Mitsubishi Electric Plasma Quad Connect MAC-100FT-E Service Manual page 7

4.2 Failure diagnosis method of the Plasma Quad Connect
Perform failure diagnosis of the Plasma Quad Connect according to the following procedure.
Failure diagnosis of the
Plasma Quad Connect
Turn off the breaker of the
Plasma Quad Connect.
Short-circuit the JPS/JPG
on the printed circuit board
in the electrical box with a
crocodile clip, etc.
Install the filter cover.
Turn on the breaker of the
Plasma Quad Connect.
Plasma Quad Connect
will start up.
Is the operation lamp (or
LED 73 on the printed circuit
board) lit or blinking/off?*
Lit
Plasma Quad Connect
works normally.
* It will take up to about 5 seconds before the operation lamp (or LED73 on the printed circuit board) starts lit after turning
on the breaker.
OBH901
Blinking
Are the plasma electrode
/ Off
and the filter of the
Plasma Quad Connect
installed properly?
Replace the Plasma Quad
Connect as it operates
abnormally.
7
NO
Install the plasma electrode
and the filter properly.
YES