Weil-McLain EG 6 Series Manual page 28

EG / PEG 6
sEriEs
Troubleshooting –
4. Using wrench or pliers on flat shaft section,
manually rotate damper blade until green light
turns on. Boiler will fire (Figure 11).
Do not leave vent damper permanently in
5.
this position
. Replace actuator immediately.
If vent damper is left in open position, boiler
will not operate at published efficiencies.
Figure 11
Manually opening vent damper
The information on this page and
pages 30 through 36 apply only to
spark-ignited pilot EG water boil-
ers. These boilers are equipped with
an ignition control module that
has indicator lights to show control
status. Charts
through 35, help you identify prob-
lems based on indicator light condi-
tions.
Figure 12
EG - Water Ignition Control Module
Control module
Solder or water splatter between
plugs and circuit board can cause im-
proper operation of control module.
Place a shield over the boiler internal
controls and components during
installation. Failure to comply could
result in severe personal injury, death
or substantial property damage.
28
EGH 5
•
sEriEs Gas
EG water boilers without tankless
1 7
through , pages 30
- — C
firEd boilErs
ground wiring
Make sure
Good grounding is extremely important for proper operation.
Control indicator lights —
HARD LOCKOUT Summary (Flashing LED's)
MAY remove 120VAC power for more than 2 seconds to clear lockout OR
ignition control will automatically restart sequence of operation after
1 hour waiting period after fault condition is cleared.
INDICATOR LIGHT
POWER
Flashes once per second
Flash code 2*
Flash code 3*
Flash code 4*
Flash code 5*
Flash code 6*
Flashes once per second
* Flash code pattern: POWER LED flashes 2, 3, etc. times
rapidly followed by 2 seconds off, then repeats.
ALL LED'S FLASHING
Solid LWCO LED
SOFT LOCKOUT Summary (Flashing LED's)
MAY remove 120VAC power for more than 2 seconds, cycle thermostat
for between 2 and 20 seconds, OR ignition control will automatically
restart sequence of operation after 1 hour waiting period.
INDICATOR LIGHT
POWER + TSTAT/CIRC
POWER + DAMPER
POWER + FLAME
CAUTION Summary (Flashing LED's)
INDICATOR LIGHT
DAMPER
LIMIT
FLAME
LWCO
Troubleshooting the control module
See Figure 13, page 29, for location of harness plug receptacles and plugs on
the control module.
s
ontrol uPPlEmEnt
)
is installed per wiring diagram.
CONDITION
120 VAC connection to boiler
reversed.
Internal fault, microprocessor or
memory.
Unused.
Unused.
Internal fault, water thermistors
disagree.
Internal fault, gas valve circuit.
Failure to establish pilot
flame after 4 attempts.
Low water condition occurred.
CONDITION
High voltage detected on TSTAT circuit.
Damper stuck closed or unable to close end
switch within 45 seconds from TSTAT call.
Flame sensed without call for heat or out
of sequence during ignition trial.
CONDITION
Damper end switch opened after it had
been proven closed.
Fault detected in temperature sensing
hardware.
Flame loss or flame not sensed during
trial for ignition.
LWCO circuit approaching lockout state.
Sensor requires maintenance. LWCO
LED will flash 3 times when maintenance
is required.
Part Number 550-142-304/1220