Product Manual
7
Troubleshooting
Dry Contact Relay
• If the load exceeds the continuous rating for too long a period, the internal tem-
perature sensor will cause the unit to stop boosting the input voltage until the unit
has cooled down. After the unit has cooled down, normal operation will resume.
• If the input voltage drops below the specied minimum input, the unit will sound
the alarm.
• If the output voltage drops below the specied minimum, the unit will sound the
alarm.
• If the current demanded by the devices connected to the unit exceed the maximum
current rating, the fuse will blow.
• If the fuse blows with no load connected, check that the power leads are con-
nected to the battery with the correct polarity; if they are then the unit is damaged
and must be returned for repair.
To use your dry contact output fail relay you must connect a 9-pin D connector to the unit. You
must use pins one and six as is indicated on page 7 in the remote connector diagram.
The relay is factory preset to fail in the closed position when the low output LED and buzzer
come on. If you wish to have the relay fail in the open position when the low output LED and
buzzer come on, you must take the cover off the unit and move the jumper to the other posi-
tion on J11. J11 is located next to the relay.
To change the position of the jumper, rst turn the unit off and disconnect the unit from both
the input and output power. Next, turn the unit on for 30 seconds to discharge the capacitors,
then turn it off again. Remove the six screws. Turn the unit upside down, and remove the
cover and locate J11. It will be next to the relay as is shown in the above diagram. Simply
move the jumper to the desired position as is shown in the above diagram. Replace the cover
and re-install the six screws. Reconnect the unit to the input and output power.