The D4412/D6412 reports Data Bus Tamper Device 50 or 51 while the RF3224 cover is in place.

[#1]

• The Wall Tamper Jumper is in the Enabled Position (not covering both pins) and the Wall Tamper on the back of the RF3224 is not closed. 
• The Wall Tamper must be satisfied to clear the trouble.  Either install a spring to contact the wall and close the wall tamper switch or place the tamper jumper across both pins to select disabled.