Service manual
•
window type series
15
8.4 Horizontal Auto deflection does not work
8.5 Poor cooling
Is the coil resistance of step
motor 10.5K
Ω±
20%?
Is the Auto deflector switch
set properly?
Is the Auto deflector switch
proper?
Replace the step motor.
Press one end with “I” mark on the Auto
deflector (only for mechanical type).
Yes
Yes
No
No
The Operation switch is defective.
Replace it
Yes
No
Poor cooling
performance
Is the temperature
set properly?
Change the set
temperature.
Is the heating load
too large?
Reduce heat source or
change the air conditioner
with large power.
The refrigerant is not enough.
Fill it.
The compressor is in error.
Replace it
.
The air
circulating
capacity is
not enough.
The air filter is blocked
.
Clean it.
The running speed of fan is
in “LOW”
.
Change it
to “HIGH”.
Yes
Yes
No
Refrigerant
flow is not
enough.
