Spark-Ignited Pilot — Damper Light Flashing - Weil-McLain Gold CGa Installation And Maintenance Instructions Manual

GOLD CGa Gas-Fired Water Boiler — Boiler Manual
11c
Troubleshooting — spark-pilot boilers
— 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 —
Electrical shock hazard — Wherever you see
instructions could result in severe personal injury, death or substantial property damage.
• 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.
• Wait 45 seconds.
Does vent damper operate?
No
• 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
Are the TSTAT CIRC and LIMIT lights on steady?
Yes
• Replace control
module.
• Retest.
5
CHART 4 — Spark-ignited pilot — DAMPER light flashing
Does vent damper operate?
No
Yes
Yes
• Try reseating plug in
module receptacle and
restart.
• If vent damper still does
not work, replace vent
damper assembly or
actuator.
• Retest.
No
• Make sure thermostat is
calling for heat. If lights
still don't come on, see
Chart 7, page 59.
TURN OFF POWER , follow the instructions. Failure to follow
• Wait 5 minutes.
Is PRESS SWITCH light flashing?
No
• Boiler should be in
normal operating
sequence.
• Observe operation until
thermostat is satisfied.
• Replace vent damper
assembly or actuator.
• Retest.
(continued)
Yes
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.
Part Number 550-101-009/0107