Ultra Boiler Manual
Part number 550-100-440/0122
122
Display
Condition Diagnostics Corrective Action(s)
BLOWER FAULT
Blower unable to reach
required speed or does not
reach 0 RPM when turned o.
Automatically resets after 1 hour
or can be reset by using manual
reset on screen.
Check wire harness for loose connections and pin engagement at blower
connections, chassis mount connection through sheet metal cabinet,
and U-Control module. Unplug connection at sensor and at U-Control
and check continuity between ends. Blower is connected to both low
voltage and line voltage harness.
Check Diagnostics - Inputs screen with boiler in standby mode and
blower not running. If BLOWER SPEED is not 0 RPM then replace blower.
If blower does not rotate during ignition sequence check for 120V power
at blower connection. If 120Vac power at blower motor and it doesn't
start replace blower. Check power at U-Control. If 120Vac is not present
at U-Control when boiler is powered replace U-Control. Refer to repair
parts section.
IGNITION
FAULT
Boiler went through 5 ignition
attempts and never detected
ame.
Automatically resets after 1 hour
or can be reset by using manual
reset on screen.
Check condensate trap for blockage allowing condensate to accumulate
inside heat exchanger
Fouled, worn, bent, or faulty igniter.
Fouled igniters can be cleaned for additional use with ne grit sand
paper or steel wool.
Worn or badly fouled igniters should be replaced with the proper repair
part.
Igniter rods should be parallel with a 3.5mm (0.138 in) spark gap.
Dirty burner and/or heat exchanger will cause high back pressure and
poor ignition. Follow procedure in the Maintenance section of this
manual to clean burner and heat exchanger using ue cleaning tool and
rinse method.
Visual inspection of ueways will often will not be able to diagnose
condition.
Check combustion settings on high and low re and adjust per setup
instructions if necessary.
Check incoming gas pressure with boiler o and at high re. Adjust
within limits on rating label.
Verify correct boiler model is selected in control and high altitude is
selected for installations 5500 ft above sea level.
Check ignition cable resistance. Should measure 1000 Ohms (+/- 50
Ohms)
Check for ue pipe and intake pipe restrictions or blockage
Check burner fasteners and gaskets
Check venturi gaskets and proper propane orice
Check condensate trap for blockage allowing condensate to accumulate
inside heat exchanger
(continued)
Figure 125 Troubleshooting suggestions for Ultra boilers (continued)