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Rev. 11-5 12/15/2020
Copyright © 2020 by Cool Air Incorporated. All rights reserved.
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In the event of a detector error, one of these error codes will be displayed
on the front panel digital display possible causes are listed after the error
description and are in order from most likely cause to least likely cause.
Error Code
Description
Err2
Loss of AC power
occurs with battery back up or low ac input
Defective Control display board (LBW-420-CDB)
Defective Power Supply board (LBW-420-PSB-(Voltage))
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:
:
Message Code
Description
SEr
Service jumper “on”
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4
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Any error condition will cause the ammonia level 4-20 mA signal to
go to near zero indicating a fault.
