Amana AMV9, ACV9 Troubleshooting Chart, Symptoms of Abnormal, Fault Descriptions, Possible Causes

TROUBLESHOOTING CHART

Symptoms of Abnormal	Associated	Fault Description(s)	Possible Causes	Corrective Action	Cautions and Notes
Operation	LED Code2
• Circulator blower runs		• Primary or auxiliary	• Insufficient conditioned air	• Check filters and	• Turn power OFF
continuously. No furnace	4	limit circuit is open.	over the heat exchanger.	ductwork for blockage.	prior to repair.
operation.			Blocked filters, restrictive	Clean filters or remove
• Integrated control module	4 FLASHES		ductwork, improper	obstruction.	• See Product Data
diagnostic LED is flashing			circulator blower speed, or	• Check circulator blower	Book applicable
FOUR (4) flashes.			failed circulator blower.	speed and performance.	to your model* for
				Correct speed or replace	allowable rise
			• Flame rollout.	blower if necessary.	range and proper
			• Misaligned burners, blocked	• Check burners for proper	circulator speed.
		• Rollout limit circuit is	flue and/or air inlet pipe, or	alignment.	• See “Vent/Flue
		open.	failed induced draft blower.	• Check flue and air inlet	Pipe” section for
			• Loose or improperly	piping for blockage,	piping details.
			connected wiring.	proper length, elbows,
				and termination. Correct
				as necessary.	• Replace pressure
				• Check induced draft
					switch with proper
				blower for proper	replacement part.
				performance. Replace, if
				necessary.
				• Tighten or correct wiring
• Induced draft blower and			• Short to ground in flame	connection.
		• Flame sensed with		• Correct short at flame	• Turn power OFF
circulator blower runs	5	no call for heat.	sense circuit.	sensor or in flame	prior to repair.
continuously. No furnace				sensor wiring.
operation.	5 FLASHES		• Lingering burner flame.	• Check for lingering
• Integrated control module
				flame
diagnostic LED is flashing			• Slow closing gas valve	• Verify proper operation
FIVE (5) flashes.
				of gas valve
• Normal furnace operation.		• Flame sense	• Flame sensor is coated/	• Sand flame sensor is	• Turn power OFF
• Integrated control module		microamp signal is	oxidized.	coated/oxidized.	prior to repair.
diagnostic LED is flashing		low.	• Flame sensor incorrectly	• Inspect for proper sensor	• Sand flame
SEVEN (7) flashes.	7		positioned in burner flame.	alignment.	sensor with
			• Lazy burner flame due to	• Check inlet air piping for	emery clot.
	7 FLASHES		improper gas pressure or	blockage, proper length,	• See “Vent/Flue
			combustion air.	elbows, and termination.	Pipe” section for
				• Compare current gas	piping details.
				pressure to rating plate	• See rating plate
				info. Adjust as needed.
					for proper gas
					pressure.
• Furnace not operating.		• Problem with	• Improperly connected	• Check and correct wiring	• Turn power OFF
• Integrated control module		igniter circuit.	igniter	from integrated control	prior to repair.
diagnostic LED is flashing	8			module to igniter	• Replace igniter
EIGHT (8) flashes.			• Bad igniter	• Replace bad igniter	with proper silicon
	8 FLASHES		• Poor unit ground	• Check and correct unit	nitride replace-
				ground wiring	ment part.
• Furnace operating on		• High stage pressure	• Pressure switch hose blocked,	• Inspect pressure switch hose.	• Turn power OFF
low stage gas with high	9	switch circuit does not	pinched or connected	Repair, if necessary.	prior to repair.
stage induced draft blower		close in response to	improperly.	• Inspect flue and/or inlet air	• Replace pressure
• High stage circulator		high stage induced	• Blocked flue and/or inlet air	piping for blockage, proper	switch with proper
blower (temperature, of	9 FLASHES	draft blower operation.	pipe, blocked drain system, or	length, elbows, and termina- replacement part.
conditioned air, lower than			weak induced draft blower.	tion. Check drain system.
typical).			• Incorrect pressure switch	Correct as necessary.
• Integrated control module			setpoint or malfunctioning	• Correct pressure switch
diagnostic LED is flashing			switch contacts.	setpoint or contact motion.
NINE (9) flashes.			• Loose or improperly connected	• Tighten or correct wiring
			wiring.	connection.
• Furnace fails to operate.		• Polarity of 115 volt	• Polarity of 115 volt AC	• Review wiring diagram to	• Turn power OFF
• Integrated control module	C	power is reversed.	power to furnace or	correct polarity.	prior to repair.
diagnostic LED is flashing			integrated control module is
SIX (6) flashes.			reversed.	• Verify proper ground.
	CONTINUOUS		• Poor unit ground.
				Correct if necessary.
	FLASHING			• Check and correct wiring.

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