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107750-01 - 9/17
Soft Lockout Codes Displayed
F. 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 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.
XIV. Troubleshooting
(continued)
Lockout
Number
Condition
Possible Cause
2
Boiler Safety Limit
Open
Boiler Safety Limit wired to terminals J6-1 or
3 OPEN:
• External Limit.
• Optional LWCO
•
Condensate Float Switch
External Limit:
• Water temperature is higher than External Limit setting. See “Hard
Lockout 4” for additional information.
• External device not used and jumper not installed.
• External Limit device is defective.
• Loose wiring to limit device
Optional Low Water Cut Off (LWCO)
• If yellow light on LWCO is on, system is low on water. Ensure air vent
is unobstructed and properly functioning as a blocked air vent can result
in low water indication.
• If neither yellow or green light on LWCO is on, check LWCO harness.
Condensate Float Switch
•
Float Switch not installed
• Condensate trap is blocked
• Float Switch is defective
• Loose wiring to float switch
3
Boiler Safety Limit
Open
Blocked Vent Switch wired to terminals J5-1
OPEN
• Blocked Vent Switch contact open - check for blocked flue/air intake.
NOTE
Blocked Vent Switch 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 blower against a blocked flue pipe) after the blower starts. The
control stops the start sequence and stops the blower. After the blower 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.
7
Return sensor
(10 KOhms) fault
Shorted or open return temperature sensor.
• Shorted or mis-wired return sensor wiring.
• Defective return sensor.
8
Supply sensor
(10 KOhms) fault
Shorted or open supply temperature sensor.
• Shorted or mis-wired supply sensor wiring.
• Defective supply sensor.
10
Stack sensor
(10 KOhms) fault
Shorted or open flue gas (stack) temperature
sensor.
• Shorted or mis-wired flue temperature sensor wiring.
• Defective flue temperature sensor.
11
Ignition failure
Flame failure after 5 tries to restart. Flame
rod not detecting flame.
• 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.
• Defective or fouled electrode.
•
Blocked Vent
Содержание ASPEN ASPN-320
Страница 11: ...11 107750 01 9 17 IV Locating the Boiler continued Figure 4 1 Minimum Clearances To Combustible Construction ...
Страница 13: ...13 107750 01 9 17 Figure 5 1 Wall Layout Mounting Hole Location V Mounting The Boiler continued ...
Страница 88: ...88 107750 01 9 17 Figure 10 4 Proper Installation of Header Sensor X Wiring continued ...
Страница 89: ...89 107750 01 9 17 Figure 10 5 Internal Wiring Ladder Diagram X Wiring continued ...
Страница 90: ...90 107750 01 9 17 X Wiring continued CONDENSATE FLOAT SWITCH ...
Страница 91: ...91 107750 01 9 17 X Wiring continued Figure 10 6 Internal Wiring Connections Diagram ...
Страница 100: ...100 107750 01 9 17 Operating Instructions XI Start Up and Checkout continued ...
Страница 145: ...145 107750 01 9 17 XV Service Parts continued ...
Страница 147: ...147 107750 01 9 17 XV Service Parts continued All Models ...
Страница 149: ...149 107750 01 9 17 XV Service Parts continued All Models ...
Страница 151: ...151 107750 01 9 17 XV Service Parts continued All models ...
Страница 157: ...157 107750 01 9 17 ...
Страница 158: ...158 107750 01 9 17 ...
Страница 159: ...159 107750 01 9 17 ...
Страница 160: ...160 107750 01 9 17 U S Boiler Company Inc P O Box 3020 Lancaster PA 17604 1 888 432 8887 www usboiler net ...