Control Box - Mitsubishi Electric CITY MULTI PEFY Series Technical & Service Manual

DISASSEMBLY PROCEDURE-Control box

8-2. Control box

Procedures
1. Removing the control cover (Figure 2-1)
(1) Remove the two control box cover mounting screws.
(2) Remove the two terminal block cover mounting screws.
* The above procedures will allow for the following services to be
performed.
1 Operation and checking of the following switches on the
address board of the control board
Rotary switch SW11,12
Rotary switch SW14
Dip switch SW1
Dip switch SW2
Dip switch SW3
Dip switch SW4
Dip switch SW7
Jumper pin SWE
Dip switch SWA,SWC
2 Checking of the wiring connections to the control box
(see below) and the field-installed wiring
Power wire
Indoor-outdoor transmission line (Field-connected)
Remote controller wiring
LEV wiring
Drain pump wiring
Drain sensor wiring
Fan motor wiring
Indoor temperature thermistor
wiring
Liquid pipe temperature
thermistor wiring
Gas pipe temperature thermistor
wiring
3 Replacement of control board
4 Replacement of address board
5 Replacement of DSA board
6 Replacement of capacitor
7 Replacement of power supply transformer
8 Replacement of fuse
HWE1212A
Address setting
Port setting
Function setting 1
Capacity setting
Figure 2-1
Function setting 2
Function setting
Function setting
Test run
Option setting
(Field-connected)
(Field-connected)
(Factory-connected)
(Factory-connected)
Figure 2-2
(Factory-connected)
(Factory-connected)
(Factory-connected)
(Factory-connected)
(Factory-connected)
18
Explanatory figure
Control box cover
Terminal block cover
Control box