Carrier 38AK008 Troubleshooting Guide

1 38AK008,009,012 Air-Cooled Condensing Units 50 Hz Installation, Start-Up and Service Instructions CONTENTS

10 TROUBLESHOOTING GUIDE SYMPTOM CAUSE REMEDY Compressor does not run contactor open Power off. Restore power. Fuses blown. Replace with correct fus

11 START-UP CHECKLIST I. Preliminary Information OUTDOOR: MODEL NO. _______________________________ SERIAL NO. ____________________________________ I

12 CHECK VOLTAGE IMBALANCE LINE-TO-LINE VOLTS: AB________ V AC________ V BC ________V (AB + AC + BC)/3 = AVERAGE VOLTAGE = _________ V MAXIMUM DEVIAT

2 Table 1A — Physical Data — English UNIT 38AK 008 009 012 OPERATING WEIGHT (lb) Aluminum Coils (Standard) 510 564 564 Copper Coils (Optional)

3 Table 1B — Physical Data — SI UNIT 38AK 008 009 012 OPERATING WEIGHT (kg) Aluminum Coils (Standard) 231 256 256 Copper Coils (Optional)

4 CONSIDER SYSTEM REQUIREMENTS • Consult local building codes and NEC for special installation requirements. • Allow sufficient space fo

5 FILTER DRIER AND MOISTURE INDICATOR —Moisture indicator and filter drier should be installed in liquid line. Do not use a receiv

6 Table 5 – Electrical Data UNIT 38AK NOMINAL VOLTAGE VOLTAGE RANGE COMPRESSOR OFM POWER SUPPLY (V-ph-Hz) MIN MAX RLA LRA FLA MCA MOCP 008 220-3-50

7 START-UP Preliminary Checks 1. Field electrical power source must agree with unit nameplate acting. 2. Check that all internal wiri

8 temperature shuts unit off temporarily until space temperature exceeds thermostat setting.) Unit shuts down on any safety trip and remains of

9 Fig. 5 – September Coil Section Compressor Removal — See Tables 1A and 1B for compressor information. Follow safety codes and wear saf