ALWAYS put the PIM400 in LINK mode first. On a PIM400-TD2 press the LINK1 Button for door one, and LINK2 button for door 2. With a PIM400-485 you must use the SUS/HHD to select which door to LINK.
Why press the # key? Because the # key will insure a RF communication start regardless of the keypad buffer setting.
For an AD400 to enter link mode, it must see the RTX (Request To Exit) switch shorted, simultaneous with a card read or keypad # entry, see the LINKING section of the AD400 User guide. AD400 User Guide LINK
On Exit Devices: Because an AD400-993 lock does not have an inside handle, you must use the exit device with the RTX-LC switch installed or you must temporarily short the RTX inputs on the main AD400 PCB during the link process. Request To Exit input can be provided via the pig-tail jumper plug/wire assembly (included), or with a fully installed and working RTX-LC switch in the crash bar assembly.
Caution; DO NOT USE A SCREW DRIVER for shorting the small pins of the RTX connector on the main PCB. These pins are fragile and often bend or are easily damaged!
Caution; After successfully LINKING an AD400-993 using the pigtail, DO NOT leave the shorted pigtail in place or the AD400-993 will attempt to relink every time a card credential is presented or a keypad button is pressed.
3. Check the AA battery level, if the AA batteries are below 4.7 volts the AD400 can fail to LINK.
Install fresh batteries, with a level of 6.0 volts or better.
4. PIM400/AD400 COM400 plug could be damaged!
The small pins in the Main PCB board connection for the RF COMM board can get bent during installation of the RF COM400 board. If the PINs are bent and damaged the COM400 board will not operate correctly.
Verify that all pins in the connector are not bent and are in proper position and that the RF COM400 board is fully seated.
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