142
SR. NO.
SR. NO.
SR. NO.
SR. NO.
SR. NO.
PROBLEM OBSERVED
PROBLEM OBSERVED
PROBLEM OBSERVED
PROBLEM OBSERVED
PROBLEM OBSERVED
PROBABLE CAUSE
PROBABLE CAUSE
PROBABLE CAUSE
PROBABLE CAUSE
PROBABLE CAUSE
A
A
A
A
ACTION
CTION
CTION
CTION
CTION TTTTTO BE
O BE
O BE
O BE
O BE TTTTTAKEN
AKEN
AKEN
AKEN
AKEN
AIR CONDITIONING
AIR CONDITIONING
AIR CONDITIONING
AIR CONDITIONING
AIR CONDITIONING
1.
Fan motor does not operate
Blown fuse
•
Replace fuse and correct any
wiring short
Faulty connection
•
Properly connect poor
connections
Faulty motor
•
Replace motor if no conductance
Faulty or poor
•
Replace resistor block if defective
connection at resistor
Faulty fan switch
•
Replace switch
2.
Motor operates but air flow
Obstruction at
•
Clean evaporator
is minimum
evaporator inlet
Air leak
•
Correctly seal
Faulty thermostat
•
Adjust or replace thermostat
3.
Insufficient cooling, Air flow
Incorrect refrigerant quantity or
•
Get the defect rectified at
normal and compressor
defect in system aggregates
nearest authorised service
operating
centre
PRELIMINAR
PRELIMINAR
PRELIMINAR
PRELIMINAR
PRELIMINARY
Y
Y
Y
Y TR
TR
TR
TR
TROUBLE SHOO
OUBLE SHOO
OUBLE SHOO
OUBLE SHOO
OUBLE SHOOTING
TING
TING
TING
TING
P R E L I M I N A R Y T R O U B L E S H O O T I N G