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XiV. Troubleshooting (continued)
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
Soft Lockout Codes Displayed
Lockout number
Minimum time between starts has not been
1
reached. Normal delay used to avoid excessive
Anti Short Cycle
cycles.
Boiler Safety Limit wired to terminals J6-1, 2 or 3
OPEN:
2
•
Condensate Trap Float Switch
Boiler Safety Limit
contacts open.
Open
•
Air Pressure Switch contacts open.
•
Auto Reset High Limit contact open.
Boiler Safety Limit, or External Limit wired to termi-
nals J5-1 OPEN:
•
Jumper for External Limit wired to
3
terminals 11 and 12 or device connected
Boiler Safety Limit
to it open.
Open,
•
Jumper for Low Water Cutoff (LWCO)
(ILK Off)
Switch or device connected to it open.
•
Jumper for Low Gas Pressure Switch or
device connected to it open.
7
Shorted or open return temperature sensor.
Return sensor fault
8
Shorted or open supply temperature sensor.
Supply sensor fault
Shorted or open Domestic Hot Water (DHW)
9
DHW sensor fault
temperature sensor.
Shorted or open flue gas (stack) temperature
10
Stack sensor fault
sensor.
11
Flame failure after 5 tries to restart.
Ignition failure
13
Flame rod
Flame rod shorted to ground
shorted to ground
14
Temperature rise between supply and return is too
Delta T inlet/outlet
high.
high
Sage2.1 is reading a return sensor temperature
15
higher than the supply sensor temperature.
Return temp higher
Condition must be present for at least 75 seconds
than supply
for this error code to appear.
16
Supply water temperature has risen too quickly.
Supply temp has
risen too quickly
17
Normal waiting for fan speed to match purge and
Fan speed not
light-off setpoint.
proved
Condition
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.
•
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 ".
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 flue 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.
•
See possible causes for "Hard Lockout ".
•
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.
•
Shorted or mis-wired return sensor wiring.
•
Defective return sensor.
•
Shorted or mis-wired supply sensor wiring.
•
Defective supply sensor.
•
Shorted or mis-wired DHW sensor wiring.
•
Defective DHW sensor.
•
Shorted or mis-wired stack sensor wiring.
•
Defective stack sensor.
•
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.
•
Shorted or mis-wired flame rode wiring.
•
Defective flame rod.
•
Inadequate boiler water flow. Verify that pump is operating and that pump and
piping are sized per Section Vi of this manual.
•
Flow through boiler reversed. Verify correct piping and pump orientation.
•
No boiler water flow. Verify that system is purged of air and that appropriate valves
are open.
•
Sensor wiring reversed.
•
Supply or return sensor defective.
•
See possible causes for "Hard Lockout ".
•
Inadequate boiler water flow.
•
Verify that pump is operating and that pump and piping are sized per Section Vi of
this manual.
Possible Cause
nOTE
115
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