Honeywell FF-SB12 Series Installation Manual page 55

Figure 4-3 Troubleshooting Flow Diagram (Sheet 1 of 2)
Go to Next
Sheet
62
Machine Down
Check LEDs, relay
status by using the
troubleshooting
chart
Problem
resolved?
Check incoming
voltage is within
specification or apply
power with external
test plugs (see Test
Plug Construction)
Yes
Problem
resolved?
No
No
Is spare unit (same size
Yes
Place spare emitter
receiver in front of the
machine's unit to
the failed unit
Yes Machine
working
Verify machine
plugs/wiring
interface
Replace faulty
unit
107062-12 EN FR26 GLO 501 Printed in France