Set up your E.W.A.
Connect your water analysis module in minutes. Follow the steps below for your variant.
Supported variants
Identify your variant
Determine which E.W.A. variant you have: Balboa, Gecko V2, Gecko V3, or 220V Standalone. The variant is printed on the label of the module. If you purchased E.W.A. together with Spapilot, the variant is listed in your order confirmation.
Not sure? Check the label on the back of the E.W.A. module or contact support@zavepower.com with your order number.
Connect the sensor probe
Thread the sensor probe into your spa plumbing at the designated sensor port, typically located near the filter housing or circulation pump. Hand-tighten the probe fitting — do not overtighten. Ensure the probe is fully submerged in the water flow path.
The probe must be in direct contact with circulating water to measure accurately. Avoid dead-end fittings.
Connect the E.W.A. module to power
Place the E.W.A. module inside the equipment compartment in a dry, elevated position. Connect the module to power using the supplied cable. For 220V Standalone variants, connect to a dedicated 220V outlet. For Balboa and Gecko variants, connect via the supplied auxiliary cable.
Keep the module away from direct water spray and heat sources. The status LED should illuminate solid after power connection.
Pair with the Spapilot app or use standalone mode
If you have a Spapilot device, open the Spapilot app and navigate to Settings, then Add Device, and select E.W.A. Follow the on-screen pairing instructions. If you are using E.W.A. without Spapilot, hold the pairing button for 5 seconds to activate standalone mode — the LED will blink twice to confirm.
Pairing requires both the Spapilot device and the E.W.A. module to be powered on and within 5 metres of each other during setup.
Auto-calibrate within 24 hours
Once powered and connected, the E.W.A. sensor begins an automatic calibration cycle. During this period the LED pulses slowly. Do not remove or adjust the probe during calibration. After calibration completes, the LED turns solid and readings become available.
Calibration accuracy improves if the spa water chemistry is balanced before setup. Ideal pH: 7.2–7.6, ORP: 650–750 mV.
Monitor pH, ORP, and temperature
Once calibrated, the E.W.A. module reports pH, ORP (oxidation-reduction potential), and water temperature in real time. In the Spapilot app, find these readings under the Water Quality tab. In standalone mode, readings are accessible via the E.W.A. companion app or the local web interface at ewa.local.
Set alerts in the app so you are notified when pH or ORP moves outside your preferred range. Recommended pH: 7.2–7.6, ORP: 650–750 mV.
Setup complete
Your E.W.A. is now monitoring your water quality. If you need help at any step, contact our support team.