Display
Condition
Diagnostics
Corrective Action(s)
IGNITION
FAULT
Boiler went through 5
ignition attempts and never
detected flame.
Automatically resets after 1 hour
or can be reset by performing
manual reset on boiler.
Check condensate trap for blockage allowing condensate to accumulate
inside heat exchanger.
Check ignition cable connection.
Fouled, worn, bent, or faulty igniter.
Fouled igniters can be cleaned for additional use with steel wool.
Worn or badly fouled igniters should be replaced with the proper repair
part.
Igniter rods should be parallel with a 3.5 mm (0.236 in) spark gap (70 &
110 models) or a 4.8 mm (0.189 in) spark gap (155 models).
Thin white deposits on the igniter are typical, but brown or
black deposits could be the result of flue gas recirculation. Thoroughly
inspect the venting system and termination for the possibility of leakage
or flue gas feedback into the air line.
Dirty burner and/or heat exchanger will cause high back pressure and
poor ignition.
Follow procedure in maintenance section of this manual to clean burner
and heat exchanger. Visual inspection of flue ways may not be sufficient
to diagnose condition.
Check combustion settings on high and low fire and adjust per setup
instructions if necessary.
Check incoming gas pressure with boiler off and at high fire. Adjust
within limits on rating label.
Verify correct boiler model is selected in control and high altitude is
selected for installations 5,500 feet above sea level.
Check ignition cable resistance. Should measure 1000 Ohms (+/- 50
Ohms).
Check for flue pipe and intake pipe restrictions or blockage.
Check burner fasteners and gaskets.
Check venturi gaskets and proper propane orifice.
Figure 109
Troubleshooting suggestions for
ECO
boilers —
Fault displays, diagnostics and corrective actions
Troubleshooting
(continued)
Part number 550-142-190/1218
102
®
S
ERIES
2
G
AS
-
FIRED
WATER
BOILER
—
Boiler Manual
