Installation / Operation Instruction Manual

27
Troubleshooting- White Rodgers Electronic
LED Status
Control Status
Probable Cause
None (LED not
on or flashing)
Indicates control is off.
Main and pilot burner
are off.
Gas valve is functioning normally.
Gas valve is not powered. Light pilot.
One flash
every four
seconds
Not an error. Indicates
pilot is lit and main
burner is off.
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.
One flash
every second
Not an error. Indicates
main valve is open and
main burner is lit.
Thermostat is calling for heat. Water
heater operating normally and is in heat
cycle.
Solid ON
Not an error.
Indicates that the
control is in shutdown
mode.
Set point knob was recently turned to
“OFF” position. Wait until LED goes out
before attempting to relight.
Two flashes
and three
second pause
Low thermopile
voltage; main burner
not lit.
Loose thermopile connections or weak
pilot flame.
Four flashes
and three
second pause
Temperature cut-out
limit reached, causing
shutdown.
Excessive temperatures may have been
reached. Shut off the control and reduce
the water temperature. Thoroughly verify
control operation, replace if exceeding
setpoint.
Five flashes
and three
second pause
Electronics, sensor, or
gas valve fault
detected.
Control may be wet or damaged. Verify
all connections are tight; if problem
persists replace the control.