Miscellaneous Issues - IBC Sl Series Installation & Operating Manual

8.3.3 Miscellaneous issues

Issue
Fumes and High Humidity
'Ghost' call for heat.
Error: Water High Limit / Low Water
Cutoff won't clear.
DHW taking too long to heat.
Boiler output not modulating up to
maximum despite target not being
reached.
Miscellaneous issues
Diagnosis
Improperly Refer to installation/operation
installed instructions.
condensate
trap
Leak in vent Inspect using soap solution.
piping
Flue gas leak Visually inspect all mechanical
within boiler connections.
Triac or Remove Therm. connections from
'Power- boiler to confirm that stray voltage, or
robbing' current induced in thermostat wiring, is
thermostat source of nuisance signal. Replace the
sending Power Robbing thermostat, isolate the
current to thermostat with a relay or install a
boiler. properly sized resistor (consult the
thermostat manufacturer first then IBC
for instructions).
Boiler is in 1- For instructions on clearing errors, see
hour safety the V10 Touchscreen Controller
lockout. manual.
Sensor may be Check sensor engagement; note well is
under-reading 15 cm / almost 6 inches deep and
actual water sensor must be fully set to back. Check
temp. programmed settings boiler temp set
too close to the required DHW
temperature.
Possible flow Confirm that the boiler pump is able to
issue: check overcome head loss of boiler and
for 35 or 40 °F primary loop piping at the required flow
temperature rate.
difference
between boiler
supply and
return water
temperatures
(evokes
electronic
fence).
98
Section: Troubleshooting
Fix