36
TROUBLESHOOTING
. . .
WARNING . . .
HIGH PANEL VOLTAGE
V POWER POINT = xV
ERR DETECTED! PANEL
OPEN CIRCUIT VOLTAGE
GREATER THAN 150 VDC
MPPT CHARGE DISABLED
BATTERY
= 13.8V
BOOST at
= LOW
PANEL
= 28.0V
OUTPUT POWER = LOW
ERR DETECTED! BATTERY
OPEN CIRCUIT VOLTAGE
GREATER THAN 60vDC
MPPT CHARGE DISABLED
10.
TROUBLESHOOTING
When Problems are experienced with the MPPT’s please refer to this section to confirm the
procedure to follow in order to correct the fault.
10.1 Panel Output Power Low
This would be the general error experienced when
connecting the MPPT.
This fault can be checked through any of the following tests on the MPPT
:
•
Turn off the MPPT Panel breaker and measure the voltage using a multi-meter.
•
Turn on the Panel circuit breaker and confirm if the voltage is immediately dropping to the
battery voltage or if the voltage is slowly decreasing
•
If the voltage is immediately dropping to the battery voltage then the MPPT needs to be
sent to Microcare for repair.
•
If the voltage is not adjusting then you need to open up the MPPT and check the internal
cables to confirm if the circuit breaker attachments are tight.
•
Tighten the circuit breaker internally and externally.
•
If this does not solve the error then you would be required to test your PV Panels
independently to confirm if you have a Panel short circuit that is causing the PV voltage to be
low.
10.2 High Panel Voltage
This error will display when the PV Voltage is exceeding
The ratio between the battery voltage and the
PV Panel Voltage used to charge the batteries.
(Refer to List Below)
Battery Bank Size
PV Panel Voltage (VOC)
12V
48V
24V
96V
36V
135V
48V
135V
Remember that the MPPT will only support a
max of 150VOC per PV array.
10.3 Open Circuit Voltage Higher Than 150 VDC
Your PV Panel array is connected in series and is exceeding
the 150Voc capacity of the MPPT
10.4 Battery Voltage Higher Than 60Vdc
The Battery Voltage is exceeding the supported Voltage range
of the MPPT.
