-24- 
 
No.PS※※-OMG0002-F 
 
Troubleshooting 
○Troubleshooting 
Applicable pressure switch: PSE300 
If a cause applicable to the failure cannot be identified and normal operation can be recovered by 
replacement with a new Pressure switch, this indicates that the Pressure switch itself was broken. The 
Pressure switch breakage can be caused by operating environment (network construction, etc.), and so 
consult with SMC separately to obtain countermeasures. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Yes 
No
 
The Pressure switch 
does not operate 
normally 
Refer to reference 
No.1
 
The switch output is 
on 
The indication light 
is on 
The indication light 
works improperly 
The switch output is 
off 
The switch output 
generates chattering 
The indication light 
is off 
The indication light 
is off 
The indication light 
is on 
The product is 
broken 
Refer to reference 
No.2
 
Refer to reference 
No.1
 
Refer to reference 
No.4
 
Refer to reference 
No.3
 
The product is 
broken 
The product is 
broken 
Analogue output is not 
provided (Specified 
accuracy is not 
satisfied) 
Refer to reference 
No.6
 
Slow switch output 
response 
Refer to reference 
No.5
 
An error signal 
comes on 
Refer to reference 
No.7