- Popular Questions and Solutions
- ZOYI device does not turn on
- Measurement values appear inaccurate
- Auto range or intelligent mode does not work correctly
- Bluetooth connection or app pairing fails (model-dependent)
- Display freezes or responds slowly
- Clamp or probe readings fluctuate
- Cannot measure live circuits safely
- Battery drains quickly
- ⚠️ Important
Popular Questions and Solutions
This page answers the most common questions related to ZOYI measuring instruments and their use in electrical and electronic diagnostics.
ZOYI device does not turn on
Problem:
The device does not power on or the display remains blank.
Solutions:
- Check the battery level or battery installation
- Charge the device using a standard USB power source (if rechargeable)
- Make sure the power button is pressed correctly and held long enough
- Allow the device to charge for several minutes and try again
- Replace batteries if the model uses removable cells
Measurement values appear inaccurate
Problem:
Voltage, current, resistance, or other measured values seem incorrect.
Solutions:
- Ensure the circuit is completely powered off (unless live measurement is supported)
- Verify that the correct measurement mode is selected
- Check test leads, probes, or clamps for damage
- Avoid touching measurement points with your fingers
- Remove the component from the circuit if in-circuit results are unstable
Auto range or intelligent mode does not work correctly
Problem:
The device does not automatically select the correct measurement range.
Solutions:
- Confirm that auto range mode is enabled
- Switch to manual range selection if available
- Make sure the input signal is within the supported measurement range
- Reset or restart the device
Bluetooth connection or app pairing fails (model-dependent)
Problem:
The device cannot connect to the mobile application.
Solutions:
- Confirm that the model supports Bluetooth connectivity
- Enable Bluetooth on both the device and mobile phone
- Keep the device within close range during pairing
- Restart the device and the mobile application
- Check for firmware or app updates
Display freezes or responds slowly
Problem:
The screen updates slowly or stops responding.
Solutions:
- Restart the device
- Recharge or replace the battery
- Avoid operating the device in extreme temperatures
- Reset the device if supported
Clamp or probe readings fluctuate
Problem:
Current or voltage readings are unstable.
Solutions:
- Ensure proper clamp positioning around a single conductor
- Avoid nearby magnetic interference
- Keep test leads firmly connected
- Inspect probes or clamp jaws for contamination or damage
Cannot measure live circuits safely
Problem:
The device does not operate correctly on live circuits.
Solutions:
- Verify that the device is rated for live measurements
- Stay within voltage and current limits specified by the manufacturer
- Use proper safety-rated probes and accessories
- Never exceed the maximum input ratings
Battery drains quickly
Problem:
The device loses power faster than expected.
Solutions:
- Fully charge the battery before use
- Disable Bluetooth or backlight when not needed
- Reduce screen brightness if adjustable
- Power off the device when not in use
⚠️ Important
ZOYI measuring instruments include both standalone and app-enabled devices, depending on the model.
Always follow safety instructions provided in the user manual.
Do not exceed rated voltage or current limits.
Perform measurements on powered-off circuits whenever possible.
Using the device outside its intended range may result in inaccurate readings or equipment damage.
ZOYI measuring tools are designed for reliable, accurate, and professional diagnostics when used correctly.