Indoor Controller Board - Mitsubishi Electric TRANE NTXAMT12A112AA Service Manual

12.5.2. Indoor controller board

CN105 CN22
CN25
CNER
CN41
CN32
SWE
SW1
SW2
CN3C
CN4Y
Specifications are subject to change without notice.
NTXAMT12, 18, 24, 30, 36A112AA
CNXA2
CNXC2
CNXB2
CN51
CN24-2
CN2C
CN24-1
CN20
CN4F
CN44
CNF
CN90
52
SWE Emergency operation
SW1 Model selection
SW2 Capacity setting
CN105 Radio frequency interface
CN32 Remote start/stop adapter
CN22 For MA remote controller cable con-
nection
(10 - 13 VDC)
CN51 Centralized control
CN41 JAMA standard HA terminal A
CN44 Thermistor
(liquid/condenser/evaporator
temperature)
CN4F Float sensor
CN20 Thermistor (Inlet temperature)
CN24-1
1st Heater control (12VDC)
CN24-2
2nd Heater control
CN4Y For fan control
CN3C Indoor-outdoor transmission
(0 - 24VDC)
CN90 Wireless remote controller
CNXA2
Connect to the indoor controller board
CNXB2
Connect to the indoor controller board
CNXC2
Connect to the indoor controller board
CNXA1
Connect to the indoor power board
CNXB1
Connect to the indoor power board
CNXC1
Connect to the indoor power board
CNER
ERV controll
CN2C
ERV input
CN25
Humidity conrol
CNF
Humidity input
© 2022 Mitsubishi Electric Trane HVAC US LLC. All rights reserved.