Bradford-White Corp PE440T*F(BN,SX), PE4503*F(BN,SX), PE4403S*F(BN,SX) Troubleshooting

Troubleshooting

Note: The Troubleshooting section replaces pages 4-6 in the Defender Atmospheric service manual, p/n 238-44943-00.

Observe the green LED on the water heater gas control. Diagnostic codes are displayed with a 3 second pause before repeating. Once the diagnostic code is known, check and repair the water heater, as recommended in the table below.

Green LED

LED Status	Control Status	Probable Cause	Service Procedure
None (LED	Electrical power not	Control power switch in "OFF"	Turn Power On
not on or	present	position.
flashing)		Supply voltage interrupted.
One short	Stand-by mode,	Temperature demand is satisfied
flash every	Thermostat is		Normal operation
four seconds	satisfied (no faults)	(no call for heat)
Alternates
bright and	Thermostat calling	Tank temperature below	Normal operation
dim	for heat (no fault)	setpoint of thermostat
(heartbeat)
		1. Unstable pilot
		2. Pilot tube blocked or restricted	1. See Burner Inspection on
Short flash	Weak pilot signal	3. Oxidation build-up on pilot	page 17
once every		electrode	2-4. See Pilot Inspection,
second	on last call for heat	4. Wire damage to pilot	Testing and Replacement on
		assembly or bad connection at	page 19
		gas control
Two flashes,			1. Verify cord sets are fully
			plugged in
three second	Relay not working	Faulty relay
			2. See Relay Replacement on
pause
			page 28
Three			1. Verify cord sets are fully
flashes,	Relay not working	Faulty relay	plugged in
three second			2. See Relay Replacement on
pause			page 28
Four flashes,	Excessive tank	1. Thermal well sensor out of	1. Test Gas Control & Thermal
	temperature,		Well
three second		calibration
	system must be		2. Replace gas control if
pause		2. Faulty gas control
	reset		necessary
Five flashes,	False pilot flame
three second		Pilot valve stuck in open position	Replace gas control
	present
pause
		1. Unstable pilot
Six flashes,		2. Pilot tube block or restricted	1. See Burner Inspection on
one flash,	Failed to light pilot,	3. Oxidation build-up on pilot	page 17
three second	system resets after	electrode	2-4. See Pilot Inspection,
pause (Soft	(5) minutes	4. Wire damage to pilot	Testing and Replacement on
Lockout)		assembly or bad connection at	page 19
		gas valve
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