Troubleshooting
Si71-812
80
Troubleshooting
2.23
Power Transformer
Error Detection
Method
Check resistance and voltage with tester, and insulation resistance with megger.
Error Generating
Conditions
Possible Causes
Troubleshooting
Resistance of primary side of transformer: approx. 140
Ω
Resistance of secondary side of transformer: approx. 1.9
Ω
Voltage at secondary side of transformer when rated voltage is applied to primary side:
approx. 26 VAC
Insulation resistance between primary side of transformer and case: 100 M
Ω
or higher
Insulation resistance between secondary side of transformer and case: 100 M
Ω
or higher
Insulation resistance between primary side and secondary side of transformer: 100 M
Ω
or
higher
Check resistance of
primary side of
transformer.
Does
measured
resistance
deviate significantly
from values
shown
below?
YES
NO
Check resistance of
secondary side of
transformer.
Does
measured
resistance
deviate significantly
from values
shown
below?
YES
NO
Apply rated voltage to
primary side of
transformer, and check
output voltage of
secondary side
of transformer.
Does
measured
voltage deviate
significantly from
values shown
below?
YES
NO
Transformer is faulty.
Transformer is faulty.
Transformer is faulty.
Transformer is normal
(HF016)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(HL037)
Check resistance and voltage
Summary of Contents for VKM50GAV1
Page 9: ...Introduction Si71 812 viii...
Page 43: ...Operation Si71 812 34 Operation...
Page 53: ...Inspection and Maintenance of the Humidifier Si71 812 44 Maintenance...
Page 91: ...Troubleshooting Si71 812 82 Troubleshooting...
Page 99: ...Appendix Si71 812 90 Appendix 1 Appendix 1 1 Wiring Diagram VKM50GAMV1 VKM80GAMV1 VKM100GAMV1...
Page 100: ...Si71 812 Appendix Appendix 91 VKM50GAV1 VKM80GAV1 VKM100GAV1...
Page 103: ...Piping Diagram Si71 812 94 Appendix...
Page 105: ...Si71 812 ii Index...
