Control Box Of The Heat Source Unit - Mitsubishi Electric PQHY-P72TYHMU-A Service Handbook

[ III Heat source Unit Components ]

[2] Control Box of the Heat source Unit

(1) PQHY-P72, 96, 120THMU-A, PQRY-P72, 96, 120THMU-A
DC reactor
(DCL)
Inrush current resistor
Note2
Noise filter
Note1
Power supply terminal block
(TB1)
1) Exercise caution not to damage the bottom and the front panel of the control box. Damage to these parts affect the waterproof
and dust proof properties of the control box and may result in damage to its internal components.
2) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter-
minals to remove them.
HWE09080
Electromagnetic relay
(72C)
Note2
Ground terminal
Smoothing capacitor
(C1)
- 78 -
Relay board
M-NET board
INV board
Pump interlock terminal block
(TB8)
Control board
Terminal block for
transmission line
(TB3,TB7)
GB