Beckett 7590 Gas Power Burner Control - Manual (Page 9)

9
GeniSys Gas Power Burner Control Installation and Operation Manual
that help provide status and diagnostic
information. Reference Figure 1. The
three LEDs are Status, Flame, and MV
(main valve). The LEDs use 4 modes;
On, Off, Slow Flash, Fast Flash.
◦ Flame (yellow) = Flame Sense, Flame
Strength
◦ MV (green) = Gas Valve On/Off
◦ Status/Reset (red) = Power, Lockout,
Pre-Purge, or Waiting
The tables on Normal LED Sequence,
LED Diagnostic Help and Troubleshooting
describe the information available through
the LEDs.
Flame Signal Strength
Indication
The 7590 uses flame rectification to
prove the presence of the burner flame.
For reliable operation, a strong flame
current is needed. The yellow Flame LED
provides a reliable indication of the flame
current strength.
When the burner is lit;
◦ A continuously on Flame LED indicates
a strong flame current.
◦ A slowly flashing Flame LED indicates
a marginal flame current strength.
Consider adjusting the electrode or
flame rod to improve the flame signal.
If the Flame LED is off, no flame is being
detected. Refer to the Troubleshooting
Section to resolve the issue.
Lockout
If the red Status/Reset button is flashing
rapidly (3 times per second), the control is
in lockout. All control outputs are turned off
and the control will not respond to a call for
heat. The control enters lockout when:
◦ The control fails to prove flame during
the trial for ignition period
◦ The control fails the relay check
◦ The air pressure switch is closed(stuck)
at the beginning of the ignition
sequence
◦ The air pressure switch fails to close
after the motor/blower starts
If the control is programmed for 3 trials for
ignition, the control will lockout after the
3rd unsuccessful attempt.
Fire or Explosion
Hazard
Can cause severe injury, death,
or property damage.
• Be sure that gas or gas vapors
have not built up in or around
the appliance before starting or
resetting the burner.
• Turn thermostat or controller
off and wait 5 minutes before
attempting to start or reset burner.
Reset from Lockout
To reset the control from lockout, push the
red Status/Reset button when there is power
to the control. The button does not need
to be held down for the control to reset.
Following reset, the control will start the
ignition sequence. The standard control can
also be reset by removing power from the
control for 10 seconds, then restoring power.
Standard Control Models: 7590D or T
have volatile lockout and can be reset by
removing, then restoring power or pushing
the red Status/Reset button.
Non-Volatile Lockout Model: 7590C cannot
be reset by removing and restoring power.
Lockout must be reset by pushing the
Status/Reset button while the control is
powered.
Lockout with Retry (Optional)
Interruptions in the gas supply can prevent
the burner from lighting during the trial for
ignition and cause the control to lockout. If
the house or building is unoccupied for long
periods during cold weather, a lockout can
lead to low temperatures or freezing in the
structure.