Carrier - 38EV036320

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Contents

HEATING A COOLING 38EV QV Variable Speed Systems Operation Service and Troubleshooting For Models 38EV024320 38EV036320 38QV024320 38QV036320 CONTENTS INTRODUCTION Step 1 General System Description 1 Step 2 Component Functional Description 1 Outdoor Unit Components Indoor Unit Components Step 3 Sequence Of Operation 7 Step 4 VVT II Thermostat Operation Troubleshooting 13 Step 5 System Troubleshooting 15 Self Diagnostics Error Codes System Malfunctions No Error Code Step 6 Service and Maintenance 40 NOTE Malfunction of certain electronic control compo nents can cause lack of Automatic Emergency Heat initia tion See Service and Maintenance section for corrective servicing procedures INTRO...