AUX ASW-07B4/HSAR, Service Manual

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COOL indoor unit electric connection diagram HEAT PUMP indoor unit electric connection diagram
COOL indoor unit electric chart HEAT PUMP indoor unit electric chart
Chapter 8 Fault Analysis of the Product Available and
Typical Examples
1 Procedure of deciding the faults
Before maintaining the air conditioner, firstly you should know the
phenomena of the faults, decide the location of the faults, analyze the
reason the faults occur, and then search for ways to solve the faults. The
detailed procedures are: Look, Listen, Touch, Measure, Analyze
Look: Observe air conditioner’s running. I.e., vibration;
condensation on evaporator; leakage; electrical and mechanical
connection, etc.
Listen: Listen to kinds of sounds of the running air conditioner.
Identify the abnormal noise from the sounds.
Touch: Touch the key position and position faulty. Touch the temp
of air circulation to decide the heating or cooling effect; as far to
abnormal sound, besides adopt “listen”, you should touch the frame, the
pipe of the air conditioner to feel the vibration. Touch the easily heated
parts, i.e. compressor, motor, touch them to feel the temp.(Warning: High
temp).
Measure: Measure the parameters of the air conditioner and
relevant parts by some instruments. Usually used instruments:
amperemeter, voltmeter
multimeter thermometer, etc, i.e., Use
multimeter to test whether the capacitor is open, the insulation of the wire
and the parameters of other electrical parts; use the thermometer to
measure temp of airflow.
Analyze: Analyze the above results, decide the reason and location
of faults, and seek the solutions.
2
Types of Normal Faults