Frequently Asked Questions

What Does "103 check lngrng radio" Mean On My ADT System?
If you see a Check 103 Error on your ADT Security System, then it means that there is a problem with the system's communicator. Learn about the Check 103 Error Message.
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How Do I Clear a Check 950 Comm Trouble On a Honeywell Lyric Controller?
A Lyric System showing 950 Comm Trouble is either not properly registered, or it has experienced an extended WIFI and/or cellular outage. Learn about Check 950 Comm Trouble.
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How Do I Check If the Tamper Switch On My Lyric Controller Is Bad?
If the tamper switch on a Lyric Panel isn't functional, then the system might display a Check 900 Cover Tamper Trouble. Learn how to check if your Lyric has a bad tamper switch.
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How Do I Clear a Check 990 RF Jam On a Honeywell Lyric Controller?
The reason a Check 990 RF Jam trouble will show up on a Lyric is because continuous 2.4 GHz signals are blocking signals from SiX Sensors. Learn about Check 990 RF Jam on a Lyric.
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How Do I Clear a Check 988 RF Jam On a Honeywell Lyric Controller?
The Lyric will show a 988 RF Jam trouble condition if the panel is constantly being sent 345 MHz signals to block Honeywell 5800 Sensors. Learn about 988 RF Jam on a Lyric.
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How Do I Clear a Check 901 Expansion Module Tamper On a Honeywell Lyric Controller?
The Lyric has a side slot where you insert a cellular module. If this side slot cover is removed, then a Check 901 Trouble will appear. Learn how to clear a Check 901 Trouble.
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How Do I Clear a Check 900 Cover Tamper On a Honeywell Lyric Controller?
If the Lyric Controller back cover is loose or removed, then the system will show a Check 900 Cover Tamper. Learn how to clear a Check 900 Cover Tamper on a Lyric Alarm System.
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How Do I Clear a Check 850 Low Batt Keypad From a Honeywell Lyric Controller?
The Lyric will display a Check 850 Low Batt Keypad condition when a programmed LKP500 Keypad has a low battery. Learn how to clear a Check 850 Low Batt Keypad error.
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How Does RF Supervision Loss Work On a 2GIG System?
All 2GIG Panels must receive RF check-in signals every 140 minutes, or else RF supervision loss occurs. This applies to a GC2, GC2e, GC3, and GC3e. Learn about RF supervision loss.
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How Does RF Supervision Work On a Honeywell VISTA P-Series System?
If you have a wireless receiver and wireless sensors for a VISTA System, then you will want to know about RF supervision. Learn about RF supervision on a Honeywell VISTA Panel.
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