Bradford-White Corp TG-150I-N(X), TG237I-N(X), TG-180I-N(X) Code Code Description Flame Failure

Code	Code Description
12	Flame Failure

14	Thermal Fuse
16	Over Temperature
	Warning
32	Outgoing Water
	Temperature Sensor
	Fault
33	Heat Exchanger
	Outgoing Temperature
	Sensor Fault
34	Combustion Air
	Temperature Sensor
	Fault
52	Modulating Solenoid
	Valve Signal Abnormal
61	Combustion Fan
	Failure
65	Water Flow Control
	Fault
71	SV0, SV1, SV2, and
	SV3 Solenoid Valve
	Circuit Fault

Remedy

Check that the gas is turned on at the water heater and gas meter. Check for obstructions in the flue outlet.

Ensure gas line, meter, and/or regulator is sized properly. Ensure gas type and pressure is correct.

Bleed all air from gas lines.

Ensure proper Bradford White venting material was installed. Ensure condensation collar was installed properly.

Ensure vent length is within limits. Verify dip switches are set properly. Ensure water heater is properly grounded. Disconnect keypad.

Disconnect Manifold Electronic Controls to isolate the problem. Check power supply for loose connections.

Check power supply for proper voltage and voltage drops. Ensure flame rod wire is connected.

Check flame rod for carbon build-up.

Disconnect and reconnect all wiring harnesses on unit and PC board. Check for DC shorts at components.

Check gas solenoid valves for open or short circuits.

Remove burner plate and inspect burner surface for condensation or debris.

Check gas type of unit and ensure it matches gas type being used. Check for restrictions in air flow around unit and vent terminal.

Check for low water flow in a circulating system causing short-cycling. Ensure dip switches are set to the proper position.

Check for foreign materials in combustion chamber and/or exhaust piping. Check heat exchanger for cracks and/or separations.

Check heat exchanger surface for hot spots which indicate blockage due to scale build- up. Refer to instructions in manual for flushing heat exchanger.

Measure resistance of safety circuit.

Ensure high fire and low fire manifold pressure is correct. Check for improper conversion of product.

Check for restrictions in air flow around unit and vent terminal.

Check for low water flow in a circulating system causing short-cycling. Check for foreign materials in combustion chamber and/or exhaust piping. Check for clogged heat exchanger.

Check sensor wiring for damage. Measure resistance of sensor. Clean sensor of scale build-up. Replace sensor.

Check sensor wiring for damage. Measure resistance of sensor. Clean sensor of scale build-up. Replace sensor.

Check for restrictions in air flow around unit and vent terminal. Check sensor wiring for damage.

Measure resistance of sensor. Clean sensor of scale build-up.

Ensure fan blade is tight on motor shaft and is in good condition. Replace sensor.

Check modulating gas solenoid valve wiring harness for loose or damaged terminals. Measure resistance of valve coil.

Ensure fan will turn freely.

Check wiring harness to motor for damaged and/or loose connections. Measure resistance of motor winding.

The water flow control valve has failed to close during the bath fill function. Immediately turn off the water and discontinue the bath fill function. Contact a state qualified or licensed contractor to service the water heater.

Check wiring harness to all solenoids for damage and/or loose connections. Measure resistance of each solenoid valve coil.

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