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CHECKING THE POWER DOWN MODULE
TROUBLESHOOTING - Continued
1. Set control switch to UP position.
PLATFORM WILL NOT RAISE
2. Check for battery voltage (12.6 volts DC, or 24.8 volts DC for a 24 volt system) on
white wire (+) connected to Power Down Module terminal #1. If no voltage, check
supply voltage to control switch.
3. Check and verify valve S1 is energized.
4. Check for battery voltage (12.6 volts DC, or 24.8 volts DC for a 24 volt system)
on white wire (+) connected to solenoid switch coil positive terminal. If no voltage,
check wire connection to solenoid. If connection is good, replace Power Down
Module.
POWER DOWN NOT FUNCTIONING, GRAVITY DOWN ONLY,
PLATFORM NOT LOWERING, OR LOWERING TOO SLOWLY
1. Set control switch to DOWN position.
2. Check for battery voltage on black wire (+) (12.6 volts DC, or 24.8 volts DC for a 24
volt system) connected to the Power Down Module terminal #2. If no voltage, check
supply voltage to control switch.
3. Check and verify valve S2 and lock valve are energized.
4. Check for battery voltage on white wire (+) (12.6 volts DC, or 24.8 volts DC for a 24
volt system) connected to solenoid switch coil positive terminal. If no voltage, check
and verify Power Down Module black wire (-) ground connection. Verify solenoid
switch black ground wire (-) is secure. If connections are good, replace Power Down
Module.
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