GOLD CGa Gas-Fired Water Boiler
52 Part Number 550-110-593/1099
Troubleshooting — spark-ignited pilot boilers11 c
Make sure ground wiring is installed per wiring
diagram. Good grounding is extremely important for
proper operation.
Control indicator lights —
non-lockout modes
FLAME light flashing alone
Usually indicates pilot flame was not established within
15 seconds from application of spark. Control will flash
light, but will continue to cycle indefinitely until flame
is established or problem is corrected.
DAMPER light flashing alone
Usually indicates damper opened during run cycle.
Boiler will not lockout, but won’t heat unless problem
is corrected.
Troubleshooting the control
module
See Figure 30, page 53, for location of harness plug
receptacles and plugs on the control module.
Control indicator lights —
lockout modes
See Charts 2 through 7, pages 54-59 in this section, for
detailed troubleshooting procedures.
To reset control after a lockout, turn off power at the
120 VAC service switch or turn down all thermostats.
Wait 45 seconds. Then restore power or call for heat.
POWER light flashing alone
Usually indicates reversed polarity of 120 VAC power
wires.
POWER and TSTAT CIRC lights flashing
Usually indicates stray voltage on external thermostat
circuit wires (usually due to miswired 3-wire zone valve).
POWER
and DAMPER lights flashing
Usually indicates vent damper failed to open within
5 minutes.
POWER
and FLAME lights flashing
Usually indicates false flame sense or flame sensed when
it shouldn’t be there.
Solder or water splatter between plugs and circuit
board can cause improper 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.
The information on this page and pages 53 through 59
apply only to spark-ignited pilot CGa boilers. These
boilers are equipped with an ignition control module
that has indicator lights to show control status. Charts
2
through 7, pages 54-59, help you identify problems
based on indicator light conditions.
Figure 29 CGa Ignition control module
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