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Chapter 4: UNIT TROUBLESHOOTING PROCEDURES
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TM-9-4120-428-14 Air Conditioner Horizontal Compact 9000 BTU/HR 208 Volt Three Phase 400 Hertz Model No. F9000H-4SPFI Manual
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SYMPTOM INDEX
TM 9-4120-428-14
UNIT MAINTENANCE
AIR CONDITIONER, HORIZONTAL, COMPACT
TROUBLESHOOTING INDEX
USE OF TROUBLESHOOTING TABLE
Troubleshooting Procedures (Table 1) contains troubleshooting information useful to operators in diagnosing and correcting
malfunctions or unsatisfactory operation of the air conditioner. The table lists the common malfunctions an operator is most
likely to encounter. Corrective actions indicate what steps the operator should take.
The operator should determine the malfunction symptom that most closely describes the immediate situation and then
perform the corrective action steps in the order listed.
This manual does not list all possible malfunction symptoms that may be encountered, nor can it list all possible corrective
actions.
A malfunction or corrective action beyond the scope of the operator's capabilities must be reported to unit maintenance.
Table 1. Troubleshooting Procedures
MALFUNCTION 1
The Symptom Index contains troubleshooting information useful to unit maintenance technicians in diagnosing and
correcting malfunctions or unsatisfactory operation of the air conditioner.
The Troubleshooting Table (WP 0010 00) lists the common malfunction symptoms and unsatisfactory performance
characteristics that technicians are most likely to encounter. Included are the test and inspection steps to determine the cause
and the corrective action(s) that should be performed for each possible cause lifted.
The technicians should first find the malfunction symptom or unsatisfactory performance characteristic in the table that most
closely describes the immediate situation. Then perform the test and inspections, and determine corrective action steps in the
order in which they are listed.
This manual cannot list all possible situations that may be encountered, nor can it list all test and inspection and corrective
action steps that may be taken. If a condition is encountered that cannot be resolved within the capabilities and experience of
unit maintenance personnel, then assistance should be requested from direct support maintenance.
SYMPTOM INDEX
TROUBLE
MALFUNCTION NO.
Air Conditioner
Unit Does not Start -------------------------------------------------------------------------------------------- 1
Insufficient Cooling ------------------------------------------------------------------------------------------- 4
Unit Operates Continuously on Cooling Cycle -------------------------------------------------------------- 8
Unit Fails to Heat--------------------------------------------------------------------------------------------- 11
Excessive Noise ---------------------------------------------------------------------------------------------- 12
Evaporator
Evaporator Fan Does not Start-------------------------------------------------------------------------------- 2
Evaporator Fan Stops During Operation --------------------------------------------------------------------- 2
Evaporator Air Output Volume Low------------------------------------------------------------------------- 9
0009 00-1

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