Bst Cascade Messages - Watts AERCO Edge [ii] Operation Manual

Edge [ii] Controller Operation Manual
SECTION 10 – STARTUP, STATUS, FAULT MESSAGES
TABLE 10-2: Edge Controller O2 Trim Messages
FAULT MESSAGE
Wait Sensor Warm-up
O2 Auto Cal Done
O2 Level Out Of Range
O2 Warning Service Required
OnAER Communication failed
O2 Percentage Low
O2 Sensor Malfunction
Warning 02 Level High

10.3 BST CASCADE MESSAGES

The Edge Controller displays the following messages related to Boiler Sequencing Technology
(BST):
TABLE 10-3: Edge Controller BST Cascade Messages
MESSAGE
All Boilers Off
All On > 90% Fire Rate
All On-Raise Fire Rate
Auto Cycling On
Boiler Ignited
BST Client Com Fault
BST FAILSAFE
BST in Control
BST in Deadband
BST Overtemp
Failsafe Active
Igniting First
Igniting Next Boiler
Lower Fire Rate
On Temperature
One Boiler Mode
Raise Fire Rate
Remote Sig Fault
•
OMM-139_E 8/25/2020
Type
Status
Status
Sensor auto calibration offset required is more
Warning
than ±3%
Appears if the O
Warning
more than 5 minutes.
Warning
The O2 % has gone below 2% for more than 30
Warning
seconds
Occurs if O
Warning
than 24% for more than 10 seconds.
O
2
Warning seconds {auto-reset when value comes back in
range}
Type
Status
Warning
Status
Status
Status
Warning
Warning
Status
Status
Fault
Status
Status
Status
Status
Status
Status
Status
Fault
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
MESSAGE DESCRIPTION
level is outside of its limits for
2
Levels are less than -4% or more
2
Levels > 9% and < 24% for more than 30
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