Watts AERCO Edge [ii], Operation Manual

Page: 192 / 196

Edge [ii] Controller Operation Manual
SECTION 10
– STARTUP, STATUS, FAULT MESSAGES
OMM-139_E
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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