Friedrich RAC-SVC-06 service manual Problem Possible Cause Action

Problem	Possible Cause	Action
	Overload inoperative. Opens too	Check operation of unit. Replace overload if
	soon	system operation is satisfactory
	Compressor restarted before	Allow a minimum of 2 minutes to allow
		pressures to equalize before attempting to
	system pressures equalized
		restart. Instruct customer of waiting period
		Check voltage with unit operating. Check for
Compressor runs	Low or fl uctuating voltage	other appliances on circuit. Air conditioner
for short periods		should be in separate circuit for proper voltage
only. Cycles on		& fused separately
overload	Incorrect wiring	Refer to appropriate wiring diagram
	Shorted or incorrect capacitor	Check by substituting a known good capacitor
		of correct rating
	Restricted or low air fl ow through	Check for proper fan speed or blocked
	condenser coil	condenser
	Compressor running abnormally	Check for kinked discharge line or restricted
	hot	condenser. Check amperage

Problem	Possible Cause	Action
	Loss of charge in t-stat bulb	Place jumper across t-stat terminals to check if
T-stat does not		unit operates. If unit operates, replace t-stat.
turn unit on	Loose or broken parts in t-stat	Check as above
	Incorrect wiring	Refer to appropriate wiring diagram

Problem	Possible Cause	Action
	Poorly installed	Refer to Installation Manual for proper
		installation
	Fan blade striking chassis	Reposition - adjust motor mount
Noisy operation		Check that compressor grommets have not
	Compressor vibrating	deteriorated. Check that compressor mounting
		parts are not missing
	Improperly mounted or loose	Check assembly & parts for looseness,
	cabinet parts	rubbing & rattling

Problem	Possible Cause	Action
	Evaporator drain pan overfl owing	Clean obstructed drain trough
	Condensation forming on base pan	Evaporator drain pan broken or cracked.
		Reseal or replace
	Poor installation resulting in rain	Check installation instructions. Reseal as
Water leaks into	entering the room	required
the room	Condensation on discharge grille	Clean the dirty evaporator coil. Use pressure
	louvers	wash or biodegradable cleaning agent to clean
	Chassis gasket not installed	Install gasket, per Installation manual
	Downward slope of unit is too	Refer to installation manual for proper
	steep	installation

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