Mitsubishi Electric City Multi PEFY-P30NMHU-E-F Technical & Service Manual page 18

OPERATING PROCEDURE
·
Models 72 96
1.Removing the control box cover
(1) Remove the fixing screws (four) of the control box cover (C),
and remove the cover. (Fig. 4)
*At this stage, the following servicing is possible.(Fig. 5)
1 Operation and check of the switches (listed below) which
are on the control board.
• Dip switch SW2 · · · · · · · · · · · Capacity code setting
• Dip switch SW3 · · · · · · · · · · · Function change
• Dip switch SW4 · · · · · · · · · · · Model code setting
2 Connection check of the lead wires (listed below) which are
connected to the controller board.
• Power supply lead wire.
• MA remote contoller transmission lead wire.
• Fan motor lead wire.
• LEV lead wire
• Intake air sensor lead wire
• Liquid piping sensor lead wire
• Gas piping sensor lead wire
• Power supply transformer lead wire
• Address board lead wire
(• Drain pump lead wire)
(• Drain sensor lead wire)
3 Control board exchange
4 Power supply transformer exchange
5 Arrest exchange
6 Intake air sensor exchange
7 Operation and check of the switches (listed below) which
are on the address board
• Rotary switches SW11, 12 · · · · Address setting
• Rotary switch SW14 · · · · · · · · · · Branch port setting
• Dip switch SW1· · · · · · · · · · · · · · Function change (main)
• Dip switch SW7 · · · · · · · · · · · · · Model code setting
8 Address board exchange
9 Power supply terminal block exchange
10 Transmission terminal block exchange
( ):Optional parts
17
Be careful on removing heavy parts.
PHOTOS
Fig.4
Fig.5
(C)