Carrier T--298 service manual Table of Contents

TABLE OF CONTENTS - Continued

3.4	CEILING UNIT - DUCTED SYSTEMS		3-4
3.4.1		Filter Removal	3-4
3.4.2		Ceiling Grill Removal	3-4
3.4.3		Control Box Assembly Removal	3-4
3.4.4		Main PCB Board Removal	3-5
3.4.5		PCB Display Removal	3-5
3.4.6		Fuse Removal	3-5
3.5 SERVICE - UPPER UNIT - STANDARD, HC & HP			3-5
3.5.1		Exterior Cover Removal	3-5
3.5.2		Compressor Replacement	3-6
3.5.3		Control Box Assembly Removal	3-6
3.5.4		Upper Scroll Assembly Removal	3-7
3.5.5		Motor Assembly and Condenser Fan Removal	3-7
3.5.6		Evaporator Blower Wheel Adjustment or Removal	3-8
3.5.7		Air Handling System Removal	3-8
3.5.8		Capacitor Troubleshooting	3-9
3.5.9		Capacitor Testing and Replacement	3-9
3.5.10		Positive Temperature Coefficient Thermister (PTC) (Start Thermistor) Troubleshooting	3-9
3.5.11		Line Voltage - 10%	3-9
3.6	SERVICE - UPPER UNIT - LOW PROFILE		3-10
3.6.1		Exterior Cover Removal	3-10
3.6.2		Upper Scroll Assembly Removal	3-10
3.6.3		Condenser Fan Assembly Removal	3-11
3.6.4		Condenser Motor Removal	3-12
3.6.5		Evaporator Motor/Blower Assembly Removal	3-12
3.6.6		Compressor Replacement	3-13
3.6.7		Capacitor Removal	3-13
3.6.8		Remote Control (Fahrenheit to Celsius)	3-13
3.7 THERMOSTAT INSTALLATION AND START-UP INSTRUCTIONS (WALL MOUNTED)			3-15
3.7.1		Introduction	3-15
3.7.2		Installation	3-15
3.7.3		Thermostat Location	3-15
3.7.4		Install Thermostat - 12VDC	3-15
3.8	LCD DISPLAY		3-15
3.8.1		Cool Only Thermostat	3-15
3.8.2		Heat/Cool Thermostat	3-15
3.9	SET THERMOSTAT CONFIGURATION		3-15
3.9.1		Enter Configuration Mode	3-15
3.10	CHECK THERMOSTAT OPERATION		3-16
3.10.1 Fan Operation (Cool Only)			3-16
3.10.2 Fan Operation (Heat/Cool)			3-16
3.10.3 Cooling Operation (Cool Only)			3-16
3.10.4 Cooling Operation (Heat/Cool)			3-16
3.10.5 Heating Operation (Heat/Cool)			3-16

T--298

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