Friedrich R-410A service manual General Troubleshooting Tips, Unit does not operate

GENERAL TROUBLESHOOTING TIPS

Problem	Possible Cause	Possible Solution
	The unit is turned to the off position,	Turn the unit to the on position and raise or
		lower temperature setting (as appropriate) to
		call for operation.
		Plug into a properly grounded 3 prong
	The LCDI power cord is unplugged.	receptacle. See “Electrical Rating Tables” on
		pg. 6 for the proper receptacle type for your
		unit.
Unit does not operate.	The LCDI power cord has tripped	Press and release RESET (listen for click;
		Reset button latches and remains in) to resume
	(Reset button has popped out).
		operation.
	The circuit breaker has tripped or	Reset the circuit breaker, or replace the fuse as
		applicable. If the problem continues, contact a
	the supply circuit fuse has blown.
		licensed electrician.
	There has been a local power	The unit will resume normal operation once
	failure.	power has been restored.
	Other appliances are being used on	The unit requires a dedicated outlet circuit, not
	the same circuit.	shared with other appliances.
	An extension cord is being used.	Do NOT use an extension cord with this or any
Unit Trips Circuit Breaker or		other air conditioner.
		Replace with a circuit breaker or time-delay
Blows Fuses.
	The circuit breaker or time-delay	fuse of the proper rating. See “Electrical
		Rating Tables” on pg. 6 for the proper circuit
	fuse is not of the proper rating.
		breaker/fuse rating for your unit. If the problem
		continues, contact a licensed electrician.
	The LCDI power cord can trip	Press and release RESET (listen for click;
	(Reset button pops out) due to
		Reset button latches and remains in) to resume
	disturbances on your power supply
		normal operation.
	line.
LCDI Power Cord Trips (Reset	Electrical overload, overheating, or	Once the problem has been determined and
Button Pops Out).	cord pinching can trip (Reset button	corrected, press and release RESET (listen for
	pops out) the LCDI power cord.	click; Reset button latches and remains in) to
		resume normal operation.
	NOTE: A damaged power supply cord must be replaced with a new power supply cord
	obtained from the product manufacturer and must not be repaired.
	The return/discharge air grille is	Ensure that the return and/or discharge air
		paths are not blocked by curtains, blinds,
	blocked.
		furniture, etc.
	Windows or doors to the outside are	Ensure that all windows and doors are closed.
	open.
	The temperature is not set at a cool	Adjust the Temperature control to a cooler or
	enough/warm enough setting.	warmer setting as necessary.
Unit Does Not Cool/Heat		remove obstruction.
On And Off Too Frequently.
	The indoor coil or outdoor coil is	Clean the coils, (See Routine Maintenance), or
	dirty or obstructed.	remove obstruction.
		Be sure to use exhaust vent fans while cooking
	There is excessive heat or moisture	or bathing and, if possible, try not to use heat
	(cooking, showers, etc.) in the room.	producing appliances during the hottest part of
		the day.
	The temperature of the room you	Allow additional time for the air conditioner to
	are trying to cool is extremely hot.	cool off a very hot room.

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