– 68 –
TROUBLE SHOOTING
PRECAUTIONS FOR CHECKING
RAC-
18YH5
WARNING
WARNING
Always keep your hands
and metallic things away
from the cabinet.
DANGER!
Don't install
the ground
line.
When using an
oscilloscope, never
ground it.
Don't forget that high
voltage as noted in
the figure above may
apply to the
oscilloscope.
Remember that
voltage of 175 V is
applied to the 0V line
on the P.W.B. or the
like as shown in the
right diagram.
Indoor Controller
Outdoor Controller
Power Switch
Point
400 F
I.P
.M
Compressor
motor
Point
line
Control
P.W.B.
Main
P.W.B.
Voltage at point A
Ground voltage
Grounding
350V
Point B (0V line)
Power
inlet
Summary of Contents for Summit RAC-18YH5
Page 6: ...SPECIFICATIONS 0 4 ...
Page 17: ... 01 2 34 5 6 2 7 6 7 8 3 9 15 ...
Page 18: ... φ 0 φ φ 0 1 1 1 2 33 16 ...
Page 20: ... 0 0 1 203 1 202 4 5 5 6 6 728 5 9 7 8 2 7 4 18 ...
Page 21: ... 19 ...
Page 24: ...RAC 18YH5 MODEL A X 8 T 1 1 SELF CHECK SELF MODE SERVICE SW RED RED RED 23 ...
Page 25: ... 25 0 0 0 1 1 1 1 2 0 1 3 44 5 1 1 6 7 4 887 8972 ...
Page 26: ... 27 ...
Page 27: ... 28 Mode data file RAS 18YH5 VALUE LABEL NAME ...
Page 28: ... 29 0 1 1 2 334 5 22 1 6 0 7 0 7 6 8 1 9 0 1 1 66 66 5 0 7 22 22 1 1 ...
Page 31: ... 35 0 1 ...
Page 32: ... 36 ...
Page 33: ... 0 1 2 3 4 1 2 0 1 2 3 4 1 2 5 6 6 5 6 6 7 4 4 37 ...
Page 34: ... 2 Receiver Circuit 3 Buzzer Circuit 01 23 4 5 5 6 6 6 78 9 4 9 5 4 9 8 2 38 ...
Page 36: ...5 Initial Setting Circuit IC401 6 Power Supply 0 1 2 2 3 4 2 5 6 4 7 8 6 9 8 6 40 ...
Page 37: ... 7 Fan Motor Drive Circuit 0 0 1 2 3 3 0 45 67 8 7 45 3 0 9 0 2 2 1 52 152 2 2 41 ...
Page 38: ... 0 1 2 3 4 1 2 3 3 3 0 3 5 6 1 7 7 5 8 0 42 ...
Page 40: ... 0 1 0 2 3 3 2 3 3 2 3 3 2 44 ...
Page 43: ... 1 8 0 9 1 8 0 9 47 ...
Page 45: ... 0 49 ...
Page 48: ... 0 12 3 4 0 12 5 5 4 6 7 3 8 9 3 9 9 9 4 4 4 52 ...
Page 49: ... 0 1 2 3 4 5 45 5 4 5 45 5 5 4 45 45 5 5 53 ...
Page 50: ...5 Power Circuit for P W B 54 ...
Page 54: ... 0 1 2 23 23 4 5 6 7 8 6 6 9 0 6 1 3 1 6 0 1 6 6 0 9 58 ...
Page 57: ... 0 0 0 1 8 Reversing valve control circuit 2 334 5 4 6 5 7 8 0 3 0 8 0 8 0 61 ...
Page 67: ... 71 0 0 1 2 31 0 4 5 0 6 1 6 6 0 1 5 0 1 6 0 0 6 0 ...
Page 68: ... 72 0 1 2 THE SUPPORT FUNCTION OF FAILURE DIAGNOSIS ...
Page 69: ... 73 0 1 2 3 4 5 6 3 3 7 8 6 9 3 8 6 9 3 6 8 698 6 6 60 9 6 8 ...
Page 70: ... 74 ...
Page 77: ... 81 ...
Page 80: ... 84 0 1 0 1 2 0 3 4 1 3 0 3 1 5 5 5 5 5 5 5 5 ...
Page 82: ... 86 0 1 0 2 3 2 3 4 4 4 4 4 ...
Page 83: ... 87 ...
Page 84: ... 88 0 10 2 3 3 4 1 2 2 5 2 6 7 7 7 7 7 7 7 3 3 3 3 3 3 3 ...
Page 85: ... 89 0 12 3 3 3 ...
Page 86: ... 90 0 12 1 3 4 5 4 5 4 5 4 65 65 7 6 8 9 2 8 5 ...
Page 88: ... 92 IPM Intelligent Power Module DIAGNOSIS ...
Page 91: ... 95 4 Tangential air flow fan and fan motor 1 Electrical parts 0 1 211 3 0124 5 6 78 ...
Page 92: ... 96 ...
Page 93: ... 97 ...
Page 94: ... 98 ...
Page 95: ... 99 ...
Page 96: ...Printed in Japan TSK AW NO 0010E RAS 18YH5 RAC 18YH5 F ...