Watts AERCO Edge [ii] - BST CASCADE MESSAGES

Edge [ii] Controller Operation Manual
SECTION 10 – STARTUP, STATUS, FAULT MESSAGES
OMM-139_E • 8/25/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 192 of 196
TABLE 10-2: Edge Controller O2 Trim Messages
FAULT MESSAGE
Type
MESSAGE DESCRIPTION
Wait Sensor Warm-up
Status
O2 Auto Cal Done
Status
O2 Level Out Of Range
Warning
Sensor auto calibration offset required is more
than ±3%
O2 Warning Service Required
Warning
Appears if the O
2
level is outside of its limits for
more than 5 minutes.
OnAER Communication failed
Warning
O2 Percentage Low
Warning
The O2 % has gone below 2% for more than 30
seconds
O2 Sensor Malfunction
Warning
Occurs if O
2
Levels are less than -4% or more
than 24% for more than 10 seconds.
Warning 02 Level High
Warning
O
2
Levels > 9% and < 24% for more than 30
seconds {auto-reset when value comes back in
range}
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
Type
All Boilers Off
Status
All On > 90% Fire Rate
Warning
All On-Raise Fire Rate
Status
Auto Cycling On
Status
Boiler Ignited
Status
BST Client Com Fault
Warning
BST FAILSAFE
Warning
BST in Control
Status
BST in Deadband
Status
BST Overtemp
Fault
Failsafe Active
Status
Igniting First
Status
Igniting Next Boiler
Status
Lower Fire Rate
Status
On Temperature
Status
One Boiler Mode
Status
Raise Fire Rate
Status
Remote Sig Fault
Fault