Weil-McLain Ultra 3 series User Manual page 101

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gas fired water boiler
Troubleshooting
Make sure to determine the causes of outages. Do not leave the boiler operating without a complete diagnosis.
U-Control fault indications
1. The U-Control provides diagnostic information for
both automatic reset conditions and manual reset
conditions. See Figure 104, page 90 for information
available on the U-Control display.
2. Figure 111 shows the screen behavior during an
automatic or manual reset condition. The table
Figure 111
U-Control display toggles when in lockout, with screen flashing red to gray
Part number 550-100-090/0809
— Boiler Manual
(continued)
below the display illustration lists manual reset conditions and how
to reset from them.
3. Figure 112, page 102 lists conditions that will cause the control to dis-
play a constant red screen. The boiler will automatically restart if the
condition self-corrects or the technician uses the U-Control's manual
reset screens to reset.
101