Fault 1: The thermostat does not turn on (the screen does not display)
Analyze the causes
1. Wrong wiring;
2. The voltage of the input terminal is not enough or the input terminal is damaged by the empty leakage guarantee;
3. Whether the cable between the panel and the power board is broken or plugged incorrectly;
4. Load short circuit or open circuit, probe line leakage;
5. For other reasons, return to the factory for analysis and solution.
Resolution
1. Check whether the thermostat wiring is correct when the power is off (the middle AC220V corresponds to the input neutral line of fire);
2. Check whether there is a 220V voltage between the input terminals L and N of the thermostat (note that it is not enough to use a pen to measure the power of the live wire, but also to ensure that the neutral line is powered);
3. Open the thermostat panel, check whether the cable is disconnected, and check whether the cable is plugged in reverse or obliquely;
4. Remove the output load line and remove the outer probe line;
5. After completing the above steps 1-4, power on again and observe whether the thermostat is on, if not, the thermostat needs to be returned to the factory for analysis.
Fault 2: Thermostat flashes (normal boot, reboot repeatedly)
Analyze the causes
1. Wrong wiring;
2. The input terminal is not enough to open and leak and protect the belt load;
3. Load short circuit or open circuit, probe line leakage;
4. For other reasons, return to the factory for analysis and solution.
Resolution
1. Check whether the thermostat wiring is correct when the power is off (the middle AC220V corresponds to the input neutral line of fire);
2. Replace the input line;
3. Remove the output load line and remove the outer probe line;
4. After completing the above 1-3 steps, power on again and observe whether the thermostat is on.
Fault 3: The thermostat is missing, the keys are not easy to use, and the backlight is bright and not displayed
Analyze the causes
1. The single-chip microcomputer crashes;
2. Other problems, return to the factory for analysis and solution.
Resolution
1. Enter the background to restore the factory settings in the shutdown state, if there is a password, you need to crack the password first and then restore the factory settings;
2. Other problems, return to the factory for analysis and solution.
Fault 4: The display is normal and not heated
Resolution
1. Remove the load line, restore the factory settings, turn on and off the relay in the background of the thermostat, pay attention to whether there is a relay action, if there is no action, return to the factory for analysis, if there is an action, enter the next step;
2. After setting the temperature greater than (measurement temperature + tolerance temperature), whether the thermostat has a heating mark (if there is a next step, if there is no return to the factory for analysis), measure whether there is a voltage between the zero live wire at the output end of the thermostat, if there is a voltage, it is judged that the front end of the thermostat is empty open and load or the rear end load problem; If there is no voltage, it needs to be returned to the factory for analysis.
Fault 5: The thermostat is locked
Resolution
1. No password, press and hold the power button to unlock;
2. If you have a password, enter the password to unlock, if you forget the password, you need to press the setting key on the password page, and provide the 6-digit prompt password to the manufacturer, and the manufacturer will feedback the password.
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