Test Point Diagram And Voltage; Back Side Of Unit; Front Side Of Unit - Mitsubishi Electric MUZ-GL09NA-U1 Service Manual

10-6. TEST POINT DIAGRAM AND VOLTAGE

1. Inverter P.C. board
MUZ-GL09/12/15NA
MUZ-GL09/12/15NAH
MUY-GL09/12/15NA

Back side of unit

208/230 VAC
Fuse (F901)
T3.15AL250V
Output to
drive outdoor
fan motor
(CN932)
Output to
drive
compressor
(LDU,
LDV,
LDW)

Front side of unit

Defrost thermistor(RT61)
Ambient temperature thermistor(RT65)
Outdoor heat exchanger temperature thermistor(RT68)
100
90
80
70
60
50
40
30
20
10
0
-4 14 32
Temperature(°F)
OBH733D
Smoothing
capacitor (C63)
DB61
260 - 370 VDC
(-) (+)
LED
Discharge temperature thermistor (RT62)
800
700
600
500
400
300
200
100
0
32 50 68 86 104 122 140 158 176 194 212 230 248
50 68 86 104
Smoothing
Smoothing
capacitor (C62) capacitor (C61)
Fuse (F801)
T3.15AL250V
Temperature (°F)
61
R.V.coil
Heater connector
(CN721)
(CN722)
(MUZ)
(MUZ-GL09/
208/230 VAC
12/15NAH)
Jumper wire for pre-
heat control setting
(JK)
Jumper wire for
changing defrost
setting (JS)
Fin temperature thermistor(RT64)
200
180
160
140
120
100
80
60
40
20
0
32 50 68 86 104 122 140 158 176
Temperature(°F)
Fuse (F701)
T3.15AL250V
208/230 VAC