Why is my BCDC flashing all LEDs two times?
This information is applicable to the following BCDC Chargers:
- BCDC Classic Under Bonnet 25A DC Battery Charger (BCDC1225D)
- BCDC Classic Under Bonnet 40A DC Battery Charger (BCDC1240D)
- BCDC Classic Under Bonnet 50A DC Battery Charger (BCDC1250D)
- BCDC Core In-Cabin 25A DC Battery Charger (BCDCN1225)
- BCDC Core In-Cabin 25A DC Battery Charger (BCDCN1240)
- BCDC Trailer - 12A DC Trailer Battery Charger (BCDC1212T)
- BCDC Trailer S – 12A Vehicle to Trailer Charger with Solar (BCDC1212S)
WHAT DOES THIS LOOK LIKE?
The BCDC will exhibit a sequence where all seven LEDs located on the display panel flash simultaneously two times, followed by a 3.5 second pause before the cycle repeats.
WHAT DOES ALL LED'S FLASHING 2 TIMES MEAN?
This fault indicates that the BCDC has detected that the charger unit is exposed to low temperature and is below the minimum operating temperature.
WHAT IS THE OPERATING TEMPERATURE RANGE FOR BCDC CLASIC, CORE AND TRAILER MODELS?
This temperature fault condition is relative to the charge profile set on the charger.
See charge profile temperature specifications below.
WILL THE BCDC STILL CHARGE MY BATTERY IN THIS CONDITION?
The BCDC will not provide charge when it is exposed to temperatures below the minimum operating range. The BCDC will resume charging once within normal operating temperature.
WHAT CAN CAUSE THIS FAULT MODE?
COLD/FREEZING CLIMATE
In very cold climates, temperatures can drop below the safe and recommended temperature range to charge a battery. Once temperatures fall below this range, the BCDC will stop charging the battery to protect the battery.
INTERNAL TEMPERATURE SENSOR
These sensors are reliable and it’s extremely rare to see failures in the field. If your BCDC is exposed to temperatures within the normal operating range, isn’t charging and presents the 2 flash fault, there could either be a wiring issue present or an issue with the internal temperature sensor.
HOW TO DETERMINE THE CAUSE OF ALL LED'S FLASHING TWO TIMES?
To determine the cause of this short circuit, it will require diagnostic testing. REDARC recommends seeking the support of an installer.
Below is a list of the common causes and repairs.
A) CHECK AMBIENT/UNIT TEMPERATURE
Note: You will need a temperature measurement tool and multimeter to conduct required testing.
Is the outside temperature and BCDC unit temperature within the BCDC operating temperature range?
No - Wait until temperature is within normal operating range and recheck operation.
Yes – Check wiring to BCDC, ensure good power supply.
B) TEMPERATURE IS WITHIN NORMAL OPERATING RANGE
Once it’s determined that the BCDC is within normal operating range but continuing to present the 2x flash fault condition, follow these steps:
- Ensure the wiring to the BCDC is satisfactory.
- Check fuse protection and ensure the power supply is stable.
- Reassemble and re-check operation.
Note: If all the checks are satisfactory and the BCDC is still presenting the 2x flash fault, it could result in a faulty temperature sensor inside the BCDC.
C) WHAT DO I DO IF I DETERMINED IT'S A FAULTY TEMPERATURE SENSOR?
The BCDC’s internal temperature sensor is not a serviceable part.
Check to see if your BCDC is within product warranty.
In Warranty - Consult your supplier for warranty claim.
Outside Warranty – Replace the BCDC.