115
XIV. Troubleshooting (continued)
Soft Lockout Codes Displayed
B. Troubleshooting problems where a Soft Lockout
Code is displayed. When a soft lockout occurs, the
boiler will shut down, the display will turn red and
Lockout Number Condition Possible Cause
1
Anti Short Cycle
Minimum time between starts has not been
reached. Normal delay used to avoid excessive
cycles.
2
Boiler Safety Limit
Open
Boiler Safety Limit wired to terminals J6-1, 2 or 3
OPEN:
• Condensate Trap Float Switch
contacts open.
• Air Pressure Switch contacts open.
• Auto Reset High Limit contact open.
• Loose wiring to limit device.
• Auto Reset Supply high limit sensor detected temperatures in excess of 200°F.
• Defective Auto Reset Supply High Limit Switch.
• Plugged Condensate Trap - also check to ensure boiler is level.
• Air Pressure Switch contacts open - check for blocked vent.
• See possible causes for “Hard Lockout 4
”.
NOTE
Block Vent Special Note
Before a call for heat the air pressure switch is closed. When there is a call for heat
with a blocked vent the air pressure switch will open (due to excessive pressure of
the fan against a blocked ue pipe) after the fan starts. The control stops the start
sequence and stops the fan. After the fan stops the pressure switch re-closes and the
cycle continues. The displays shows the cause of trip for only the time the pressure
switch is open.
3
Boiler Safety Limit
Open,
(ILK Off)
Boiler Safety Limit, or External Limit wired to termi-
nals J5-1 OPEN:
• Jumper for External Limit wired to
terminals 11 and 12 or device connected
to it open.
• Jumper for Low Water Cutoff (LWCO)
Switch or device connected to it open.
• Jumper for Low Gas Pressure Switch or
device connected to it open.
•
See possible causes for “Hard Lockout
4”.
• Loose wiring to limit device.
•
External Limit defective or jumper not installed.
• Low Gas Pressure Switch contacts open (if installed).
• LWCO switch not installed and jumper missing.
• If yellow light on LWCO is on, system is low on water.
• If neither yellow or green light is on, check LWCO harness.
7
Return sensor fault
Shorted or open return temperature sensor.
• Shorted or mis-wired return sensor wiring.
•
Defective return sensor.
8
Supply sensor fault
Shorted or open supply temperature sensor.
• Shorted or mis-wired supply sensor wiring.
•
Defective supply sensor.
9
DHW sensor fault
Shorted or open Domestic Hot Water (DHW)
temperature sensor.
• Shorted or mis-wired DHW sensor wiring.
•
Defective DHW sensor.
10
Stack sensor fault
Shorted or open ue gas (stack) temperature
sensor.
• Shorted or mis-wired stack sensor wiring.
•
Defective stack sensor.
11
Ignition failure
Flame failure after 5 tries to restart.
• No gas pressure.
•
Gas pressure under minimum value shown on rating plate.
• Gas line not completely purged of air.
• Defective Electrode.
• Loose burner ground connection.
• Defective Ignition Cable.
• Defective gas valve (check for 24 Vac at harness during trial for ignition before
replacing valve).
• Air-fuel mixture out of adjustment - consult factory
.
13
Flame rod
shorted to ground
Flame rod shorted to ground
• Shorted or mis-wired ame rode wiring.
•
Defective ame rod.
14
Delta T inlet/outlet
high
Temperature rise between supply and return is too
high.
• Inadequate boiler water ow
. Verify that pump is operating and that pump and
piping are sized per Section VI of this manual.
15
Return temp higher
than supply
Sage2.1 is reading a return sensor temperature
higher than the supply sensor temperature.
Condition must be present for at least 75 seconds
for this error code to appear.
• Flow through boiler reversed. V
erify correct piping and pump orientation.
• No boiler water ow. Verify that system is purged of air and that appropriate valves
are open.
• Sensor wiring reversed.
• Supply or return sensor defective.
16
Supply temp has
risen too quickly
Supply water temperature has risen too quickly.
• See possible causes for “Hard Lockout
4”.
• Inadequate boiler water ow.
• Verify that pump is operating and that pump and piping are sized per Section VI of
this manual.
17
Fan speed not
proved
Normal waiting for fan speed to match purge and
light-off setpoint.
the “Help” button will “blink”. Select the “blinking”
“Help” button to determine the cause of the soft
lockout. The boiler will automatically restart once the
condition that caused the lockout is corrected.
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