Carrier AirV 68RV15102A User Manual

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R

Transport Air Conditioning

T--298 Rev D

SERVICE MANUAL

for

MODEL AirV

Rooftop Air Conditioning Systems

R

Transport Air Conditioning

2P

C

F

H

1

2

BLK

BLU

WHT

WHT

EVAP.

GRN/YEL

WHT

BRN

1

2

YEL

RED

BLU

R

C

S

RED

PTC

BLU

Table of Contents

Questions and Answers:

D
dparksAug 8, 2025
How to troubleshoot no power to my Carrier AirV 68RV15102A Air Conditioner?
- S
  Stephanie HillAug 8, 2025
  If your Carrier Air Conditioner has no power, there are several potential causes. First, ensure the master switch is on; if it's off, reset it. Check the circuit breaker and reset it if it's open. Defective wiring, loose electrical connections, or faulty components like switches, the thermostat, or the fan can also be responsible; replace or tighten these as necessary. For ducted systems, ensure the 12 VDC is connected to the power source and that the in-line fuse is not open; connect or replace these if needed.
D
Dana LesterAug 17, 2025
What to do if the compressor power supply is open on my Carrier Air Conditioner?
- S
  sbrownAug 17, 2025
  If the compressor power supply is open in your Carrier Air Conditioner, check for loose leads at the compressor terminals and tighten them. If that's not the issue, the motor overload switch or the capacitor might be defective and need replacement. Open compressor windings or a seized compressor will also require replacement of the compressor. Lastly, verify the capacitor wiring according to the wiring diagram to ensure it's correctly wired.
C
Carol JacksonAug 29, 2025
Why does the compressor overload cycle on my Carrier Air Conditioner?
- C
  Courtney MurrayAug 29, 2025
  If your Carrier Air Conditioner compressor cycles on overload, it could be due to a defective run capacitor, which would need replacement. Other potential causes include defective compressor bearings or valves, a greatly restricted evaporator air flow (possibly due to an iced evaporator coil), a low refrigerant charge, or a restricted liquid line or evaporator capillary, all of which may require replacing the unit. A hot compressor may indicate a need to verify the refrigerant charge, check the AMP draw and delta T. Weak or inconsistent line power can also cause this issue, so check the line voltage at compressor start-up.

Carrier AirV 68RV15102A Specifications

General

Brand	Carrier
Model	AirV 68RV15102A
Category	Air Conditioner
Language	English

Summary

Safety Information

General Safety Notices

First Aid Procedures

Immediate first aid or medical attention is required for any injury, no matter how slight.

Operating Precautions

Precautions to follow during operation, including wearing safety glasses and keeping hands clear of fans.

Maintenance Precautions

Precautions for maintenance, including power disconnection, capacitor discharge, and wire labeling.

Specific Warnings and Cautions

Unit Safety Statements

Specific warnings and cautions applicable to the refrigeration unit, including safety during maintenance.

Section 2: Troubleshooting

2.1 No Power to Unit

Troubleshooting steps for when the unit has no power.

2.2 Ducted Unit Not Operating

Troubleshooting steps for ducted units that will not operate.

2.3 Ducted Unit Not Cooling

Troubleshooting steps for ducted units that are not cooling.

2.4 Compressor Power Supply Open

Troubleshooting steps for open compressor power supply.

2.5 Compressor Runs But Cycles, Fan Operating Erraticall

Troubleshooting steps for compressor cycling and erratic fan operation.

2.6 Cycles on Compressor Overload

Troubleshooting steps for units cycling on compressor overload.

2.7 Insufficient Cooling, Cooling Air Not Adequate

Troubleshooting steps for insufficient cooling or inadequate cooling air.

2.8 Condenser Air Not Adequate

Troubleshooting steps for inadequate condenser air flow.

2.9 Insufficient Cooling

Troubleshooting steps for general insufficient cooling.

2.10 Compressor Flooding

Troubleshooting steps for compressor flooding.

2.11 Heater Cycles on Limit Switch (Heat/ Cool Version Only)

Troubleshooting steps for heater cycling on limit switch for heat/cool units.

2.13 Water Leakage

Troubleshooting steps for water leakage from the ceiling unit.

2.14 Inadequate Heat (Free-Blow Heat Only)

Troubleshooting steps for inadequate heat in free-blow units.

2.15 Inadequate Heat (Heat-Pump)

Troubleshooting steps for inadequate heat in heat-pump units.

Clearing Diagnostic Alarms

Procedure for clearing diagnostic alarms after repairs.

Section 3: Service and Maintenance

3.1 Preventative Maintenance

3.3.1 Filter Removal (Free Blow)

3.4.1 Filter Removal (Ducted)

3.4.3 Control Box Assembly Removal (Ducted)

3.4.4 Main PCB Board Removal

3.5.1 Exterior Cover Removal (Upper Unit)

3.5.2 Compressor Replacement

Detailed procedures for replacing the compressor.

3.5.3 Control Box Assembly Removal (Upper Unit)

3.5.4 Upper Scroll Assembly Removal

3.5.5 Motor Assembly and Condenser Fan Removal

3.5.6 Evaporator Blower Wheel Removal

3.5.7 Air Handling System Removal

3.5.8 Capacitor Troubleshooting

Troubleshooting procedures for the capacitor.

3.5.9 Capacitor Testing and Replacement

Steps for testing and replacing the capacitor.

3.5.10 PTC (Start Thermistor) Troubleshooting

Troubleshooting the PTC start thermistor.

3.5.11 Line Voltage Check

Checking line voltage for proper operation and potential issues.

3.6.1 Exterior Cover Removal (Low Profile)

3.6.2 Upper Scroll Assembly Removal (Low Profile)

3.6.3 Condenser Fan Assembly Removal

3.6.4 Condenser Motor Removal

3.6.5 Evaporator Motor/Blower Assembly Removal

3.6.6 Compressor Replacement (Low Profile)

Procedures for replacing the compressor on low profile units.

3.6.7 Capacitor Removal (Low Profile)

3.7 Thermostat Installation and Start-Up (Wall Mounted)

3.7.2 Thermostat Installation

3.7.3 Thermostat Location Guidelines

3.7.4 Install 12VDC Thermostat

3.9 Set Thermostat Configuration

3.10 Check Thermostat Operation

3.11.5 Thermostat Error Messages

Description of thermostat error messages (E4, --) and remedies.

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