CINDER 40 PWM Charge Controller User Manual
Zamp Solar
9) Troubleshooting
Battery Removal Procedure
If you are going to remove your battery during a period of very low Solar Input (i.e.
nighttime, inside a shop with no lighting, etc.) you must also remove the solar panel input. If
you remove the battery input and leave a weak solar input, the controller will consider its
power source too variable and enter a shutdown state. This can be remedied by removing the
solar input and re-attaching the battery input.
If you are removing your battery with plenty of solar input (i.e. any condition where the
sun is present) you may disconnect your battery freely without removing the solar input. It is
important that you reconnect the battery before the sun goes down to avoid exposing the
controller to very weak solar input.
Controller “blinking orange and green”
If you are looking at the front face of your CINDER 40 Charge controller during dusk or
dawn, you may observe that the battery status light is switching quickly between green and
orange. This may look like an error, but it is not. The two colors of the LED represent 2
charging states that are being encountered quickly due to the behavior of the charger.
Orange occurs when the device enters Bulk mode in an attempt to charge using the
available sun. Since the sun is weak during dusk and dawn, there is not sufficient current to
cause the device to continue charging and thus it enters an idle state which is represented by
a green color on the battery status LED. Since the solar controller always wants to be in a
charging mode, the device will then reattempt charging and the LED will turn orange again
and begin the cycle all over. This orange-green LED blinking is normal controller behavior
and nothing to worry about.
Controller is “buzzing” and making noise
You may notice that the Cinder 40 occasionally makes a buzzing noise during
charging. This is normal. This buzzing will typically only occur during Float/Absorption modes
and indicates that the charger is limiting the current to your battery as it proceeds through
its normal three stage charging process.
Controller is blinking orange on the battery status LED and not charging a battery
This blinking orange on the battery status LED indicates that the device is in the RV-C
disable state. Please go to Settings->Device Enable and select “Enabled” under the “Device
Enable State” field to re-enable your controller and resume charging.
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