Honeywell SYA14 Series Manual page 141

Figure 4-3 Troubleshooting Flow Diagram (Sheet 2 of 2)
***
Check Receiver
(ensure alignment is correct;
ensure front window is clean)
On
Faulty Receiver Power
Supply Board
Return emitter and
receiver to Honeywell
60 Honeywell • MICRO SWITCH Sensing and Control
Continued from Sheet 1
When the sensing field is clear
and the emitter and receiver are
Yes
correctly aligned; Check if E1
and E2 LEDs on the emitter are
illuminated. Ensure the front
plate is clean.
Check Status of LED R4
Off
Replace Receiver
OK
No Problem Resolved?
Yes
Machine Works
FF-SB Series Installation Manual
No
No
Visually check all the red
light spots on the emitter are
Process
illuminated. (see Emitter
Board Visual Test)
Yes
Flicker
Go to ***
Machine Working
Correct Supply
No
Voltage?
Yes
Check Receiver Mode
Setting
No
Correct Mode Settings
For application help: call 1-800-537-6945
Emitter Failed, Replace with
Alternate One
Problem Resolved?
No
Yes
Go to ***
Correct Supply Voltage