Miscellaneous Issues - IBC VX Series Installation & Operating Manual

8.3.3 Miscellaneous issues

Issue Diagnosis
Fumes and Improperly installed
High condensate trap
Humidity
Leak in vent piping
Flue gas leak within
boiler
'Ghost' call Triac or 'Power-
for heat. robbing' thermostat
sending current to
boiler.
Error: Water Boiler is in 1-hour
High Limit / safety lockout.
Low Water
Cutoff won't
clear.
DHW taking Sensor may be under-
too long to reading actual water
heat. temp.
Boiler output Possible flow issue:
not check for 35 or 40 °F
modulating temperature difference
up to between boiler supply
maximum and return water
despite temperatures (evokes
target not electronic fence).
being
reached.
Primary Wiring not complete.
Pump runs
but load
pumps do
not.
Miscellaneous issues
Refer to installation/operation instructions.
Inspect using soap solution.
Visually inspect all mechanical connections.
Remove Therm. connections from boiler to confirm that
stray voltage, or current induced in thermostat wiring, is
source of nuisance signal. Replace the Power Robbing
thermostat, isolate the thermostat with a relay or install a
properly sized resistor (consult the thermostat
manufacturer first then IBC for instructions).
For instructions on clearing errors, see
after a hi-limit temperature lockout on page 88
Resetting a boiler after a LWCO lockout on page
Check sensor engagement; note well is 15 cm / almost 6
inches deep and sensor must be fully set to back. Check
programmed settings boiler temp set too close to the
required DHW temperature.
Confirm that primary pump is able to overcome head loss
of boiler and primary loop piping at the required flow rate.
Supply power to the PV/L and PV/N terminals from the
incoming power supply to the boiler. (Factory wired on
boilers with a factory installed touchscreen controller)
94
Section: Troubleshooting
Fix
Resetting a boiler
and
88.