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Air Conditioner Edition:2006/1/10
CAUTION
READ THIS MANUAL CAREFULLY TO
DIAGNOSE TROUBLE CORRECTLY
BEFORE OFFERING SERVICE .
SERVICE MANUAL
Air Conditioners MODEL: HSU-
HSU-12HD03/R2
THIS MANUAL IS USED BY
QUALIFIED APPLIANCE
TECHNICIANS ONLY. HAIER
DOES NOT ASSUME ANY
RESPONSIBILITY FOR PROPERTY
DAMAGE OR PERSONAL INJURY
FOR IMPROPER SERVICE
PROCEDURES DONE BY ONE
UNQUALIFIED PERSON.
REVISION 0
Air Conditioner Edition:2006/1/10
IMPORTANT INFORMATION MODEL: HSU-12HD03/R2
Features
Comfortable: wide-angle airflow
health air purifying
quiet operation
super energy efficient
Main Specification
Cooling Capacity 3500W
Rated Power/Current(cooling) 1090W/5.2A
EER: 3.21
Heating Capacity 3650W
Rated Power/Current(heating): 1010W/5.0A
COP: 3.61
Air Volume(Indoor): 500m3/h
Power: 1PH 220-230V~ 50 Hz
Air Conditioner Edition:2006/1/10
Safety Information
General Information
This Service Manual describes the operation,disassembly,troubleshooting,and repair of Haier Room Air
Conditioners,etc. It is intended for use by authorized servicers who troubleshoot and repair these units.
NOTE:It is assumed that users of this manual are familiar with the use of tools and equipment used to
troubleshoot and repair electrical,mechanical,and refrigeration systems;and understand the terminology
used to describe and discuss them.
Haier urges you read and follow all safety precautions and warnings contained in this manual. Failure
to comply with safety information may result in severe personal injury or death.
Related Publications
This is a base service manual,covering a range of similar models.It is intended to be used in
conjunction with the Parts Manual and Technical Sheet covering specific model being serviced.
General Precautions and Warnings
WARNING
To avoid risk of personal injury or death due to electrical shock,disconnect electrical power to unit
before attempting to service the unit.
WARNING
To avoid risk of personal injury or death due to electrical shock,DO NOT,under any circumstances,alter
the grounding plug .Air conditioner must be grounded at all times.Do not remove warning tag from power
cord.If a two-prong (non-grounding) wall receptacle is encountered,contact a qualified electrician and
have the receptacle replaced with a properly grounder wall receptacle in accordance with the National
Electrical Code.
WARNING
To avoid risk of personal injury or death due to electrical shock,grounding wires and wires colored like
grounding wires are NOT to be used as current carrying conductors.The standard accepted color coding
for ground wires is green or green with a yellow stripe.Electrical components such as the compressor
and fan motor are grounded through an individual wire attached to the electrical component and to
another part of the air conditioner.Grounding wires should not to be removed from individual components
while servicing,unless the component is to be removed and replaced.It is extremely important to replace
all removed grounding wires before completing service.
WARNING
To avoid risk of heat exposure,which may cause death or severe illness,air conditioner must be
monitored when malfunctions or shuts down.
Air Conditioner Edition:2006/1/10
CONTENTS
1.SPECIFICATION...............................................................................1
2.ACCESSORIES ................................................................................3
4.OPERATION......................................................................................5
5.ELECTRI CAL CONTROLL............................................................. 21
6.TROUBLE SHOOTING...................................................................28
7. INSTALLA TION...............................................................................33
8. CIRCUIT AND WIRING DIAGRAM.............................................42,44
Air Conditioner Edition:2006/1/10
SPECIFICATION
1
Air Conditioner Edition:2006/1/10
Model HSU-12HD03/R2 Brand Mark -----
Cooling Capacity 3500W Frequency Range 50Hz
Rated Power/Current 1090W/5.2A Power 1PH 220-230V~ 50 Hz
Cooling
Max Power/Current 1620W/8.3A --------
Model