Control panel will not power up: When the power switch is pressed, the power light should come on
regardless of the position of the vehicle’s ignition switch. Check for power at the back of the control panel. On
panels that have an ATO fuse at the back of the panel, the power connection (12 VDC positive) will be next to
the fuse. If the fuse is present -check it. The fuse should be rated at 20 amps. If a 20 amp fuse is blown, there
may be an issue that needs resolved. The ground for these panels will be the black wire in the end of the 12 pin
connector. If there is no fuse, the power and ground connector will be a 2 pin connector with a red (12 VDC
positive) and black wire (12 VDC negative or ground). Check across these wires for voltage. If power and
ground is present and the panel will not power up, then the control panel is defective. Locate the part number
from the sticker on the back of the board and call Equalizer for replacement. If there is no power or ground to
the control panel, the source must be located and repaired. On later model year units (after 2006) that have the 2
pin power and ground connector, the power and ground generally comes from the pump assembly. Locate the 2
pin connector at the pump and check the fuse at the pump assembly (if equipped). Check for power and ground
to the pump assembly. On earlier units the power and ground supply may have been supplied from the vehicle
fuse panel or directly from the battery. You will need to trace and locate to determine the issue.
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