American Water Heater 1010 319869-000 Fault Lockout Code Description Cause Remedy Type Displayed

Fault			Lockout
Code	Description	Cause			Remedy
			type
Displayed
E33	Water Flow Valve	The water valve did not		1. Check the water valve wire harness.
	Closed.	open when attempting to	Soft	2. Change the board.
		establish flow.		3.	Change the water valve.
E34	Proportional Valve	The closed loop control		Check the proportional gas valve wire
	(PV) Response	of the proportional valve		harness, change the board, change
	Too Slow.	is not functioning properly	Soft	the gas valve assembly
		(control error) or the valve
		is responding slowly (valve
		failure).
E35	Repeated Flame	Low Gas Inlet Pressure.		1. Clean or change the water filter.
	Loss Fault.	Low Water Flow Rate		2. Check the flame rod wire harness.
				3.	Check line gas pressure. If it is above
			Soft		5” WC check the flame rod and if it
					looks dirty, clean it up using isopropyl
					alcohol and a clean cloth.
				4. Change the flame rod.
				5. Change the board.
E36	Calibration error.	Calibration sequence		1.	Unplug the power cord, check the
		incomplete because end			DIP switch 4 position and put it in
		of “call-for-heat” during			ON position.
		the calibration time, or		2.	Increase the set point so that a
		calibration sequence not			“call-for-heat” occurs.
		initiated because of lack of	Soft	3.	Drain the tank in order to lower the
		“call-for-heat”, or the unit			water temperature so that a “call-
		has been never calibrated			for-heat” is generated.
		or Calibration is successful		4.	Set DIP switch 4 to OFF position.
		but DIP switch 4 not set to		5.	Recalibrate the unit.
		“normal”.		6.	Change the board.
E37	No Water Flow.	The heater could not start		1.	Check the water inlet on the heat
		because the water flow was			engine.
		not established. This can be		2.	Make a water draw during first 60
		caused by an air bubble or a			seconds after putting the unit in ON
		blockage in the heat engine			mode (to evacuate possible air from
		water passage, a failed flow			the heat engine water passage).
		sensor or a failed circulation		3.	Check wire harness for pump, water
		pump.	Soft		valve and water flow sensor.
				4. Check the pump 120Vac voltage
					supply (the pump shall be energized
					during the heating mode).
				5.	Clean or change the water filter.
				6. Change board.
				7. Change pump.
				8. Change water valve.
E99	Board Failure.	An internal diagnostic check	Soft	Change the board.
		on the board has failed.
		TABLE 5

Lockout types:

Continuous. Needs “Cycle the Power” or service to restart.

Soft. Will try to automatically recover and restart after 20 minutes.

Auto Reset. Will automatically restart when voltage returns to acceptable parameters.

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