FAQ

If the total power of the LED strip does not exceed 480W, there are two possible solutions:

The LED strip (24V) needs to be connected to a 24V power supply.

Solution 1: Cut the LED strip into sections, each with a maximum power of 240W, and connect them separately to the two CCT (dual color temperature) channels of the controller.

Solution 2: Switch the color mode to single-address 7c mode, then solder a power wire to the other end of the LED strip and connect it to the other CCT channel of the controller.

Yes, it can. However, if there are too many DALI devices, it’s recommended to separate the DALI bus from high-voltage wiring or to use a shielded 2-core 1.5 mm² cable for better performance.

Yes, it does. The labeled current on the fixture is its rated current. During dimming, the driver adjusts the actual current without exceeding the rated value.

Yes, but it must be connected to either the coldest or warmest color channel only.

High-voltage input fixtures will adjust faster when dimming, and below a certain threshold (around 1%), the input voltage and current may become insufficient to light the fixture.

Set the driver to the lowest current setting, measure the input voltage (U) of the fixture, then use the formula: I = P × Efficiency / U

Possible causes include:

1. Too many branches in the wiring.
2. Excessive cable length causing voltage to drop below 9V.
3. Interference from third-party DALI devices or control panels.
4. The number of DALI devices on the line exceeds the maximum number of devices that can be connected to the system.
5. Incorrect or duplicate address assignments.
6. Driver not compatible with the control system.
Troubleshooting steps:
1. Connect the driver directly to the DALI master terminal.
2. Use a multimeter to measure the DALI bus voltage at the driver.
3. Disconnect third-party DALI devices or panels and test for the driver’s stability.
4. Disconnect the unnecessary DALI devices first.
5. Use the DALI master to assign the address individually or re-search addresses for each device.
6. Send the DALI master back to us for compatibility testing with our drivers.

The user unintentionally set a minimum brightness by holding the “Min.Set” button for three seconds while the brightness was at 100%. To fix this, turn the light on to 100%, then hold the “Min.Set” button for three seconds again to cancel the minimum brightness setting.

1. The power supply’s inrush current at startup was too high, and when multiple fixtures are connected in parallel, it exceeded the MOSFET’s limit, damaging the module.
2. A low power factor (PF) of the power supply distorted the output voltage waveform, causing it to lead or lag beyond the acceptable range for the MOSFET, which led to failure especially under multiple parallel loads.

No. Using a gigabit switch causes the gateway to frequently disconnect. However, it works properly with routers that support 100 Mbps auto-negotiation.

The device is fine and initialized at the factory. The issue lies with the PC software.

This phenomenon is not due to a damaged driver it is caused by overcurrent protection. Open the NFC app to check the target current and the maximum current.

1. The maximum current is lower than the target current (in the new firmware, the maximum current is fixed and cannot be changed).
2. The LED driver has open-circuit protection: when the lamp voltage exceeds the LED driver’s output voltage by 4.5V, open-circuit protection is triggered, causing the light to turn on and then go off.

This is not a fault. When multiple addresses are set on one controller and the addresses are non-sequential, such behavior may occur. Set the addresses in sequential order to resolve the issue.

If the search process stops midway and no devices are listed in the software, it is likely due to an outdated master controller firmware that is incompatible with the PC software.

You need to set the Hardware Error High-End Ratio (‰), Hardware Error Threshold Output Percentage (High/Low), and Hardware Error Low-End Ratio (‰) to their maximum values. If not set, there will be a flash during the dimming process.

Possible reasons for malfunction:
1. The product is damaged.
2. Initialization was not completed.

Brightness inconsistency between lights is due to variations in the minimum brightness of different drivers. Even if the fade time is the same, differing minimum brightness levels will cause visible inconsistencies.

Possible causes for flickering with NFC LED driver:
1. The target current exceeds the lamp’s rated input current.
2. CLO (Constant Lumen Output) is enabled in the NFC app, but the LED driver does not support CLO.
3. Short-circuit or over-temperature protection has been triggered.
4. Initialization issue with the LED driver.

1. Connect the positive output terminal to ground.
2. There may be leakage at the LED strip connection — lift and insulate the connection point. 3. If a faint glow appears only when touching the light fixture with a hand or metal object, but disappears when not touched, this is a normal phenomenon caused by induction. Proper insulation will resolve it.
4. If faint glow appears without physical contact, and the light cannot be turned off, possible causes include:
a. Power supply leakage (product defect).
b. Induced voltage: grounding of LED strip or aluminum profile.
c. Live neutral line (220V): check if the neutral wire is disconnected while the live wire remains connected, or if there’s a short circuit in another electrical device.
d. Add an inductor in parallel to the output (if CCT is not used, you can try connecting only the positive terminal).

Tuya platform device limit: One household can connect up to 195 devices due to Tuya’s platform restrictions.

Only one gateway shows in the Tuya app because all gateways have the same UUID. Due to Tuya’s UUID mechanism, only one instance appears. The UUID needs to be modified by returning the gateway to the manufacturer.

If multiple gateways have duplicate MAC addresses, the following problems may occur: A. Difficulty or failure when adding the gateway. B. All gateways show as online, but none can discover devices. C. Devices from other gateways appear offline and do not come back online automatically.

Yes, the 100W constant voltage strip (50W cold white + 50W warm white) operates as a 50W constant-power variation when adjusting CCT.

1. First, confirm that the programmed firmware supports RGBAF mode.
2. Confirm that the output is set to 5A mode.

If the LED strip remains faintly lit after power-off: There may be contact between a copper pad and metal housing, forming a ground path. Insulate the point of contact or connect the controller’s input negative terminal to ground.

Power-on behavior depends on which components are powered:
1. If only the LED driver is powered on: restores the previous state.
2. If only the gateway is powered on: restores the previous state.
3. If both are powered on at the same time: restores the previous state

When both LED driver and gateway power on simultaneously, the brightness follows the Power-On Level, which is 10%.

1. For Sunricher’s products, when powered on simultaneously, the brightness follows the system failure level.
2. For LTECH’s driver, the brightness follows the previous brightness before power-off.

The devices were tested before leaving the factory but were not reset to factory settings afterward.

Yes, but you must note when ordering: “Program 48V high-frequency firmware.”  The current version does not support 48V by default.

Possible causes include unstable input power, output short circuit, or a faulty product.

Right-click the icon, go to “Properties” → “Compatibility,” and check “Run this program as administrator.”

Try replacing the power supply with a more stable one.

1. The MOSFET may be damaged due to a short circuit or excessive current.
2. The minimum current may be incorrectly set to 100%.

This is due to frequency interactions between the power supply and the controller or between the controller and the lights.

1.5mm² → 300m

1.0mm² → 200m

0.75mm² → 150m

0.5mm² → 100m

Please make sure the maximum current has also been written; if it hasn’t, the target current setting will not take effect.

No, the lights will continuously flicker.

Sunricher DALI drivers follow the DALI-2 standard and support 251, 252, and 253 commands. Please update the software of your DALI master controller.

Yes.
1. The total power of the fixtures must not exceed the driver’s output capacity.
2. The maximum voltage of the fixtures should be at least 2V below the driver’s maximum output voltage.
3. Ensure voltage deviation of the light source is minimal; within ±1V to ±2V. Example: For a 36V light source with a batch variation of ±2V, and 2V voltage drop from the cable, the driver voltage must be at least 40V (36 + 2 + 2).

Yes, but only if it’s the capacitor version. Without a capacitor version, if the cable between the driver/controller and the light is over 2 meters, the DS waveform may distort, potentially causing overheating or equipment failure.

1. Check if the multimeter is faulty.
2. Check if the switching power supply is malfunctioning.

It depends on the load, but starts at 2mA.

If the cable length exceeds 2 meters, the DSP waveform may distort, and the output cable may be connected to another driver.

The mode is not set correctly. The digital display should show “rc”, not “r.c”.

The load is too high, triggering overload protection.

DALI Master requires administrator privileges. Right-click the application, go to “Properties” → “Compatibility”, and check “Run this program as an administrator”.

1. The PC and the gateway are not on the same local area network (LAN);
2. The DALI Center software must be installed on the C drive.

1.First, delete the groups in the app;
2.Then short-press the configuration button 5 times to clear the groups sent by the app.

Because the magnetic track driver’s inductor is positioned near the magnet of the magnetic track light, which generates an induced current. This causes an increase in power consumption and may result in light flicker when turned off.

Both the gateway and controller must be powered on at the same time. The gateway must send data after powering on; do not power on the gateway before the driver or controller.

No. DALI-2 input devices require the DALI master to forward commands. Without the DALI master, commands cannot be transmitted, so DALI-2 devices depend on the DALI master to work.

This occurs due to phase difference caused by live wire being connected across different phases. The relay channels will stick unless the module’s LN power supply and the load are on the same phase, which is required for the zero-cross detection to function effectively.

Use the version of the firmware that improves low-brightness performance without soft-on/soft-off effects.

Yes, but the negative terminals of the CCT driver must be connected in parallel to avoid damage.

1. The DALI signal to the relay is insufficient;
2. Relay contact sticking (mechanical failure).

The SR-2701S-DT7 is powered by the DALI bus. Without a signal, the internal module has no power and cannot execute the system failure brightness setting.

The 0-10V dimming curve is not compatible with the standard DALI logarithmic dimming curve used by the SR-2701S-N.

Possible reasons: 
1. Signal wire short-circuited at the output; 
2. Wires connected incorrectly; 
3. Signal wire insulation is incomplete and may be touching metal structures like a keel, causing grounding issues.

The switching power supply has high ripple. The diffuser film amplifies this flicker, making it visible to the naked eye.

You need to reassign and store the groups and scenes in the SR-2400BRC for the new devices to function properly.

One 24V power supply is not sufficient to power multiple controllers. Add additional 24V power supplies to share the load.

Because the third-party drivers use a linear dimming curve, while the TDA gateway outputs a logarithmic curve. Switch the driver to a logarithmic curve to fix the issue.

No. The PF is >0.9 at full load, but decreases during dimming or under partial load.

Device group assignments remain unchanged after searching. The APP can control lights even when offline. DALI-2 panels are supported. However, sensors are not supported.

The driver sets a thermal protection threshold. If the driver’s internal temperature exceeds this threshold (typically Tc), even if the ambient temperature (Ta) is within range, the driver will reduce power output (dimming the lights) for protection.

Possible reasons: 
1. A gigabit router is being used; 
2. Dual-band Wi-Fi (2.4GHz + 5GHz) is enabled; 
3. The network adapter may need to be disabled for 5 seconds and then re-enabled.

Possible causes:
1. The lights have entered short-circuit or overload protection, possibly due to poor contact, negative wire short, or insulation issues; 
2. LED driver failure.

Possible causes: 
1. The lights have entered short-circuit or overload protection, possibly due to poor contact, negative wire short, or insulation issues; 
2. Power supply failure.

Because both LED drivers are connected to the same LED strip, causing signal interference at non-max brightness.

Possible reasons:
1. Different master controllers result in different control behaviors.
2. The controlled devices may have inconsistent parameters.

No. Variations in output voltage, current, or other parameters can lead to flickering issues.

Hot-plugging (connecting lights while powered on) causes a brief 12V capacitor discharge, which may burn out the LEDs.

1. Use a digital display module to set fixed addresses before system extension.
2. Perform a fresh installation with the DALI master and re-search all driver/controller addresses (initialize the devices).
3. Remove the devices with duplicate addresses, assign fixed addresses individually, then proceed system extension.

Yes, you can. Address reassignment is not necessary—just perform addressing.