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Carrier 38VMA120HDS5-1 - User Manual

Carrier 38VMA120HDS5-1
112 pages
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38VMH072-432
Outdoor Unit for
Variable Refrigerant Flow (VRF) Heat Pump System
Service Manual
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 17-38VMH001-06 Printed in U.S.A. Form 38VMH-1SM Pg 1 10-17 Replaces: NEW

Table of Contents

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Carrier 38VMA120HDS5-1 Specifications

General IconGeneral
BrandCarrier
Model38VMA120HDS5-1
CategoryAir Conditioner
LanguageEnglish

Summary

General Information

Refrigerant Charge Calculation

Provides the formula and method for calculating refrigerant charge.

Refrigerant Circuit

Function and Control

Compressor Control

Details compressor operating priority and frequency settings.

Protection Control

High Pressure Protection Control

Protects the compressor from excessive system pressure.

Low Pressure Protection Control

Protects the compressor from low system pressure.

Discharge Pipe Protection Control

Prevents damage from high discharge pipe temperatures.

Inverter Protection Control

Safeguards the inverter against overcurrent and overheating.

Troubleshooting

0 E0: Communication Fault Between ODUs

Diagnoses and resolves communication errors between outdoor units.

0 E2: Communication Error Between ODU and IDU

Troubleshoots communication failures between outdoor and indoor units.

0 E5: Voltage Protection

Diagnoses and resolves system voltage protection issues.

0 P1: Current Leakage Error

Identifies and rectifies current leakage detection faults.

0 P2 0 H5: Low Pressure Protection

Troubleshoots low pressure protection errors and causes.

0 P3: Over Current Protection for Compressor

Resolves compressor overcurrent protection faults.

L0~L9 10 H4; 20 H4: Compressor INV Module Protection

Details protection functions for the compressor inverter module.

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