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10. 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.
In the event of device failure, refer to 7-3.
“Operation - Trouble Alarm”, too.
For communication problems, refer to separate
“PS-7-M communication specifications guide”.
Table 3. Troubleshooting
Problem
Probable cause
Steps
Reference section
Green POWER LED
does not turn on.
Base unit power
switch is in OFF
position.
Set the switch to ON
position.
7-1.Operation
Procedure
Main unit power
switch is in OFF
position.
Set the switch to ON
position.
7-1.Operation
Procedure
Incorrect wiring.
Check and rewire.
Securely connect
wires to terminals.
6-1.Wiring Procedure
Connector to the front
panel is loose.
Securely connect the
connector.
9-3. Sampling Unit
Replacement
Blown fuse.
Replace the fuse.
*Turn off the detector
before replacement.
5-3. Base Unit
Amber TROUBLE
LED flashes.
Low flow rate due to
clogged filter
element.
Replace the filter
element.
9-1. Filter Element
Replacement
Low flow rate due to
pump failure.
Replace the sampling
unit.
9-3. Sampling Unit
Replacement
Low flow rate due to
clogged tubing.
Remove clog from
tubing.
Connector to the
pump unit is loose.
Securely connect the
connector.
9-3. Sampling Unit
Replacement
Incorrect sensor
installed (data does
not match the last
installed sensor type)
Install the correct
sensor type.
To install a different
sensor type, press
COMM. button to
renew the data.
7-1.Operation
Procedure
Sensor unit failure
Replace the sensor
unit.
9-2. Sensor Unit
Installation/Replacem
ent
Sensor unit is absent. Install the sensor unit.
9-2. Sensor Unit
Installation/Replacem
ent
Flow sensor output is
unstable immediately
after powering-up.
Leave the detector on
for about 30 minutes.
