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Haier 1U35S2SM1FA-2 - User Manual

Haier 1U35S2SM1FA-2
57 pages
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Domestic air conditioner
SERVICE MANAUL
Wall Mounted Type
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

WARNING
2017 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
VersionV1
Date2021-04-23
F-Series
1U35S2SM1FA-2
Model No.
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Haier 1U35S2SM1FA-2 Specifications

General IconGeneral
TypeSplit System
RefrigerantR32
Cooling Capacity3.5 kW
Energy Efficiency Ratio (EER)3.21
Coefficient of Performance (COP)3.61
Operating Temperature (Heating)-7-24°C
Cooling Capacity (BTU)12, 000 BTU
Power Supply220-240V/50Hz
Air Flow (Indoor Unit)500 m3/h
Operating Temperature (Cooling)18°C to 43°C

Summary

Introduction

Model Name Explanation

Explains the meaning and structure of the model number for the air conditioner.

Safety Cautions

Embedded Wire Checking Before Installation

Details on checking embedded wire diameter and connections for safe installation.

Caution in Repair

Provides critical warnings and cautions for performing repair work safely.

Cautions Regarding Products After Repair

Lists important warnings and precautions to follow after completing repair work.

Inspection After Repair

Guidelines for inspecting the unit after repair work is completed.

Using Icons and Symbols

Specifications

Sensors List

Piping Diagrams

Operation Range

Printed Circuit Board Connector Wiring Diagram

Functions and Control

Main Functions and Control Specifications

Details the primary functions and control specifications of the unit.

Outdoor Unit Operation Frequency Control

Explains the control of the outdoor unit's operation frequency, including compressor starting and speed adjustments.

Outdoor Fan Control

Details the control logic and operating speeds for the outdoor fan.

Protection Functions

Compressor Over-Current and AC Current Protection

Details controls to prevent over-current and protect against AC current issues.

Anti-Freezing and Frequency Limitation Controls

Covers anti-freezing protection for the indoor heat exchanger and frequency modification limits.

Outdoor Refrigerating Coil Temperature Protection

Details temperature protection mechanisms for the outdoor refrigerating coil.

Dimensional Drawings

Center of Gravity

Service Diagnosis

Cautions and Appliance Parameters

Provides cautions for diagnosis and parameters of key electronic components.

Problem Symptoms and Measures

Lists common symptoms, check items, and recommended measures for troubleshooting.

Error Codes and Descriptions

Details error codes displayed on the indoor unit and their corresponding fault descriptions.

Thermistor or Related Abnormality Troubleshooting

Guides on diagnosing and resolving issues related to thermistors and their connections.

EEPROM Abnormal Troubleshooting

Troubleshooting steps for EEPROM errors, including data or PCB faults.

Indoor DC Fan Motor Malfunction

Diagnoses and provides troubleshooting steps for indoor DC fan motor issues.

Outdoor DC Fan Motor Fault

Troubleshooting guide for faults related to the outdoor DC fan motor.

IPM Protection Troubleshooting

Addresses IPM protection issues, including over-current, faulty components, and wiring.

Compressor Over-Current Protection

Details troubleshooting for compressor over-current faults and related power supply issues.

Communication Fault Between IPM and Outdoor PCB

Guides on diagnosing communication faults between the IPM and outdoor PCB.

Power Supply Over;Under Voltage Fault

Troubleshooting steps for faults related to abnormal power supply voltage.

Overheat Protection for Discharge Temperature

Addresses overheating protection related to the compressor discharge temperature.

Communication Fault Between Indoor and Outdoor Units

Troubleshooting steps for communication failures between the indoor and outdoor units.

Loss of Synchronism Detection

Diagnoses issues related to the compressor rotor position detection and synchronism.

High Work-Intense Protection

Explains high work-intense protection in heating mode due to heat exchanger thermistor limits.

Performance Curves

Cooling Capacity-Temperature Curves

Presents performance data showing cooling capacity at various temperature conditions.

Cooling Power Consumption Curves

Details power consumption in cooling mode across different temperature settings.

Cooling Discharge Pressure Curves

Illustrates discharge pressure performance in cooling mode at varying temperatures.

Cooling Suction Pressure Curves

Presents suction pressure performance in cooling mode against temperature variations.

Heating Capacity-Temperature Curves

Shows heating capacity performance based on indoor and outdoor temperatures.

Heating Power Consumption Curves

Details power consumption in heating mode relative to temperature conditions.

Heating Discharge Pressure Curves

Illustrates discharge pressure performance in heating mode at various temperatures.

Heating Suction Pressure Curves

Presents suction pressure performance in heating mode against temperature variations.

Sound Level Specifications

Outdoor Unit Control Board Circuit Diagrams

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