Weil-McLain ULTRA299-S4 Manual page 118

S 4
®
ERIES
Troubleshooting
Troubleshooting suggestions for Ultra boilers
The U-control is able to record information about the boiler's condition at the time of the three previous faults or errors. This
information is available to view in Contractor Menus under "DIAGNOSTICS" by selecting "ERRORS." The control will display
the following information:
U-Control Fault Displays, Diagnostics and Suggested Corrective Actions
Condition
Display
Control is not receiving 24V
Nothing shown
power
on display
screen and
blower running
at full speed
118
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GAS FIRED WATER BOILER
(continued)
U-Control Error Condition Log
Records the number of internal control faults
Displays the number of ignition attempts in the current
ignition sequence.
Records number of lockouts that required a manual reset
since this count was last cleared.
Records number of lockouts that have automatically reset
since this count was last cleared.
Details of present or last recorded lockout
Details of boiler during the second oldest lockout still in
memory
Details of boiler during the oldest lockout still in memory
:
1. Scroll down to "DIAGNOSTICS" and press the
enter key (Square Key in center)
2. Scroll down to "ERRORS" and press the enter key
(Square Key in center)
3. Scroll down to "LOCKOUT HISTORY #" and press
the enter key.
4. Scroll to choose the either "MANUAL RESET" or
"AUTO RESET" and press the enter key to display
Diagnostics
Check wiring for short circuit or
incorrect wiring.
Check 3-amp low voltage fuse
on U-Control shown on page
100.
Check transformer connection
to the U-control per wiring
diagram. Check for 24V output
of transformer.
— Boiler Manual
Select and press the enter key to reset this count
Select and press the enter key to reset this count
Select and press the enter key to reset this count
Select and press the enter key for more details
Select and press the enter key for more details
Select and press the enter key for more details
the fault condition that was recorded.
5. Press the left arrow key to return to the LOCKOUT
HISTORY # screen. Scroll up or down to highlight
other choices and press the enter key to view the
details of the boiler's condition when the lockout
was recorded.
6. TO CLEAR ALL LOCKOUT HISTORIES: While on the
"ERRORS" screen, hold the Left and Right arrow
buttons simultaneously for 5 seconds.
Corrective Action(s)
Correct wiring per wiring diagram including connection of transformer
to the U-Control.
Replace fuse with proper part found in replacement part section of this
manual. If fuse blows again recheck wiring per diagram.
Replace transformer if it is receiving 120VAC, but not outputting 24VAC.
Part number 550-100-400/0717