Fulton Caliber (CAL) Condensing Hydronic Boiler - Manual (Page 51)

Questions? Please Contact Your Local Manufacturer’s Representative
SECTION 4
CAL-IOM-2014-0129
MAINTENANCE
4-7
PROBLEM CAUSE CHECK/SOLUTION
Manual Reset limit device
trips
Manual Reset Limits include: Flame safeguard, high
or low gas pressure, high temperature limit
DO NOT reset without determining and correcting
the cause. Contact your local representative/
qualifi ed service technician.
Power outage to the boiler
room
Entire boiler system is disabled and de-energized. When power has returned, the boiler will restart
unless it was in lockout position at time of outage.
Gas Pressure alarm is
annunciated
Either insuffi cient gas pressure or the gas pressure
to the manifold is too high for safe and proper
operation of the boiler. This shuts down the burner.
When gas pressure is restored, the annunciated
alarm will remain on and the boiler will remain
locked out until the gas pressure switch is manually
reset.
Locate cause and correct. In the event of a high
gas manifold pressure condition, qualifi ed service
personnel must correct the problem before
restarting the boiler.
High water temperature
alarm is annunciated
Boiler water has exceeded both the operating and
high-limit temperature. When the water temperature
falls below the high-limit temperature, the boiler will
remain locked out until the controller is manually
reset.
Locate cause and correct. Once the SOLA control
is reset, the sequence returns to normal operation
provided that the other limits are satisfi ed.
Insuffi cient fl ow of heat
transfer medium causes
lock out
Boiler requires minimum fl ow; when required fl ow is
resumed, boiler will resume operation.
Identify and correct.
Low Air Flow Supply/
Air Switch Open Low Air is annunciated if the airfl ow switch detects
low airfl ow through the boiler.
The air switch has been factory set and should not
be adjusted in the fi eld.
An extended low air indicaƟ on does not mean that
the low air switch is defecƟ ve.
Check that blower is powered and feedback plugs
are clipped into the blower.
Check that the blower is clean by observing
through the venturi. Check the blower purge speed
and low fi re speed is correctly displayed on the
touch screen.
Check for obstrucƟ ons in the vent.
Check for obstrucƟ ons in the air inlet.
High Back Pressure Switch
trip/boiler shutdown Excessive Vent Pressure This condiƟ on will automaƟ cally recycle, so
the boiler will try to relight. The vent and heat
exchanger should be checked for obstrucƟ ons and
cleaned.
Main fl ame failure during
fi ring period Main gas control valve is de-energized and the con-
trol goes into “lockout” mode. Flame failure occurs
and the indicator is illuminated. The programmer must be manually reset.
IgniƟ on Failure If fl ame rod does not detect the fl ame during the
4-second trial-for-igniƟ on period, the gas valve and
spark igniƟ on are de-energized. At this Ɵ me a safety
lockout occurs. IdenƟ fy and correct; reset via the SOLA Control.