Part Number
550-110-710/0107
53
GOLD CGi Gas-Fired Water Boiler — Boiler Manual
Troubleshooting — control module lights
(cont.)
11c
CHART 3
—
PRESS SWITCH & POWER lights flashing
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
and inducer has
completed its post-purge
cycle.
• Remove one of the wires connected to the pressure
switch.
• Check continuity across the switch terminals.
Does the ohmmeter indicate the switch is closed?
• Replace control
module.
• Retest.
• Check air pressure switch
per manual Section 11.
• Replace if necessary.
• Retest.
• Try reseating plug in
module receptacle and
restart.
• If inducer still does not
work, replace inducer
assembly.
• Retest.
No
Yes
• Wait 45 seconds.
Does inducer motor operate?
No
Yes
• Remove
INDUCER
plug (
Figure 38, Item 6
, page
50)
from plug receptacle of control module.
• Place voltmeter leads across the
120 VAC N
and
120 VAC H
pins of the
INDUCER
receptacle (left
column center and right column bottom pins).
Does the voltmeter indicate
120 VAC
?
No
Yes
Are vent or combustion air
passages blocked?
No
Yes
• Clear passages and
recycle boiler.
• Recheck boiler operation.
No
Yes
• Wait 5 minutes.
Is
PRESS SWITCH
light flashing?
• 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.
Does inducer motor operate?
No
Yes
— Usually indicates pressure switch stuck closed or failed to make within 5 minutes —
