CGi Manual

Part Number 550-142-302/0520
CGi
SERIES 4 — GAS-FIRED WATER BOILER — Boiler Manual
51
Troubleshooting — components (continued)
11b
Figure 37 Control module
Control module
Solder or water splatter be-
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 ground wiring is
installed per wiring diagram.
Good grounding is extremely
important for proper opera-
tion.
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
1 through 8, pages
53-60, help you identify problems
based on indicator light condi-
tions.
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)
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 CONDITION
POWER




 

 
 
 






  


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 CONDITION
POWER + TSTAT/CIRC 
POWER + PURGE   
POWER + FLAME   

CAUTION Summary (Flashing LED’s)
INDICATOR LIGHT CONDITION
PURGE 

LIMIT     

FLAME     

LWCO 
 


Troubleshooting the control module
See Figure 38, for location of harness plug receptacles and plugs on the
control module.

