Comp-Ipdu P.c. Board (Mcc-1595) Replacement Procedure - Carrier MMY-MAP0724FT9UL Service Manual

14-4. Comp-IPDU P.C. Board (MCC-1595) replacement procedure

Parts code Description
Inverter P.C. Board
4316V451
for compressor
This board is commonly installed in different models before shipment. Set the dip switch (SW800) setting of the
service board to the switch setting before replacement.
Replacement steps:
(1) Turn off the power supply of the outdoor unit and allow at least 1 minute for the capacitor to discharge.
Confirm that the light of the LED (D800) fades away.
(2) Remove all the connectors and 8 screws of the terminals (
the connectors by pulling the connector body. Do not pull the wire. Screws are to be re-used after
procedure).
(3) Remove all the 5 screws(
(These screws are to be re-used after procedure.)
(4) Remove the Compressor IPDU from the four spacers (
pliers.
Ex. MMY-MAP0724FT9UL
Compressor IPDU
(MCC-1595)
(5) Confirm that no dirt or damage is on the insulation sheet (flesh color) on the heat sink. As it can reduce the
heat transfer efficiency, and can cause a breakdown. If the insulation sheet comes off the heat sink, re-
apply the insulation sheet as shown in the following figure.
Applicable model
MMY-MAP0724FT9UL
MMY-MAP0964FT9UL
MMY-MAP1204FT9UL
2
) which secures the Compressor IPDU to the Heat sink.
Compressor IPDU
3
2
1
Red wire
1
Black Wire
D800
SW800
3
Remove the
PCB
Insulation sheet (flesh color)
Spread it on the heat sink
P.C. board type code
MCC-1595
1
) connected to the Compressor IPDU. (Remove
3
) by pinching the top of the spacers by round-nose
1
1
2
screw
∗
Reuse the insulation sheet.
Using a little heat transfer paste on the heat sink
will make easier to install, because the insulation
sheet will stick to the heat sink.
– 246 –
Product code
ASM-PCB(A3 IPDU)
Black Wire
3
1
White Wire
Pinch this part by
round-nose pliers for
2
Screw
removing the PCB.
1
1
1
Red wire
White Wire
Spacer
(4 are in packed in this
service assembly)
3