Service Manual MM18YJ-MM24YJ

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Start
Test voltage
value with Test
12 position in
diagram with
voltage meter
Number jumping
Outdoor unit
malfunction
Test voltage value with
Test 13(18K) 11(24K)
position in diagram with
voltage meter
Number jumping
Test voltage
value with Test
10 position in
diagram with
voltage meter
Number jumping
Test voltage value
with Test 11(18K)
13(24K) position in
diagram with volt-
age meter
Y
Y
Y
Y
Number jumping
The circuit of
outdoor unit
communication
is normal
Y
N
N
N
N
End