KMC Controls FlexStat Operation Guide - Manual (Page 36)

FlexStat 36 Operation Guide, Rev. R
Output, Fan, and Relay Issues
Analog Output Does Not Work
CAUTION
Do not mistakenly connect 24 VAC to an analog
output ground. This is not the same as a relay’s
switched common. See the backplate’s terminal
label for the correct terminal.
NOTE: The maximum current of an analog output
is 20 mA @ 12 VDC. Excessive loads will
be clamped at the maximum. Relays may
chatter or fail to latch if they need more
current than the maximum allowed. KMC
REE-3111/3112 relays, for example, could be
connected to the analog outputs, but REE-
3211/3221/3213 relays would not operate
reliably with analog outputs because their
required power exceeds the FlexStat’s
capacity. (REE-3211/3221/3213 relays could,
however, be used with the FlexStat relays
and a separate power source.)
• Check current draw of load—it must be 20 mA or
less. Substitute an output device that draws less
current.
• Check that the output is on.
• See
Wiring Issues on page 39 .
• See also Fan Does Not Run on page 36 .
• If Restore Factory has just been performed, see
the Note and Cautions in Restore Factory on
page 27 .
• If the firmware has just been upgraded, firm-
ware for the wrong model type may have been
installed (e.g., BAC-1xx63 firmware accidentally
installed in a model BAC-1xx36). In the About
menu, ASV may simply read “CUSTOM” instead
of something like “BAC_1xx36 R1.1.0.5” as it
normally would have done. If so, repeat the firm-
ware upgrade and ensure that the correct type of
firmware is selected for the connected model.
NOTE: ASV in the About menu will also show
CUSTOM if any built-in Control Basic
program (1–5) is not running or has auto-
run disabled.
Fan Does Not Run
NOTE: The animated fan icon is coupled with
BV18 in the packaged programming (not
the actual fan output terminal).
• Select Occupied mode from the Home Menu—
see H/C, Fan, Occupancy, and Override on page 4 .
• Override the fan to On from the Home Menu—
see H/C, Fan, Occupancy, and Override on page 4 .
• See Wiring Issues on page 39 .
• Check that the appropriate application is select-
ed—see (Advanced) Application and Additional
Setup on page 7 .
• Check the fan configuration—see Fan Setup on
page 8 .
• Restart the FlexStat. After a low limit alarm is
generated, the fan will not run until after the
FlexStat is restarted. (See Resetting the FlexStat
on page 26 .)
Relay (External) Does Not Work
• See Analog Output Does Not Work on page 36 .
• See Relay (Internal) Does Not Work on page 37