GOLD CGa Gas-Fired Water Boiler — Boiler Manual
56
Part Number
550-101-009/0107
• Reset boiler control by turning off power at service switch or turning down thermostat for at least 45 seconds.
• Thermostat should call for heat and appropriate zone valves open. The
TSTAT CIRC
and
LIMIT
lights should come on.
Does vent damper operate?
Electrical shock hazard — Wherever you see
TURN OFF POWER
, follow the instructions. Failure to follow
instructions could result in severe personal injury, death or substantial property damage.
• Boiler should be in
normal operating
sequence.
• Observe operation until
thermostat is satisfied.
Are the
TSTAT CIRC
and
LIMIT
lights on steady?
• Replace control
module.
• Retest.
• Make sure thermostat is
calling for heat. If lights
still don't come on, see
Chart 7, page 59.
• Try reseating plug in
module receptacle and
restart.
• If vent damper still does
not work, replace vent
damper assembly or
actuator.
• Retest.
No
Yes
• Wait 45 seconds.
Does vent damper operate?
No
Yes
• Remove
DAMPER
plug (
Figure 30, Item 6
, page 53
)
from plug receptacle of control module.
• Place voltmeter leads across the top two pins (1 and 4)
of the
DAMPER
receptacle.
Does the voltmeter indicate
24 VAC
?
No
Yes
Does vent damper actuator
indicator show damper is
open?
No
Yes
• Remove damper wiring
plug at damper and firmly
reconnect.
• Recheck boiler operation.
• If problem persists,
replace vent damper
assembly or actuator.
No
Yes
Yes
No
— If POWER light is flashing: Usually indicates vent damper failed to prove open within 5 minutes —
— If POWER light is steady: Usually indicates vent damper closed during run cycle —
• Replace vent damper
assembly or actuator.
• Retest.
• Wait 5 minutes.
Is
PRESS SWITCH
light flashing?
CHART 4
—
Spark-ignited pilot
—
DAMPER
light flashing
11c
Troubleshooting — spark-pilot boilers
(continued)
