Mitsubishi Electric MUZ-FD25VABH - E1 Service Manual page 49

Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy
11-6. TEST POINT DIAGRAM AND VOLTAGE
1. Inverter P.C. board
MUZ-FD25VABH MUZ-FD35VABH
Back side of unit
AC 230 V
Fuse (F901)
250 V 3.15 A
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
-20 -10 0 10 20
Temperature(°C)
Smoothing
capacitor
DB61
(C63)
DC 260 - 300 V
(-) (+)
Discharge temperature thermistor(RT62)
700
600
500
400
300
200
100
0
0 10 20 30 40 50
30 40
Temperature(°C)
www.ilmalämpöpumput.com
Smoothing
Smoothing
capacitor capacitor
(C62)
(C61)
Fuse (F801)
250 V 3.15 A
LEV
connector
(CN724)
Fin temperature thermistor(RT64)
200
180
160
140
120
100
80
60
40
20
0
60 70 80 90 100 110 120
0
49
Heater
Fuse (F701)
connector
250 V 3.15 A
(CN722)
R.V.coil
(CN721)
230 VAC
AC 230 V
Jumper wire
Jumper wire for
for pre-heat
changing defrost
control setting
setting (JS)
(JK)
10 20 30 40 50 60 70 80
Temperature(°C)