New Cosmos Electric KS-7D, Instruction Manual

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9. Troubleshooting
Before requesting repair, please refer to the table below. If the detector does not return to normal
operation after performing the corresponding steps in the table, or if your issue is not found in the table,
consult New Cosmos or its authorized representative.
Problem Probable cause Solution Reference section
Green status indicator
not lit.
Main power switch or
POWER button is off
Set the main power
switch to on position or
press and hold the
POWER button for 3
seconds.
7-2. Operating
Procedure
Incorrect wiring or loose
connection
Check and
rewire/reconnect.
6. Wiring
No power supplied Supply correct power.
7-1. Precaustions before
Use
Maintenance icon
displayed on LCD, and
gas concentration
value and
“_ _ _ _”
displayed alternately.
Product is in
Maintenance mode
Switch the Maintenance
mode to OFF.
7-4-2. Switching
Maintenance Mode
On/Off
No audio alarm.
Product is in
Maintenance mode
Switch the Maintenance
mode to OFF.
7-4-2. Switching
Maintenance Mode
On/Off
Incorrect alarm set value
Check the alarm set
value.
7-3-3. Full Scale and
Alarm Set Value Display
Non-audio unit selected
at time of order
Consult your New Cosmos representative.
Alarm relay contacts
do not activate.
Product is in
Maintenance mode
Switch the Maintenance
mode to OFF.
7-4-2. Switching
Maintenance Mode
On/Off
Incorrect wiring or loose
connection
Check and
rewire/reconnect.
6. Wiring
Incorrect alarm set value
Check the alarm set
value.
7-3-3. Full Scale and
Alarm Set Value Display
▪
Sensor replacement
icon displayed on
LCD.
▪
Once a minute
sensor replacement
audio alarm.
Total operating time has
reached three years,
and the sensor
replacement alert is
activated.
Contact your
representative for
sensor replacement.
To mute the audio
alarm, press he RESET
button. The muted audio
alarm will become
audible, once the
8-1. 6) Sensor
Replacement