Omron F3SS, Instruction Manual

5-1 Troubleshooting

5 Troubleshooting and Maintenance

20

5  Troubleshooting and Maintenance

5-1 Troubleshooting

Two diagnostic indicators labeled F1 and F2 are located on the back cover of the receiver. These indicators will 
flash a discrete number of flashes to indicate the possible source of a problem. Only those codes which can as-
sist the user in correcting a fault are listed in the following text.

5-2 Maintenance

The Checkout Procedure (Appendix B) should be performed at least every three months or more frequently de-
pending on machine usage. Only qualified personnel should perform the procedure. Inspection logs should be 
kept with the machine records.
Oil, dust and grease can build up on the plastic lens of the emitter and receiver and can affect operation of the 
F3SS. A periodic cleaning will prevent these problems. Clean the lenses with a mild detergent or glass cleaner. 
Use a clean, soft, lint-free cloth or wipe to dry. Painted surfaces may be cleaned with a mild degreasing cleaner 
or detergent.

Table 5-1 Troubleshooting with F1 and F2 flashing indicators

Number of Flashes 

on F1 or F2

Fault Description

Suggested Solution

1

More than one valid transmit code 
detected by receiver

Check codes of adjacent systems. Set 
to different codes

2 or 9

Code or mode not valid at power up

Check settings on internal DIP 
switches. Set to valid setting.

3

Any DIP switch changed after power 
applied. Invalid DIP switch setting.

Check DIP switch settings. Remove 
and reapply power.

5

Output relay not properly responding.

Check output relays. If replacement is 
needed return unit to OMRON.

All Other codes

Fault is not user serviceable.

Consult OMRON