BASO BGQ15HAA-1 - Manual (Page 12)

12 BGQ15HAA-1 Retrofit Spark Ignition System Installation Instructions
Yes
No
No
Yes
Turn on power
and gas.
Close thermostat
contacts.
Module LED
did not light and
no spark?
Module LED
blinks slowly?
Diagnostic error
see next page.
Replace module.
24V between
TH and GND
terminals?
Yes
No
Yes
Module LED
blinks rapidly but
no spark?
Damper
used?
No
Shorting
plug in?
Check transformer,
thermostat and wiring.
Repair or replace as needed.
24V between
damper pin 2 & 4?
Yes
Replace
module.
Check and repair
damper, and/or
damper wiring.
No
Yes
Yes
No
Connect pin 2-3
shorting plug to
damper.
No
Spark wire
and electrode
OK?
Replace
module.
Replace spark wire
or electrode.
Yes Yes
No
Pilot flame
does not
light?
24V between
PV and GND
terminals?
Replace
module.
Gas at pilot
burner?
Yes
Yes
No
Check shutoff valves are on.
Check wiring to pilot valve.
Check orfice and tubing are clear.
If all OK replace pilot valve.
Adjust or replace spark
electrode and/or pilot
burner.
No
Pilot lights
but keeps
sparking?
Pilot 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.
Pilot is lit
continued
on next page
No
No
Figure 8: Troubleshooting Flow Chart (1 of 2)