State Industries SHE 50 76N Ignition/flame failure, Maximum number of retries and is

TROUBLESHOOTING GUIDELINES

WATER HEATER CONTROL

TROUBLE SHOOTING

Please check guidelines below. For your safety, water heater service should be performed only by a qualified service technician.

Read the GENERAL SAFETY INFORMATION section first.

INTELLI-VENT TROUBLESHOOTING CHART - USER CONTROL

#	LED STATUS	PROBLEM	SOLUTION
6	B C D E F	Ignition/flame failure.	1. Gas supply is turned off-pressure too low. Ensure supply and
		The water heater has reached the	manifold gas pressures are within requirements in installation
			manual. Manifold gas pressure is non-adjustable if pressure is
		maximum number of retries and is	off by more than 0.3” W.C. (75 Pa) replace Intelli-Vent™ control.
		currently locked out for one hour.	2. Low supply voltage - should be 115 -125 VAC.
		Cycle the power to the water heater	3. Ensure flame sensor is making good contact with burner
		off and on to reset.	flame, ensure flame is steady see #8 below.
		Service Note:	4. Ensure the flame sensor is clean - use ultra fine steel
		The resistance (ohms) of a hot surface	wool or Scotch-Brite™ pad to clean flame sensor.
		ignitor will increase over time. If the	5. Ensure the hot surface ignitor is positioned to provide
		resistance at room temperature is near
			consistent ignition.
		18.8 ohms - consider replacing the ignitor
			6. Check for any cracks in ignitor assembly ceramic
		as a preventative measure.
			insulators - replace ignitor assembly if damaged.
			7. Check resistance of ignitor at room temperature (77ºF)
			(25°C) at the plug end. Replace ignitor if resistance is
			not within 11.5 and 18.8 ohms at room temperature.
			8. Ensure correct size of vent pipe (2”, 3”, 4”) was used per
			installation manual for vent length. Using larger pipe than required
			may cause excessive air turbulance in combustion chamber.
7	B C D E F	Self diagnostic tests have found a problem	1. Turn the power off for 10-20 seconds then on again to
		with the gas valve driver circuit, internal	clear these error codes.
		microprocessor, or other internal circuits.	2. If any of these error codes persist or cannot be cleared-
8	B C D E F		replace the Intelli-Vent™ control.
9	B C D E F
10	B C D E F	Flame signal has been sensed out of	1. Turn the power off for 10-20 seconds and then on again
		proper sequence.	to clear this error code.
			2. Replace the Intelli-Vent™ control if this error code persists.
	B C D E F	Water temperature in the tank has	1. Turn the power off for 10-20 seconds then on again
11		exceeded 195°F (91°C) and has	to clear this error code.
		activated the ECO.	2. Replace the Intelli-Vent™ if the error code persists.
		The self diagnostic check detected one	1. Press and release temperature adjust buttons. If above
12	B C D E F	or both of the temperature adjust buttons	action does not clear error, control will continue to regulate
		are stuck.	water temperature at last setting. However, settings will no
			longer be adjustable - the control should be replaced.
	B C D E F	The self diagnostic test has detected the	1. Turn power off for 10-20 seconds then on again to
13		water temperature sensor (thermistor) is	clear this error code.
		either open or shorted.	2. Replace the Intelli-Vent™ control if this error code persist.
14	B C D E F	Self-diagnostic test found a problem with black	1. Turn off power to the water heater.
		resistor wire on the ignitor assembly plug; resistor	2. Insure black resistor wire is not cut, missing, and is installed
		wire is open or shorted.	between pins 3 & 4 of ignitor assembly plug. Replace ignitor
		Service Note: To perform this test ohm meter	assembly if damaged or defective.
			3. Unplug ignitor assembly plug from control. Check resistance
		used must be capable of reading up to 2,000,000	of black resistor wire between pins 3 & 4 with an ohm meter.
		ohms. Unless ohm meter used has an auto-range	3.1 If reading taken is less than 2000 (5000 for date code 0617
		feature resistance should be checked twice. First	through 0709) or more than 1.7 million ohms, replace ignitor
		reading will be taken using an ohms scale above	assembly. 3.2 If reading taken is between 2000 (5000 for date
		1,700,000 ohms. Second reading is taken using	code 0617 through 0709) and 1.7 million ohms, replace
		ohms scale just above 2,000 or 5,000 ohms.	Intelli- Vent™ control.
			Service Note: Raised ridges on ignitor assembly plug identify
			#1, #2, and #3 pins. The four-digit date code can be found on
			side of the controller.

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