Carrier 38AE040 User Manual

Installation Manual

Carrier 38AE040 Specifications

General

Brand	Carrier
Model	38AE040
Category	Heat Pump
Language	English

Summary

Safety Considerations

Qualified Personnel Requirement

Only trained, qualified installers and service mechanics should install, start-up, and service this equipment.

Installation

Step 1: Complete Pre-Installation Checks

Perform unit uncrating, shipment inspection, and system requirement checks.

Step 2: Rig and Mount the Unit

Guidelines for rigging, mounting the unit, and compressor mounting before start-up.

Step 3: Complete Electrical Connections

Covers liquid line solenoid valve installation, piping, safety relief, and power wiring.

Pre-Start-Up Procedures

Evacuate and Dehydrate System

Leak Test System

Add Preliminary Refrigerant Charge

Troubleshooting Problems

Compressor Not Running Issues

Troubleshooting for compressor failure to start due to power, control, or safety device issues.

High-Pressure Switch Shutdowns

Low-Pressure Switch Cycling

Airflow Issues and Fan Faults

Compressor Oil and Refrigerant Issues

Compressor Loading/Unloading Faults

Wiring Diagrams

38AE020 / 38AF020 Wiring Details

Schematic, component arrangement, legend, and field installation for 38AE020 and 38AF020 models.

38AE025, 030, 040 / 38AF025, 030, 040 Wiring Details

Schematic, component arrangement, legend, and field installation for 38AE025/030/040 and 38AF025/030/040 models.

38AE050, 060 / 38AF050, 060 Wiring Details

Schematic, component arrangement, legend, and field installation for 38AE050/060 and 38AF050/060 models.

Control Module Operation

Initialization and Delay Timer

Compressor Operation Monitoring

OPS and LPS Monitoring

Start-Up Checklist

Pre-Start-Up Checks

Checklist for outdoor unit, controls, and piping integrity before starting the unit.

Start-Up Measurements and Verification

Recording evaporator/condenser fan speeds, operating measurements, and oil levels.