Table of Contents
6.7 Troubleshooting Outdoor Error
CH 54 (Open and Reverse Phase Error)
Judgment Method of R,S,T phase loss
- Set the tester in AC voltage measurement mode (The part having wave pattern)
- The part that does not generate voltage was upgraded.
- Power module requires checking..
R
S
T
N
Judgment method of open and reverse phase of R,S,T
- Operation with replacement of R and S phases only
Brown B Black Green
R
S
T
Brown B Black Green
R
S
T
??
Vac
Vac
N
N
R
??
Vac
Vac
Brown B Black Green
R
S
T
N
B
Br
o
w
n
B
a l
c
k
Green
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5. Trouble Shooting
S
T
N
??
Vac
Vac
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