Voltage Test Points On The Control Board - Trane Mitsubishi Electric TPEFYP006MA143A Technical And Service Manual

[ VIII Troubleshooting ]

4. Voltage test points on the control board

1. TPEFYP006, 008, 012, 015, 018, 024, 027, 030, 036, 048, 054MA143A
CN2M
CN3A
CN24
SW2
SW4
CND
CNP
HWE1832A
CN32
SW3
Indoor controller board
F01
PC51(*1) C53(*1)
Power supply board
- 28 -
F01 Fuse(AC 250V 6.3A)
CND Power supply voltage (220 -
240VAC)
CN2M For M-NET transmission cable
connection (24 - 30VDC)
SWE Emergency operation
SW2 Capacity setting
CN41
SW4 Function setting
CN51
SW3 Function setting
CN52
CN32 Remote start/stop adapter
CN20
CN3A For MA remote controller cable
connection
(10 - 13 VDC (Between 1 and 3.))
CN4F
CN44
CN52 Remote display
CN22
CN51 Centralized control
SWE
CN41 JAMA standard HA terminal A
CN44 Thermistor (liquid/gas tempera-
ture)
CN4F Float switch
CN22 For fan control
CN24 For heater control
CN20 Thermistor (Inlet temperature)
CNMF Fan motor output
1 - 4: 294 - 340 VDC
5 - 4: 15 VDC
6 - 4: 0 - 6.5 VDC
7 - 4: Stop 0 or 15 VDC
Run 7.5 VDC
(0 - 15 pulse)
CNP Drain-up mechanism output
(200VAC)
(*1)
V Voltage on the (-) side of PC51
FG
and C25
(Same with the voltage between 7
(+) and 4 (-) of CNMF)
V Voltage between the C25 pins
CC
15 VDC
(Same with the voltage between 5
(+) and 4 (-) of CNMF)
Vsp Voltage between the C53 pins
0VDC (with the fan stopped)
1 - 6.5VDC (with the fan in opera-
C25(*1) tion)
(Same with the voltage between 6
CNMF
(+) and 4 (-) of CNMF)
GB