Troubleshooting Chart I - Dunkirk 90-50 Installation, Operation & Maintenance Manual

TROUBLESHOOTING CHART I
Electrical shock hazard may cause Serious
inj ury o r deat h.
The following procedures may expose you to
da ng ero us line volta ge. Use ca ut io n to avoid
touching live electrical contacts. Service
must be performed by a trained, experienced
service technician.
What to do if yousmell gas:
Do not try to lightanyappliance
Do not touch any electrical switch; do not use
any phone in your bu ilidn g.
Immediatley call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instruction.
,_ If you can not reach your gas supplier, call the
fire department.
Should overheating occur or the gas supply
fail to shut off, do not turn off or disconnect
the electrical supply to the pump. Instead,
shut off the gas at a location external to the
appliance.
Do not use the boiler if any part of the gas
control system has been under water a
qualified service technician should inspect
the boiler and replace any part of the control
system and any gas control which has been
under water.
Use only your hand to turn the gas control
kno b. Never use to ols. If t he. Kno b will not
turn by hand. Don't try to repair it. Force
or attempted repair may result in a fire or
iiiiiiiiiiiiiiiiiiiiiii ,o ,on
FALSE POSITIVE PROOF OF AIRFLOW. CHECK
AIR PRESSURE SWITCH CONTACTS,
IF CONTACTS ARE CLOSED WITH NO
AIRFLOW, REPLACE PRESSURE SWITCH.
CLOSED
F
GREEN POWER INDICATOR LIGHT IS
ILLUMINATED ON THE IBC,
_l YES
CHECK SYSTEM STATUS. IF LOCKED
OUT NOTE FAILURE MODE. WHICH
INDICATOR LIGHT IS BLINKING?
RESET SYSTEM BY TURNING SERVICE
SWITCH OFF THEN ON. IF NOT
LOCKED OUT, SET THERMOSTAT TO
CALL FOR HEAT.
L
CIRCULATOR STARTS?
YES
NO
r
IBC CHECKS NORMALLY OPEN AIR
PRESSURE SWITCH CONTACTS
OPEN
CHART 3
INO _
ICHART
2
CHART 2