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Symptom-based Troubleshooting
Si20-701_B
35
c
Output from
Compressor
Indoor unit PCB
Outdoor unit PCB
COMP
.
Magnetic
s
witch or
po
w
er
tr
ansistor
Suction air
ther
mistor
Input
to
PCB
Output
from
PCB
Input
to
PCB
e
Output from
rela
y or micro-
computer
d
Output from
magnetic
s
witch or SW
circuit of
po
w
er
tr
ansistor
Rela
y