Bradford White Defender RG130T Series Service Manual page 8

White Rodgers Electronic Gas Control Troubleshooting Chart
Observe green LED indicator on gas control. Status
flash codes are displayed with a three second pause
before repeating. Check and repair the system as
noted in the troubleshooting table below.
LED Status
None (LED not on
or flashing)
One flash every
four seconds
One flash every
second
Solid ON
Two flashes and
three second
pause
Four flashes and
three second
pause
Five flashes and
three second
pause
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Flammable Vapor Ignition Resistant Water Heaters
Control Status
Indicates control is off. Main
and pilot burner are off.
Not an error. Indicates pilot is
lit and main burner is off.
Not an error. Indicates main
valve is open and main
burner is lit.
Not an error. Indicates that
the control is in shutdown
mode.
Low thermopile voltage; main
burner not lit.
Temperature cut-out limit
reached causing shutdown.
Electronics, sensor, or gas
valve fault detected.
Probable Cause
Gas valve is functioning normally. Gas valve is
not powered. Light pilot.
Gas valve is powered and waiting for the set
point knob to be turned to a water temperature
setting. If the set point knob is at desired setting,
the thermostat is satisfied.
Thermostat is calling for heat. Water heater
operating normally and is in heat cycle.
Set point knob was recently turned to "OFF"
position. Wait until LED goes out before
attempting to relight.
Loose thermopile connections or weak pilot
flame.
Excessive temperatures may have been
reached. Shut off the control and reduce the
water temperature. Thoroughly verify control
operation, replace if exceeding setpoint.
Control may be wet or damaged. Verify all
connections are tight; if problem persists replace
the control.
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