Mitsubishi Electric PEFY Series Technical & Service Manual page 18

2. Removing the control box (Figure 2-2)
(1) Disconnect the wiring from the control board and the relay
connectors.
LEV1 wiring
Fan motor wiring
Indoor temperature thermistor
wiring
Liquid pipe temperature thermistor
wiring
Gas pipe temperature thermistor
wiring
Drain pump wiring
Drain sensor wiring
(2) Remove the two control box mounting screws.
HWE12120
Explanatory figure
18