Weil-McLain CGi 4 Series Manual page 51

CGi
SERIES 4 — GAS-FIRED WATER BOILER —
11b
Troubleshooting — components
The information on this page and
pages 52 through 60 apply only to
spark-ignited pilot CGi boilers.
These boilers are equipped with
an ignition control module that
has indicator lights to show control
status. Charts
53-60, help you identify problems
based on indicator light condi-
tions.
Figure 37 Control module
Control module
Solder or water
tween plugs and circuit board
can cause improper operation
of control module. Place a
shield over the boiler inter-
nal controls and components
during installation. Failure to
comply could result in severe
personal injury, death or sub-
stantial property damage.
Make sure
installed per wiring diagram.
Good grounding is extremely
important for proper opera-
tion.
Part Number 550-142-302/0520
Control indicator lights —
LOCKOUT modes
See Charts 1 through 8 in this section for detailed troubleshoot-
ing procedures.
Control indicator lights —
HARD LOCKOUT Summary (Flashing LED's)
through 8, pages
1
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
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 + PURGE
POWER + FLAME
splatter be-
CAUTION Summary (Flashing LED's)
INDICATOR LIGHT
PURGE
LIMIT
FLAME
LWCO
is
ground wiring
Troubleshooting the control module
See Figure 38, for location of harness plug receptacles and plugs on the
control module.
Boiler Manual
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51