Service and Parts Manual (2018, 2019, 2020, 2021, 2022)

52 PB
UNIT DISASSEMBLY AND COMPONENT REPLACEMENT
Remove IPM PCB (Inverter Board)
1. Remove front panel (Figure 501).
2. Remove User Interface (Figures 502 thru 504).
3. Open electrical Control Box (Figure 505).
4. Disconnect CN 13 from the Power PCB.
5. Remove Chassis from Wall (Figure 501).
6. Remove shroud support (2 screws) (Fig 512).
7. Remove IPM PCB Cover (3 screws) (Fig 512).
NOTE: It is a good practice to take pictures of the
wiring connections to facilitate reinsallation.
8. Disconnect all wires. (Fig 513)
8) Remove 4 mounting screws (Figure 513).
Figure 512 (Remove IPM PCB)
Figure 513 (Remove IPM PCB)
CAUTION
IPM PCB is attached to a heavy heat sink with
thermal paste or a thermal mat which is
required to dissipate heat from the IPM PCB.
Use care when removing.
PCB needs to drop down through housing.
It can fall and be damaged if care is not taken.
4 Places
U
V
W