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SERVICE MANUAL
Wall Mounted Type
DC Inverter T-Series
Model No.
1U26BA1ERA
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
Repair the product or products dealt with in this service information by anyone else could result in serious injury or death
2016 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Version：V1
Date：2016-10-30
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Table of Contents
Related Manuals for Haier 1U26BA1ERA
Summarization of Contents
1 Introduction
1.1 Model Name Explanation
Explanation of the model number and its components.
1.2 Safety Cautions
1.2.1 Caution in Repair
Safety warnings and precautions for conducting repair work.
1.2.2 Cautions Regarding Products after Repair
Safety guidelines for post-repair handling and installation.
1.2.3 Inspection after Repair
Procedures and checks required after completing repairs.
1.2.4 Using Icons
Explanation of icons used in the manual for important information.
7 Functions and Control
7.1 Main Functions and Control Specification
Details on the main operational functions and control specifications.
10 Service Diagnosis
10.1 Caution for Diagnosis
Important warnings and precautions before performing diagnosis.
10.2 Problem Symptoms and Measures
Common problems, their symptoms, and recommended troubleshooting steps.
10.3.1 Thermistor or Related Abnormality
Diagnosis and handling of errors related to thermistors.
10.3.4 Outdoor DC Fan Motor Fault
Troubleshooting for faults related to the outdoor DC fan motor.
10.3.12 High Work-Intense Protection
Diagnosis and resolution for high work-intense protection mode.
11 Performance and Curves Diagrams
11.1 Cooling Capacity Temperature Curves
Graphs showing cooling capacity based on temperature variations.
11.3 Heating Capacity Temperature Curves
Graphs illustrating heating capacity at different temperature conditions.
11.5 Cooling Discharge Pressure Curves
Curves detailing cooling discharge pressure at various operational temperatures.
11.8 Heating Suction Pressure Curves
Charts showing heating suction pressure across different temperature ranges.
13 Circuit Diagrams
13.1 Outdoor Unit Control Board Circuit Diagrams
Schematic diagrams for the outdoor unit's control board.
13.2 Module Board Circuit Diagram
Circuit diagram detailing the module board.
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