Fault Conditions

The water heater is equipped with an ignition control that incorporates a diagnostic system to assist in troubleshooting the appliance. The indicator codes on the ignition module are as follows:

LED INDICATION	FAULT MODE
2 Flashes	Flame sensed without call for heat.
3 Flashes	Ignition Lockout.
Steady On	Internal Control Failure

The LED will flash on for 1/4 second, then off for 1/4 second during a fault condition. The pause between fault codes is 3 seconds.

INTERNAL CONTROL FAILURE

If the ignition control detects an error in its software or hardware, all outputs are turned off and the LED displays a steady ON condition. If an internal control failure is indicated, replace the ignition control.

TROUBLESHOOTING GUIDE FOR IGNITION CONTROL

	SYMPTOMS	CAUSES
1.	Control does not start	a. Miswired.
		b. No 24V AC power supply at TH/W terminal.
		c. Bad control, check LED for steady on or flashing
		code (see above Table).
2. Thermostat on -no spark		a. Miswired.
		b. No 24V AC power supply at TH/W terminal.
		c. Bad control, check LED for steady on or flashing
		codes.
3.	Valve on - no spark during TFI	a. Shorted electrode -establish 1/8 inch gap.
		b. Check high voltage cable.
		c. Miswired.
4.	Spark on - valve off	a. Valve coil open.
		b. Valve wire disconnected.
		c. Bad control, check voltage at gas valve terminals
		PV1 and V2.
5.	Flame okay during TFI - no flame sense after TFI	a. Poor ground at burner.
		b. Poor flame, check flame current.
		c. Check flame rod position.

FLAME SENSOR CURRENT CHECK

Flame current is the current that passes through the flame from the sensor to ground. The minimum flame current necessary to keep the system from lockout is 0.7 micro amps. To measure flame current, connect analog DC microammeter to the FC-, FC+ terminals on the Ignition Control. Meter should read 0.7 microamps or higher. If the meter reads below "0" on scale, meter leads are reversed; disconnect power and reconnect meter leads for proper polarity.

Servicing should only be performed by a Qualified Service Technician

381T1546NOX, 395T1996NOX, BCL, 381T1206NOX, 395T2506NOX specifications

The American Water Heater Ultra Low NOx Series represents a significant advancement in water heating technology, aiming to meet stringent environmental regulations while delivering reliable hot water for residential applications. Models such as the 104,395T1806NOX, 395T2506NOX, 381T1206NOX, and BCL are designed to prioritize efficiency, performance, and compliance with the latest emission standards.

One of the defining features of the Ultra Low NOx Series is its innovative combustion technology. These water heaters utilize a state-of-the-art gas burner that dramatically reduces nitrogen oxide (NOx) emissions, ensuring compliance with local and federal regulations. This technology not only benefits the environment but also contributes to improved indoor air quality.

Efficiency is a hallmark of the Ultra Low NOx Series, with models designed to maximize energy savings while delivering consistent hot water. They feature a user-friendly, adjustable thermostat, providing homeowners with the ability to set their desired water temperature for optimal comfort. In addition, the insulation on these water heaters is designed to minimize heat loss, ensuring that energy consumption is kept to a minimum.

The Ultra Low NOx models are equipped with an easy-to-use digital control panel that allows homeowners to monitor and adjust settings with ease. This convenience is enhanced by advanced diagnostics, which provide real-time alerts regarding system performance and maintenance needs. This proactive approach helps extend the lifespan of the unit and enhances reliability.

Safety is another crucial characteristic of the Ultra Low NOx Series. Each model is equipped with safety features such as a flame rollout switch and a fully automatic gas shut-off, which ensure that the system operates safely under various conditions.

In terms of installation and maintenance, these models are designed with user-friendly features, making the process simpler for technicians. The compact design allows for flexible installation options, even in tighter spaces.

Overall, the American Water Heater Ultra Low NOx Series, including the 104,395T1806NOX, 395T2506NOX, 381T1206NOX, and BCL models, represents an excellent choice for homeowners seeking an efficient, reliable, and environmentally responsible water heating solution. With a focus on reducing emissions and enhancing performance, these models are built to meet the demands of today's conscientious consumers.