Bradford-White Corp M-2-50T6DS service manual Quick Step Plan to Hot Water

TROUBLESHOOTING

Quick Step Plan to Hot Water

1.TURN OFF power to water heater and check all wire connections to insure they are tight and corrosion free.

2.Turn power “ON” and determine that service voltage is present, and the high limit (ECO) has not actuated (see procedure on page 14).

WARNING

High voltage exposure. Use caution when making voltage checks to avoid personal injury.

3.Check for inoperative heating element (see procedure on page 15).

4.Check for proper thermostat operation (see procedures beginning on page 16). NOTE: Thermostat testing procedures assume items 2 and 3 above are in working order.

SYMPTOM

No Hot Water

Not Enough Hot

Water

Slow Hot Water

Recovery

Over Heated

Water or

Continues

Operation

Noisy (singing or hissing) Elements

		PROBABLE CAUSE		CORRECTIVE ACTION		SERVICE
					PROCEDURE
			1.	Check fuses or circuit breakers in service
					3. See Service Procedure
1.	No Power to heater.			panel.
			2.	Check all wire connections.		RE-II, Page 15.
2.	Loose wire connections.
			3.	Check heating element(s). Replace as	4. See Service Procedure
3.	Inoperative upper heating element.
				needed.		RE-III, Page 16.
4.	Inoperative upper thermostat.
			4.	Check thermostat(s) operation. Replace as	5. See Service Procedure
5. Open ECO.
				needed.		RE-I, Page 14.

5.Check ECO. Reset or replace thermostat(s) as needed.

		1.	Check heating element(s), replace as
1.	Inoperative lower heating element.		needed.	1.	See Service Procedure
2.	Thermostat(s) set to low.	2.	Increase thermostat setting.
3.	Inoperative thermostat(s).	3.	Check thermostat(s), replace as needed.		RE-II, Page 15.
4.	Loose wire connection.	4.	Check all wire connection.	3.	See Service Procedure
5.	Sediment or lime build up on element(s).	5.	Remove heating element(s) and check for		RE-III, Page 16.
6.	High demand period.		lime build up.	5.	See Service Procedure
7.	Undersized heater.	6.	Reduce demand.		RE-VI, Page 34.
8.	Very cold inlet water to heater.	7.	Replace with larger heater.	10. See Service Procedure
9.	Plumbing connections reversed.	8.	Temper water to heater.		RE-VII, Page 35.
10. Damaged dip tube.		9.	Correct plumbing connections.
		10. Check dip tube, replace as needed.
		1.	Remove heating element(s) and check for	1.	See Service Procedure
1.	Sediment or lime build up on element(s).		lime build up.
2.	Loose wire connections.	2.	Check all wire connections.		RE-VI, Page 34.
3.	Inoperative thermostat(s).	3.	Check thermostat(s), replace as needed.	3.	See Service Procedure
4.	Derated heating element installed.	4.	Check terminal block of element for proper		RE-III, Page 16.
			voltage and wattage rating.
1.	Thermostat not in contact with tank.	1.	Position thermostat flush with tank surface.	1.	See Service Procedure
		2.	Check heating element(s). Replace as		RE-V, Page 33.
2.	Grounded heating element(s).		needed.	2.	See Service Procedure
3.	Thermostat set to high.	3.	Adjust thermostat(s) to desired setting.		RE-II, Page 15.
4.	Inoperative thermostat(s).	4.	Check thermostat(s), replace as needed.	4.	See Service Procedure
5.	Inoperative ECO.	5.	Check ECO, replace thermostat as		RE-III, Page 16.
6.	Undersized water heater.		needed.	5.	See Service Procedure
		6.	Replace with larger heater.		RE-I, Page 14.
1.	Lime formation on elements.	1.	Remove and clean heating elements.	1.	See Service Procedure
			Replace as needed.		RE-VI, Page 34.

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