Carrier T--298 Insufficient COOLING, Cooling AIR not Adequate, Condenser AIR not Adequate

	SYSTEM AND PROBABLE CAUSE		PROBABLE REMEDY
2.6 CYCLES ON COMPRESSOR OVERLOAD
1.	Defective run capacitor	1.	Replace capacitor -- Refer to Paragraph 3.5.8
2.	Defective compressor bearings or valves	2.	Replace unit.
3.	Greatly restricted evaporator air, iced evaporator	3.	Defrost evaporator coil.
	coil.
4.	Low refrigerant charge	4.	Replace unit.
5.	Evaporator capillary restricted
		5.	Replace unit.
6.	Liquid line restricted
		6.	Replace unit.
7.	Compressor hot
		7.	Verify refrigerant charge.
			Check AMP draw.
8.	Weak or inconsistent line power		Check ∆ T.
		8.	Check line voltage at time of compressor start--up.
2.7 INSUFFICIENT COOLING, COOLING AIR NOT ADEQUATE
1.	Dirty evaporator coil	1.	Clean as required.
2.	Iced evaporator coil, slightly low refrigerant charge	2.	Defrost or Recharge.
3.	Improper fan operation	3.	Verify fan rotation (Refer to wiring diagram)
4.	Defective fan motor	4.	Replace fan motor.
5.	Return air filter is dirty	5.	Remove and clean filters (Refer to paragraphs 3.3.1
			& 3.4.1)
2.8 CONDENSER AIR NOT ADEQUATE
1.	Outside Air Restricted	1.	Check for obstruction at coil. Remedy as required.
2.	Dirty coil	2.	Clean coil.
3.	Defective fan motor	3.	Replace fan motor.
2.9 INSUFFICIENT COOLING
1.	Unit undersized	1.	Re--evaluate unit for proper capacity.
2.	Capillary restricted	2.	Check AMP draw.
			Check ∆ T.
			Replace unit.
2.10 COMPRESSOR FLOODING
1.	Unit overcharged	1.	Check AMP draw.
			Check ∆ T.
			Replace unit.
2.	Low evaporator airflow	2.	Clean filter and/or evaporator coil.
3.	Defective electrical connections	3.	Check connections per wiring diagram and tighten
			any loose connections.
2.11 HEATER CYCLES ON LIMIT SWITCH (HEAT/ COOL VERSION ONLY)
1.	Dirty filter	1.	Clean or replace filter.
2.	Blocked evaporator air inlet (indoor)	2.	Remove blockage.
3.	Low airflow due to fan motor speed	3.	Check fan motor. Repair or replace as necessary.
2.12 AIR SWEEP NOT WORKING (FREE BLOW VERSION ONLY)
1.	Ceiling grill not properly aligned	1.	Align ceiling grill.
2.	Linkage in upper control box stuck	2.	Align and lubricate linkage.
3.	Air sweep motor failure	3.	Replace motor.
2.13 WATER LEAKAGE
1.	Water dripping from ceiling unit.	1.	Verify vehicle is level
			Tighten unit mounting bolts evenly or replace unit
			gasket.

T--298 2-2