The following signs could be indications that a driver has failed or reached the end of its useful life:

1. The light output has noticeably dropped.
2. The light is flickering or flashing.
3. There is no light output and the wiring is correct & AC power is turned-on.  

To determine a replacement driver, you will need to gather the information below on the existing driver. Much of this information can be found on the label of the driver to be replaced. Here is the information you will need:

1. The luminaire type (indoor, outdoor, industrial (high bay) or downlight)
2. The mains power (should be on the driver label)
3. The dimming interface
4. Output current (check label)
5. Output voltage of the driver (take highest number)
6. If the existing driver is a class 2 driver or not
7. Constant current or constant voltage
8. Physical size of the driver that is being replaced
9. If it is a downlight, is it a bottom entry or side entry connection?

To determine a replacement driver, you will need to gather the information below on the existing driver. Much of this information can be found on the label of the driver to be replaced.  Here is the information you will need:

1. The luminaire type (indoor, outdoor, industrial (high bay) or downlight)
2. The mains power (should be on the driver label)
3. The dimming interface
4. Output current (check label)
5. Output voltage of the driver (take highest number)
6. If the existing driver is a class 2 driver or not
7. Constant current or constant voltage
8. Physical size of the driver that is being replaced
9. If it is a downlight, is it a bottom entry or side entry connection?

To get started in determining the replacement driver, please follow the steps below:

1. Try to determine the type of luminaire it is: indoor, outdoor, industrial (high bay) or downlight
2. Ask the customer to send a picture of the driver AND the label.  OR
3. Go back to the original luminaire manufacturer and ask for replacement driver information for the specific luminaire.

When replacing a driver, it is important to know if the original driver is a class 2 or non-class 2 driver.

• Class 2: Driver meets the limitations of < 100W and  < 60V and has gone through additional verification during the agency certification to conform to Class 2 requirements

• Non-Class 2 (also sometimes referred to as Class 1): Class 1 drivers have higher wattage and/or higher voltage than class 2 drivers

RULE: you must replace a class 2 driver with another class 2 driver.

To determine which type of driver you have, please refer to the list below:

• The driver will typically state if it is constant current or voltage or will state CC or CV, either on the product label or the datasheet

• If the driver specifies only one value for output voltage, it is a constant voltage driver (typically 24V or 12V). The LED module used with such a driver would usually call out this same voltage as an input specification, and usually also specifies a power rating. 

• If the driver specifies a range of output voltage (and either a single value or a range of output current) then, it is a constant current driver.

Generally most manufacturers indicate whether the driver is a Constant Current (CC) driver or a Constant Voltage (CV) driver on the product label or the datasheet. 

It is important to replace a failed driver with a driver of equal or lesser output current.  To determine the output current:

• If it is an Advance driver, the current can be read with MultiOne program and programming tool (LCN9620)

• If it is not an Advance driver, contact the original luminaire manufacturer

Three most commonly used types of dimming are:

1. 0-10V dimming

2. Phase-cut (Leading Edge, Trailing Edge)

3. DALI

Refer to the dimmer on the wall. Go to the website for the specific dimmer and determine what type of dimming it supports:

1. 0-10V dimming

2. Phase-cut (Leading Edge, Trailing Edge)

3. TRIAC

4. DALI

5. D4i

6. DMX

When replacing a driver that uses dimming, it is important to replace it with a driver that has compatible dimming characteristics.  First determine the following:

1. Does the installed luminaire use dimming? If not, it does not matter whether you use a dimmable or a non-dimmable driver, as long as the output voltage, current & power of the new driver are matched with the range of the driver being replaced. 

2. Determine type of dimmer being used (e.g. 0-10V, leading edge, trailing edge, TRIAC, Dali, D4i, DMX).

3. Choose a driver with compatible dimming

To program an Advance driver, you will need:

• LCN9620 NFC SimpleSet programming tool (part #929000999506) and 

• MultiOne application which can be downloaded here OR

• The MultiOne Mobile app which is available via the Google Play store (it is only available for Android phones). Please search for 'Signify MultiOne Mobile'. 

• Advance Express training document found here