Bradford White RG250H6N-475, Manual

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28
TROUBLESHOOTING CHART – HONEYWELL V2.
LED Status Control Status Probable Cause
None (LED not on or
flashing)
Not an error. Indicates
control is in OFF mode.
Pilot is off. Gas valve is functioning
normally. Gas valve is not
powered. Light pilot.
One flash every four
seconds
(LED green) 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
(LED green) 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.
Two flashes and three
second pause
(LED yellow)
Low thermopile voltage;
main valve not turned
ON.
Loose thermopile connections or
weak pilot flame.
Four flashes and three
second pause
(LED red) 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
(LED red)
Electronics, sensor, or
gas valve fault detected.
Control may be wet or
damaged. Verify all connections
are tight; if problem persists
replace the control.
Solid ON
(LED red)
Not an error. Indicates
that the control is in
shutdown mode. Pilot is
off. Set point knob was recently
turned to “OFF” position. Wait
until LED goes out before
attempting to relight.