Danfoss Turbocor TTS Series Service Manual page 272

Figure B-21 Compressor Operation Troubleshooting Flowchart (Sheet 2)
B
No
Is DC Bus voltage is
within spec
Yes
No
Refer to Section
4.14.2 "Soft Start
Verification"
Refer to Section
4.23.2 "DC‐DC
Verification"
Refer to Section 4.5
Troubleshooting"
272 of 282
M-SV-001-EN Rev. G
C
Yes
Are I/O cable and
BMCC board securely
connected?
Yes
No
Disconnect power,
secure
component(s)
A
Refer to Section
4.26.2 "BMCC
Verification"
"Voltage
D E F
No
No
Yes
Is
there a demand %
displayed?
No
Restore demand
input to the
compressor
Close interlock
A
circuit
Wait until IGV reset
A
No
Refer to Section
5.5.4
"Troubleshooting
the Inverter"
End
G
Yes
Yes
Yes
fault be reset by
cycling the power?
Refer to Section 5.0
"Troubleshooting"
End
Note the IGV settings
Has
the IGV reset?
Yes
No
Is Inverter Temp
below Maximum Start
Temp?
Yes
Have all Start Delay
Timers have expired?
Yes
A
H
No
Can
No
No
Wait until all Start
Delay Timers have
expired