OMM-0153_E
• 5/11/2023 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 97 of 124
CENTURION Installation, Operation & Maintenance Manual
SECTION 9: O2 TRIM OPERATION
The Edge Controller displays following statuses in the
O
2
Trim Status
parameter on the
Advanced Setup
→
Performance
→
O
2
Trim
→
O
2
Trim Status
screen.
O
2
Trim Operation Interruption Errors
Status Messages
Description
Action
Idle
O2 Trim is not active
None-Normal Operation
O
2
Wait
O2 Trim is waiting for to initiate the
process
None-Normal Operation
Hunt
O2 Trim is looking for target
None-Normal Operation
WaitLock
O2 Trim found the target, waiting for
system to stabilize
None-Normal Operation
Locked
O2 Trim is ready to start the process
None-Normal Operation
Adjust
O2 trim is correcting the system
None-Normal Operation
Settle
System is settling after the correction
None-Normal Operation
Done
O2 Trim is successfully completed
None-Normal Operation
BV Hi Err
O
2
Trim operation exceeds blower
voltage limits
Check air filter, gas regulator,
combustion calibration
BV Lo Err
Check sensor calibration; it may need to
be replaced
Max Iter
O
2
Trim Operation reached maximum
iteration. Wait and try again
Check sensor calibration for inaccuracies
Increase gain or iteration attempts
Outlet Out of Rng
Outlet temp is outside of temperature
range
None-Normal Operation
FR Out of Rng
Fire Rate is not within track range
during trim operation
None
–
Steady State has not been
achieved
O
2
Trim in SP limit Unit is in setpoint limiting
None
–
System is near the high temp
limit.
