Bradford-White Corp U130T*FRN LED Status, Probable Cause, Service Procedure, Control Status

Gas Control Troubleshooting

Observe red LED indicator on gas control. Error flash codes are displayed with a three second pause before repeating. Check and repair the system as noted in the troubleshooting table below.

Red LED Indicator

LED Status	Control Status	Probable Cause	Service Procedure
	Gas valve is operating		If the pilot will not stay lit
	normally. Pilot flame	1. Gas valve is
None (LED not on			replace thermopile, see
	may not be present.	functioning normally
			page 10. If problem
or flashing)	Check for pilot flame	2. Gas valve is not
			persists replace gas
	through sight glass and	powered. Light pilot
			valve, see page 16.
	light if necessary.
One flash and	If set point knob is in	Gas valve is powered
	"PILOT" position then	and waiting for the set	Normal operation. Adjust
three second	pilot flame is detected.	point knob to be turned	thermostat to desired
pause.	Turn set point knob to	to a water temperature	temperature level.
	desired setting	setting.
	Set point knob has
LED on	been recently turned to	Set point knob was	LED will go out and the
	the "OFF" position.	turned to "OFF"	control will function
continuously.	Wait until LED goes out		normally when the pilot is
	before attempting to	position.	lit.
	relight
	Weak pilot flame	1. Thermopile failure
Two flashes and		2. Unstable pilot.	1. See page 10.
	detected. System will	3. Pilot tube block or
three second			2&3. See page 12.
	reset when pilot flame	restricted.
pause.			4. See page 21.
	is sufficient.	4. Resettable thermal
		switch has opened.
Three flashes and	Insufficient water	1. Thermowell sensor
		and chamber	1&2. See pages 14 and
three second	heating. System will	temperature sensor out
pause.	reset.	of calibration.	18.
		2. Possible short.
Four flashes and	Excessive tank	1. Thermowell sensor	1. See page 14.
three second	temperature. System	out of calibration.
			2. See page 16.
pause.	must be reset.	2. Faulty gas valve.

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