Fault Finding
Preliminary Electrical Systems Check
START
Isolate appliance and carry out:
A:Earth Continuity check.
NO YES
Carry out:
C:Polarity check.
Brown Blue
Blue
Brown Green
Yellow
Carry out:
D:Resistance to Earth check.
Has inlet fuse blown?
NO
Inlet wiring
YES | Electricity supply |
| |
| should now be |
|
|
| satisfactory. |
|
|
|
|
|
|
PLUG (with cover removed) | S O C K E T | ||
(face view)
faulty. Rectify any fault.
Earth Wire Green/Yellow
Neutral Wire Blue 
( | ) |
| FUSE |
N
E(
)
L
Isolate appliance and carry out:
B:Insulation check. Rectify any fault including replacing fuses as necessary.
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