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8.3. Module Replacement
1. Shutdown the Charger by opening AC Input, DC Output, and Battery breaker if provided. This
will eliminate all power to the module.
2.
Remove the two screws on each side of the module.
3. Using the handle pull the module out until you can grab onto each side to remove the module.
4. Carefully insert the replacement module with both hands. You should feel the rear connector
engage.
5. Make sure that the module is fully inserted, and the module front is flush to the side rails.
6. Install two mounting screws one on each side. There is not much force required, do not exceed
20 in-lbs.
7. Restart the Charger by closing the AC Input, DC Output, and Battery breaker if provided.
8.4. Display PCB Replacement
The Display PC board utilizes a removable Micro SD memory
card contains the specific setup for the unit. The system will
not operate if this card is not present. The memory card is
used to transfer configurations and setting during a field
replacement of the Display board. This card should never be
removed or replaced while power is applied to the system. To
remove the Micro SD, push to release.
1. Shutdown the Charger per 4.4. Power Off procedure
2. Disconnect the connectors from the PC board.
3. Remove the screws holding the board to the door and
remove the PC board.
4. Remove the MicroSD card from the old board and place it in the replacement PC board.
5. Install the new Display PC Board using the screws and connect cable to the board.
6. Start the Charger per 4.3. Start-up procedure.
7. The Display will indicate the configuration memories do not match. Select the Back-up Memory.
8.5. Troubleshooting
As an aid in troubleshooting the unit, the following list of problems and possible causes is suggested as a
guide. Before attempting to troubleshoot any problem, record all system parameters and indicator
status. If a problem falls outside of this list or is not cured by taking the appropriate action mentioned
below, the factory should be consulted for additional help.
8.5.1. DC Voltage not adjustable
1. Communications failure between Display and Module(s); Replace Display
2. Charger in Current limit, Module DC OK LED flashing: Reduce output current
8.5.2. No Output Voltage and/or Current
1. Open AC Input breaker: reset breaker. If trips again check High Output voltage
2. Open Output Fuse or Breaker: Replace fuse with same type or reset breaker.
3. Module(s) shut down due to over voltage or over current, cycle AC Power.
Ascend Single Phase Charger Operation Manual
49
95-100167 Rev A
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