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Part number 550-100-260/0520
121
ECO
®
Tec
GAS-FIRED WATER BOILER – 80/110/150/199 BOILER MANUAL
Faults
Display Condition Diagnostics Corrective Action(s)
IGNITION 1 FAULT
IGNITION 2 FAULT
FLAME LOSS FAULT
Boiler went through 5
ignition attempts and never
detected ame or ame
sense value never reached
minimum threshold for
boiler model.
Boiler went through 5
ignition attempts and did
not meet running ame
threshold for boiler model.
Boiler went through 5
ignition attempts and
ame value dropped below
Proof of Ignition during
stabilization time of ignition.
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 ignition electrode can be cleaned for additional
use with steel wool.
Worn or badly fouled ignition electrode should be
replaced with the proper repair part.
Igniter rods should be parallel with a 4.5 mm (0.177 in)
spark gap.
NOTICE: Thin white deposits on the igniter are typical,
but brown or black deposits could be the result of ue
gas recirculation. Thoroughly inspect the venting system
and termination for the possibility of leakage or ue 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
ue ways may not be sucient to diagnose condition.
Check combustion settings on high and low re and
adjust per setup instructions if necessary. Check ame
signal during combustion testing according to page109
section “Check ame signal.
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 5,500 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 venturi. (Propane
models use dierent venturi’s).
AIR PRESSURE
Switch Open
Occurs when Air Pressure
connection is open.
Reset using Manual Reset screen
on display.
Check boiler size selected in control against boiler rating
label. Correct if necessary to select the proper boiler
size.
Check the factory jumper on J22 connection as seen on
Figures70,page66 and Figure71,page68.
Closure Switch fault Proof of Closure connections
on J18 a Pins 2 and 3 are
open.
Soft lockout for 4 minutes then
unlocks and checks for up to 4
minutes. If still open, soft lockout
for 4 minutes. Repeats once more
then a manual lockout.
None - Check jumper on correct pins and secure
connection.
Flow switch attached - Check correct pump is on, check
wiring to ow switch and check switch is closing.
CAD - Check voltage to damper. Check damper is
opening.
Troubleshooting (continued)
Troubleshooting suggestions —
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