BASO BG1100M - Manual (Page 8)

8 BG1100M Direct Spark Ignition Control Installation Instructions
Yes
No
No
Yes
Turn on power
and gas.
Close thermostat
contacts.
Module red LED
did not light and
no spark?
Module red LED
blinks slowly?
Diagnostic error
see next page.
Replace module.
24V between
TH and GND
terminals?
Yes
No
Yes
Module red LED
blinks rapidly but
no spark?
Check transformer,
thermostat and wiring.
Repair or replace as needed.
Replace
module.
No
Spark wire
and electrode
OK?
Replace
module.
Replace spark wire
or electrode.
Yes Yes
No
Flame
does not
light?
24V between
valve and GND
terminals?
Replace
module.
Gas at
burner?
Yes
Yes
No
Check shutoff valves are on.
Check wiring to valve.
Check orifice and tubing are clear.
If all OK replace pilot valve.
Adjust or replace spark
electrode and/or pilot
burner.
No
Burner lights
but keeps
sparking?
Burner flame in contact
with spark or sense
electrode?
No Yes
Yes
Replace
module.
No
Check burner orifice.
Adjust pilot flame size or
electrode position.
Two rod
flame sense?
Yes
Check wiring electrode
to SENSE terminal.
If OK replace module.
Burner is lit
continued
on next page
No
No
Figure 4: Troubleshooting Flow Chart (1 of 2)