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TROUBLESHOOTING
CHART #1
GREEN
POWER
INDICATOR
LIGHT
IS
iLLUMINATED
ON THE
IBC.
_7 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.
CIRCULATOR
STARTS?
YES
FALSE
POSITIVE
PROOF
OF AIRFLOW.
CHECK
AIR PRESSURE
SWITCH
CONTACTS,
IF CONTACTS
ARE
CLOSED
WITH
NO
AIRFLOW,
REPLACE
PRESSURE
SWITCH.
CLOSED
CHART2
_r
MALLY
OPEN
AI_
CH CONTACTS
OPEN
CHART3
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