Haier HSU-12HA03/Z1 [3/32] General information

Haier air conditioner Edition: 1.0-061128

- 3 -

1. 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 services who troubleshoot and repair these

units.

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.

NOTE: 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 heat exposure, which may cause death or severe illness, air conditioner must be

monitored when failures or shuts down.

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.