on | Observe for a few minutes after startup | Wait a few minutes; device displays reading after detecting water flow. |
| Cell Scaling | Calcium scale buildup on plates reduces conductivity | Low or inaccurate salt reading; reduced chlorine output | Visually inspect cell plates | Clean cell; set polarity reversal time to 4 hours to reduce scaling. |
| Test Strips Misleading | Oxidizers/chlorine affect strip color | Test strip reading higher than device | Compare strip and device readings | Use device reading as main reference; test strips may show higher values. |
| E2 (Low Salt) Status | Controller detects low salt | E2 displayed; unsure if chlorine is being produced | Check code + observe chlorine production | In E2 state, unit still produces chlorine at about 50% output (reduced but not stopped). |
Use this step-by-step guide to diagnose and fix the issue quickly.
1. The Most Common Cause: Unit Not Fully Powered On
Symptom: App shows 0 ppm; no chlorine production; power light is NOT green.
The Fix: Many users mistake "Standby Mode" for "On."
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Check the App: Look at the power icon. If it is White, the system is in standby. Tap it until it turns Blue.
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Check the Unit: Press the physical power button on the controller until the light turns Green.
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Note: The device only starts detecting and displaying salt readings when fully powered on.
2. Water Flow Issues
Symptom: Flow indicator light is flashing; salt reading is not updating or shows 0.
Possible Causes:
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Low Flow: Pump speed is too low or valves are not fully open.
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Blockage: Debris (leaves, branches, hair) is blocking the flow paddle.
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Wrong Direction: The cell is installed backwards (inlet/outlet reversed).
The Fix:
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Increase Flow: Ensure flow rates meet the minimum: Horizontal ≥60 L/min, Vertical ≥90 L/min.
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Clean Debris: Remove the cell and check if the flow switch paddle moves freely. Remove any trapped debris.
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Check Orientation: Ensure the arrow on the cell body matches the water flow direction.
3. Salt Not Fully Dissolved
Symptom: You just added salt, but the reading is still low or unstable (0 ppm).
The Fix:
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There is a delay between adding salt and the sensor reading it. Undissolved salt crystals sitting on the bottom won't register immediately.
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Wait: Run your pump continuously for 24 hours to allow salt to fully dissolve and mix before re-checking the reading.
4. Cell Scaling (Calcium Buildup)
Symptom: Low or inaccurate salt reading; visible white scale on plates.
The Fix:
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Inspect: Visually inspect the titanium plates inside the cell.
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Clean: If you see white calcium buildup, clean the cell with a mild acid solution (as per manual).
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Prevent: Set the "Polarity Reversal" time to 4 hours in the settings to improve self-cleaning performance.
5. Understanding the "E2" (Low Salt) Status
Symptom: The controller displays "E2".
What it means: The controller detects low salinity. However, in an E2 state, the unit does NOT stop working. It continues to produce chlorine at a reduced rate (approximately 50% output) to protect the cell.
The Fix: Test your water with a separate salt test kit. If salt is truly low, add salt to reach the recommended 3000–3500 ppm range.
Quick Summary Checklist
If you see an abnormal reading, do this first:
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Check Power: Ensure App icon is Blue and Unit light is Green.
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Check Flow: Ensure the Flow light is steady (not flashing).
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Check Debris: Ensure the flow paddle moves freely.
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Wait: If you just added salt, wait 24 hours.
Real Customer Case: We found that 90% of "No Reading" tickets were resolved simply by pressing the power button to exit standby mode, or clearing a small leaf stuck in the flow switch.
