Model La412U - Chamberlain LA500U Troubleshooting Manual

MODEL LA412U

SYMPTOM: Operator does not have power.
3
Check the control board.*
Try replacing the fuse.
If that does not work, replace
the control board.
Check the batteries.*
2
Check the battery connections. Make sure there is one 7AH battery,
two 7AH batteries wired in paralllel, OR one 33AH battery connected.
Check the voltage coming from each battery by disconnecting the battery
from the operator. A fully charged battery should read 12.8 to 13.3 Vdc per
battery. If not, replace the batteries.
CONTROL BOARD
J15 Plug
20A 20A
Battery
12V 7AH
Red
Battery
Black
12V 7AH
POWER
CONTROL BOX
CONTROL BOARD
Check the solar panels.*
1
Check the voltage coming from
the solar panels (red and black
wires on the J15 plug labeled
"DC POWER"). Check the voltage
when the panel is in full sun.
The voltage should be
12 Vdc (+/- 10%).
If not, refer to the Solar
Troubleshooting section.
Diode
Solar Panels
10W minimum - 30W maximum, wired in parallel
10W 12V
Black
Red
22
*
10W 12V 10W 12V