Watts AERCO Benchmark OMM-0136 - Page 137

Benchmark Platinum-Edge [II]: Operation-Service Manual
SECTION 9 – AERTRIM OPERATION
OMM-0137_E • GF-211 • 12/13/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 137 of 153
The Edge Controller does not display a message when O
2
levels are within the target range.
However, if O
2
levels fall outside the target range, one of the messages listed in Table 9-2 will be
displayed in the Auto Calibration Status parameter on the Main Menu → Advanced Setup →
Performance → AERtrim → AERtrim Status screen.
TABLE 9-2: AERtrim Operation Interruption Errors
Error Message
Cause
Possible Solutions
BV Hi Err
Trim operation exceeds
allowable blower voltage limits
Check air filter, gas regulator,
combustion calibration
BV Lo Err
Check sensor calibration; it may need
to be replaced
Max Iter
Trim Operation reached
maximum iteration. Wait and
try again
Check sensor calibration for
inaccuracies
Increase gain or iteration attempts
Tmp Rng Err
Outlet temp is outside of
temperature range
None-Normal Operation
FR Rng Err
Fire Rate is not within track
range during trim operation
None – Steady State has not been
achieved