Maytag P12, PEFY-P06, P15, P18, P24 NMSU-E, P08 operation manual Troubleshooting

6. Troubleshooting

	Before you ask for repair service, check the following points:
		State of Machine	Remote Controller	Cause	Troubleshooting
			“'” display is not lit up.	Power failure	Press the [ON/OFF] button after power restoration.
		It does not run.	No display appears even	The power supply is turned OFF.	Turn the power supply ON.
			when the [ON/OFF] but-	The fuse in the power supply is gone.	Replace fuse.
			ton is pressed.	The earth leakage breaker is gone.	Put in the earth leakage breaker.
					After checking the set temperature and inlet temperature
				Improper temperature adjustment	on the liquid crystal display, refer to [Room temperature
		Air flows out but it does	The liquid crystal display		adjustment], and operate the adjustment button.
					Clean up the filter.
		not cool enough or heat	shows that it is in the	The filter is filled with dust and dirt.
					(Refer to [Caring for the machine].)
		enough.	state of operation.
				There are some obstacles at the air inlet and outlet of	Remove.
				the indoor and outdoor units.
				Windows and doors are open.	Close.
					Wait for a while.
					(To protect the compressor, a 3-minute restart-preventing
GB			The liquid crystal display	The restart-preventing circuit is in operation for 3 min-	circuit is built into the indoor unit. Therefore, there are occa-
		Cool air or warm air		utes.	sions sometimes when the compressor does not start run-
			shows that it is in opera-
		does not come out.			ning immediately. There are cases when it does not run for
			tion.
					as long as 3 minutes.)
				Indoor unit operation was restarted during the heating	Wait for a while.
				and defrosting operation.	(Heating operation starts after ending defrosting operation.)
			The “check” and check	There are some obstacles at the air inlet and outlet of	Rerun after removal.
		It runs briefly, but soon		the indoor and outdoor units.
			code flashes on the liquid
		stops.		The filter is filled with dust and dirt.	Rerun after cleaning the filter. (Refer to [Caring for the ma-
			crystal display.
					chine].)
		The sound of the ex-		When other indoor units are engaged in cooling opera-
		haust and rotation of	All lights are out except
				tion, the machine stops after running a drain-up mecha-
		the motor can still be	the powered display of		Wait for 3 minutes.
				nism for 3 minutes when air-cooling operation is
		heard after stop of run-	“'”.
				stopped.
		ning.
		The sound of the ex-		When other indoor units are engaged in cooling opera-
		haust and the rotation	All lights are out except
				tion, drained water is brought in. If the drain water is	It soon stops. (If the noise occurs more than 2-3 times in an
		of the motor can be	the powered display of
				collected, the drain-up mechanism initiates a draining	hour, ask for repair service.)
		heard intermittently af-	“'”.
				operation.
		ter stop of running.
		Warm air comes out in-	The liquid crystal display	When other indoor units are engaged in heating op-
		termittently when the			It soon stops. (If the room temperature rises uncomfortably
			shows that it is in the	eration, the control valves are opened and closed from
		thermostat is OFF or			high in a small room, stop operation.)
			state of operation.	time to time to maintain the stability of the system.
		during fan operation.

•If operation stops due to a power failure, the [restart-preventing circuit at power failure] operates and disables unit operation even after power restoration. In this case, press the [ON/OFF] button again and start operation.

If malfunctions persist after you have checked the above, turn the power supply OFF and contact your dealer with information about the product name, the nature of the malfunction, etc. If the display of “[check]” and (4 digit) check code flashes, tell the dealer contents of the display (check code). Never attempt to repair by yourself.

The following symptoms are not air conditioner failures:

•The air blown out from the air conditioner can sometimes give off odors. This is due to cigarette smoke contained in the air of the room, the smell of cosmetics, the walls, furniture, etc., absorbed in the air conditioner.

•A hissing noise can be heard immediately after the air conditioner is started or stopped. This is the sound of the refrigeration flowing inside the air conditioner. This is normal.

•The air conditioner sometimes snaps or clicks at the beginning or end of cooling/heating operation. This is the sound of friction on the front panel and other sections due to expansion and contraction caused by temperature change. This is normal.

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KB79K384H01_en.p65 8 08.1.22, 6:02 PM