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5. Trouble Shooting
Cause of
Trouble
Condition Mechanism of Fault Generation
Whirlwind
Blocking of the front part of
outdoor devices
Frequent turning-off of the compressor
: Inflow of high-temperature air generated by
outdoor fans into the air conditioner
→ Wrong influence to the system in over-load
state
Installation of outdoor devices
in narrow space
Shielding
Blocking of the lateral suction
point on the wall of the outdoor
devices
Foreign substances in the heat
exchanger and obstacles in the
surrounding
Frequent turning-off of the compressor
: Elevation of the pipe temperature due to
reduced wind velocity
→ Wrong influence to the system in over-load
state
Corrosion
Possible infiltration of moisture
/ highly humid area
Corrosion of heat exchanger → Reduced opera-
tion efficiency → Transfer of troubles to other
parts
■
When the front/back has a wall (1 side)
■ When the front/back/left/right have walls (3 sides)
Checking outdoor devices for shielding
300 mm
700 mm
1.2 m
(Wind direction)
300 mm
300 mm
700 mm
6.7 Troubleshooting Outdoor Error
CH 21 (DC Peak / Comp IPM Fault)
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