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Carrier 42NQ012N User Manual

Carrier 42NQ012N
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FILE NO. SVM-10031
42NQ012N / 38NY012N
SERVICE MANUAL
AIR-CONDITIONER
SPLIT WALL TYPE
1
2
A
M
P
M
X
April, 2010
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Carrier 42NQ012N Specifications

General IconGeneral
Cooling Capacity12000 BTU/h
RefrigerantR410A
Net Weight (Indoor Unit)9 kg
Power Supply220-240V, 50Hz
Operating Temperature (Cooling)18°C

Summary

Specifications

Construction Views

Indoor Unit Construction Details

Provides detailed diagrams of the indoor unit's physical structure and dimensions.

Outdoor Unit Construction Details

Shows diagrams of the outdoor unit's physical structure, dimensions, and air flow.

Wiring Diagram

Electrical Parts Specifications

Indoor Unit Electrical Components

Lists and specifies electrical parts for the indoor unit.

Outdoor Unit Electrical Components

Lists and specifies electrical parts for the outdoor unit.

Refrigeration Cycle Diagram

Control Block Diagram

Operation Description

Remote Control Functions and Operation

Explains remote control buttons, their functions, and how to operate the unit.

Air Conditioner Control Overview

Explains the roles of indoor and outdoor unit controllers and fan control.

Operation Mode Descriptions

Details the operation of Automatic, Fan Only, Cooling, and Dry modes.

Safety and Reliability Functions

Details safety and reliability prevention functions like temp limits and defrost.

Hi POWER and ECO Modes

Describes Hi POWER mode for faster operation and ECO mode for energy saving.

Filter Check Lamp Indicator

Explains how to turn off the filter indicator light after cleaning.

Auto Restart Function Setup

Details how to set and cancel the auto restart function for power failures.

Installation Procedure

General Installation Safety Precautions

Provides crucial safety warnings for installing the air conditioner, especially with R410A.

Installation Diagrams

Illustrates the placement and mounting of both indoor and outdoor units.

Installation Components and Fixing

Lists parts, tools, and fixing methods for installation.

Indoor Unit Installation

Covers location, wall cutting, electrical, piping, drainage, and fixing for indoor units.

Outdoor Unit Installation

Covers location, piping, evacuation, wiring, and remote control settings for outdoor units.

Test Operation and Settings

Covers test operations like gas leak test and auto restart setting.

Troubleshooting Chart

Troubleshooting Procedure Overview

Guides users through the troubleshooting process, starting with basic checks.

Basic Troubleshooting Checks

Covers essential checks like power supply and cable connections before fault diagnosis.

Primary Fault Judgement

Explains how to judge faults via indicators and controller roles.

Remote Controller Self-Diagnosis

Guides service mode usage and check codes for diagnosis.

Troubleshooting Check Codes and Actions

Lists fault codes, symptoms, and recommended actions for diagnosing unit issues.

Troubleshooting Flowcharts

Flowcharts to diagnose various operational issues like no power or fan failure.

Remote Control Troubleshooting

Diagnoses issues with remote control communication and P.C. board.

Main Parts Replacement Guide

Indoor Unit Component Replacement

Instructions for replacing main components of the indoor unit, starting with the front panel.

Outdoor Unit Component Replacement

Procedures for replacing outdoor unit components like cabinets and capacitors.

Exploded Views and Parts List

Indoor Unit Parts List (E-Parts)

Exploded view and part number list for indoor unit electronic components.

Indoor Unit Parts List

Exploded view and part number list for indoor unit components.

Outdoor Unit Parts List

Exploded view and part number list for outdoor unit components.

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