Test Point Diagram; Power Supply Board - Mitsubishi Electric TRANE NTXAMT12A112AA Service Manual

12.5. Test point diagram

12.5.1. Power supply board

CNXB1 CNXC1 CNXA1
Specifications are subject to change without notice.
NTXAMT12, 18, 24, 30, 36A112AA
CND
C53
(*1)
PC51 C25
(*1) (*1)
51
CND Power supply voltage (208 - 230VAC)
CNXA1
Connect to the indoor controller board
CNXB1
Connect to the indoor controller board
CNXC1
Connect to the indoor controller board
CNXA2
Connect to the indoor power board
CNXB2
Connect to the indoor power board
CNXC2
Connect to the indoor power board
(*1)
V Voltage on the (-) side of PC51 and
FG
C25
(Same with the voltage between 7 (+)
and 4 (-) of CNMF)
V Voltage between the C25 pins 15
CC
VDC
(Same with the voltage between 5 (+)
and 4 (-) of CNMF)
V Voltage between the C53 pins
sp
0VDC (with the fan stopped)
1 - 6.5VDC (with the fan in operation)
(Same with the voltage between 6 (+)
and 4 (-) of CNMF)
© 2022 Mitsubishi Electric Trane HVAC US LLC. All rights reserved.