Trane Technologies 4TTV8060A1000B - Page 42

42
4T-V8-SF-1M-EN
Breaker Trip Procedure
Trip?
No
Yes
Trip?
Yes
Immediate trip as
soon as breaker is
closed?
Trip?
Yes
No
No
T rip?
No
Drive Test:
Passed?
No
No
Yes
Disconnect OD fan
and close breaker
Connect Fan
Run Drive
Diagnostic Test
Reconnect drive
without fan
Fan Motor or
Connection Failure
Weak Breaker or
Drive F ault
Replace Breaker
Disconnect AC
Input from drive
and close breaker
Yes
Trip?
Trip?
No
Yes
· Verify wiring
· Verify sensor readings
·Checkbreaker
·Checkbreakersize
· Check for GFCI on circuit
· Replace breaker if necessary
Breaker Trip Procedure
Weak Breaker
or Drive F ault
(99% chance
Drive)
Yes No
Run System at
100%
Run OD Fan Test*
Trip?
No
Fan Motor or
Connections or
Breaker
Yes
· Verify wiring
· Check breaker
· Check breaker size
· Replace breaker if necessary
Investigate system issue or
weak breaker
Test Response 6:
No F ault Found
Go to Drive
Diagnostic Test
Flow Chart
Scan to see a
video on the
Break Tip
Procedure
+VDC -VDC
ELECTRICAL HAZARD
Failure to follow this
warning could result in
personal injury or death.
WAIT TWO (2) MINUTES
after disconnecting power
prior to touching electrical
components as they may
hold a dangerous charge
of 400VDC, then verify DC
Voltage is less than 42 VDC
at inverter test points
labeled +VDC and -VDC
before servicing board.
400 VOLTS
WARNING