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Trouble Conditions (cont’d)

Rcvr Jam Wireless part of the system is experiencing

(or CHECK

90) RF interference which may prevent reception from

wireless sensors.**

MODEM COMM Indicates that the control is on-line with

the Central Monitoring Station's or your

(or CC) installer’s remote computer.

The control will not operate while on-line. Wait a few

minutes — the display should disappear.

BELL FAILURE Indicates that the wiring connection to the external

sounder

(or CHECK 70) is at fault (open or shorted). Accompanied by

“beeping” at the keypad. CALL FOR SERVICE.

AC LOSS The system is only operating on battery power due

to an AC power failure. If only some lights are out

(or NO AC

) on the premises, check circuit breakers and fuses

and reset or replace as necessary. Depending on

installer programming, an AC loss may prevent

arming, or you may need to perform the arming

sequence twice to override the condition (see your

installer).

If AC power cannot be restored and a “low system

battery” message appears, CALL FOR SERVICE.

Busy-Standby

(or dI)

If this message remains displayed for more than 1

minute, system is disabled. CALL FOR SERVICE.

OPEN CIRCUIT The keypad is not receiving signals from the control.

(or OC) CALL FOR SERVICE.

Long Rng Trbl If installed, the back-up communications media

portion of your system has failed (e.g., internet,

(or bF) intranet networks, long range radio).

CALL FOR SERVICE.

TELCO FAULT The telephone line has a problem.

(or CHECK 94) CALL FOR SERVICE.

Total Power Failure

If there is no keypad display at all, and the READY indicator is not lit, operating

power (from AC and back-up battery) for the system has stopped and the system is

inoperative. CALL FOR SERVICE.

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ADEMCO Vista AT Guía de usuario Pagina 23