Watts AERCO Edge [ii] - Page 188

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 188 of 196
TABLE 10-1: Edge Controller Fault Messages
#
FAULT MESSAGE
DESCRIPTION
TYPE
12
Interlock Open
The Remote Interlock is open.
Fault, Manual
Reset
13
Delayed Interlock Open
The Delayed Interlock is open.
Fault, Manual
Reset
14
Airflow Fault During Purge
The Blower Proof switch opened during purge, or
air inlet is blocked.
Fault, Manual
Reset
15
SSOV Fault During Purge
The SSOV switch opened dug purge.
Fault, Manual
Reset
16
Prg Switch Open During Purge
The Purge Position Limit switch on the Air/Fuel
Valve was open during purge.
Fault, Manual
Reset
17
Ign Switch Open During Ignition
The Ignition Position Limit switch on the Air/Fuel
Valve opened during ignition.
Fault, Manual
Reset
18
Airflow Fault During Ign
The Blower Proof switch opened during ignition.
Fault
19
Airflow Fault During Run
The Blower Proof switch opened during run.
Fault, Manual
Reset
20
SSOV Fault During Ignition
The SSOV switch closed or failed to open during
ignition.
Fault, Manual
Reset
21
SSOV Fault During Run
The SSOV switch closed for more than 15
seconds during run.
Fault, Manual
Reset
22
Flame Loss During Ignition
The Flame signal was not seen during ignition or
lost within 5 seconds after ignition.
Fault, Manual
Reset
23
Flame Loss During Run
The Flame signal was lost during run.
Fault, Manual
Reset
24
High Exhaust Temp Switch
The High Exhaust Temp switch is open.
Fault, Manual
Reset
25
Loss of Power
The unit shut down due to loss of power
Fault
26
Loss of Sensor
Not used
Not used
27
Loss of Signal
Not used
Not used
28
High O2 Level
The O
2
Sensor reading is above acceptable
level.
Fault
29
Low O2 Level
The O
2
Sensor reading is below acceptable level.
Fault
30
High CO Level
Not used
Not used
31
SSOV Relay Failure
A failure has been detected in one of the relays
that control the SSOV.
Fault, Manual
Reset
32
Residual Flame
The Flame signal was seen for more than 60
seconds during standby.
Fault, Manual
Reset
33
Heat Demand Failure
The unit failed to fulfill the demand for heat.
Fault, Manual
Reset
34
Ign Switch Closed During Purge
The Ignition Position Limit switch on the Air/Fuel
Valve closed during purge.
Fault, Manual
Reset
35
Prg Switch Closed During Ign
The Purge Position Limit switch on the Air/Fuel
Valve was stuck closed during ignition.
Fault, Manual
Reset
36
SSOV Switch Open
The SSOV switch opened during standby.
Fault, Manual
Reset
37
Ign Board Comm Fault
A communication fault has occurred between the
PMC board and Ignition board.
Fault
38
Wait
The unit is waiting for a process to run to
completion.
Message
39
Direct Drive Signal Fault
The direct drive signal is not present or is out of
range.
Fault