How to Diagnose D2212B RF Trouble Display Receiver Jammed

Overview

New RF Receiver Trouble, Receiver ‘Jammed’

When used with RF Receivers with firmware 9.0 (or later), D2212Bs with revision 3.03 firmware (or later) can display two distinct trouble conditions. The receiver trouble display is expanded to two lines.

Issue

RCVR # TROUBLE 2111

# is the receiver number (7 or 8).

RCVR # TROUBLE 1211

# is the receiver number (7 or 8).

Solution

2111 in the second line indicates that no sensor has been heard from in a calculated interval. The interval depends on the number of sensors in the system.

1211 in the second line indicates that the receiver is in a ‘jammed’ condition. Interference is at a level that prevents sensor transmissions from being received.