BASO BGQ15HAA-1 - Manual (Page 9)

BGQ15HAA-1 Retrofit Spark Ignition System Installation Instructions 9
• Run: Main valve is energized and spark turns off after
pilot flame is proven. The main valve remains
energized until the thermostat is satisfied.
• Flameout: Loss of proven flame. Should a flameout
occur, the main valve de-energizes and spark recurs
within 2.0 seconds.
• Lockout: An internal or external fault has caused the
control to de-energize the spark circuit and valve
relays. The thermostat contacts must be opened for
30 seconds and then closed to begin another trial for
ignition.
• Inter-Purge: Period between trials for ignition when
both the gas valve and spark are de-activated to allow
unburned gas to escape before the next trial.
Sequence of Operation
The heating cycle start when a call for heat from the
thermostat supplies 24VAC to the TH terminal. The
automatic vent damper (if used) is energized and when
fully open, turns on the power to the ignition control. After
a 1 second maximum diagnostic period, the spark will
start and the pilot valve will turn on, starting with the trial
for ignition period.
During the trial for ignition period, the control sparks for 4
seconds while rapidly flashing LED. It then turns off the
spark and LED for 1 second while checking pilot flame
sense. This cycle will repeat until pilot flame is detected or
trial time is over.
When pilot flame is detected, the spark will stop, main
valve will turn on and the LED will stay on continuously.
The control will remain in this state until the pilot flame is
lost or the call for heat ends. If pilot flame is lost, LED,
main and pilot valves are turned off for 0.5 seconds and a
new trial for ignition sequence will star t.
If pilot flame is not detected during the trial for ignition
period, the pilot valve will be shut off. Lockout will occur if
your model has no retry. Otherwise, after 5 minutes or 60
minutes (for recycle units only) the control will delay for
the specific recycle delay period before beginning another
trial for ignition.
Table 1: LED Indications During Normal Operation
Flash Code Flash Code Indication
Steady On Flame detected, main burner on
.1 Second On
.1 Second Off Trial time spark on trying to light
pilot burner
1.0 Second On
4.0 Second Off 2 minute recycle delay time
Troubleshooting
If the system does not function properly, determine the
cause using the procedures in this section.
Before proceeding with troubleshooting the system, check
the following.
Preliminary Checks
‰ Are you using resistive wire between the module
spark (10) and the pilot connection?
‰ Are all mechanical and electrical connections tight?
‰ Is the system wired and ground correctly?
‰ Is gas inlet pressure per manufacturer’s
specifications?
‰ Is the system powered?
‰ Is the thermostat calling for heat?
!
WARNING: Risk of Personal Injury.
Do not place face, hands, or other parts of the body in
or near the burner area when the LED is flashing
(recycle mode). When the LED is flashing, the control
may at any time (while in the recycle mode) re-energize
the burner control system and ignite the burner which
may result in electric shock from contact with the
electrode or severe burn injury from firing of the burner.