IBC Technologies Inc.
46
VFC 15-150 and VFC 45-225
Maximum
Ignition
Trials
Error
LCD Screen Message
Error – Ignition Failure after 3
tries
Boiler has failed to ignite on 3 successive attempts.
Boiler in lockout for 1 hour, then repeats 3-try seq.
Consult service technician if error recurs.
No spark when igniting
Igniter probe/flame sensor
disconnected.
•
Check that igniter lead is secure at the control
module and at the probe.
Manual gas shutoff is closed or
gas line not fully purged.
•
Check for gas flow. Open manual gas shutoff and
reset boiler.
Gap between igniter probe and
burner is too large or too small.
•
Adjust gap between igniter probe/flame sensor and
burner to a distance of 3/16” (turn off gas supply
and remove viewport for best visibility; use profile
of 1/8” diameter ignitor rod to gauge distance)
Spark, but no ignition
•
Check spark module is sending power to gas valve
– close gas supply, then disconnect (black) electric
housing from face of gas valve, gently spread
plastic tabs to open, and look for 24vac voltage
between blue and brown wires during an ignition
cycle. Replace module if no current detected
Boiler ignites, but shuts off at
the end of the ignition trial
Improperly grounded pressure
vessel/burner or unserviceable
ignition lead or spark module
•
Ensure pressure vessel is grounded.
•
Check the igniter probe/flame sensor is electrically
isolated from the vessel, and its ceramic insulator is
intact.
•
Replace ignition lead
•
Replace spark module
Hi Limit Error
LCD Screen Message
Error – Water High-Limit
Exceeded
Water temperature exceeds hi-limit.
Boiler in hard lockout. Will reset in 1 hour. Consult
service technician.
Defective or disconnected hi-
limit switch.
•
Check wiring to hi-limit switch and control
module.
•
Check hi-limit switch - see
Section 4.3.2.5
.
Vent Hi-Limit Error
LCD Screen Message
Error - Vent High-Limit Exceeded
*** Call for service!
Vent temperature has exceeded the vent limit switch.
Boiler in lockout. Consult service technician.
•
Check wiring to ensure sensor is properly
connected to control module.
•
Check for evidence of any damage to vent system.
•
Push manual reset button, maintain constant watch
during boiler operation to evaluate vent
temperature at maximum operating settings to
ensure no unsafe condition exists, e.g. max flue
temp. within allowable limits for exhaust pipe
material used.
