AAON RM-030 - Manual (Page 22)

22
IGNITION CONTROL CHECKOUT PROCEDURE
NO
IS 24v AVAILABLE
AT
IGNITION CONTROL ?
NO
CORRECTION NECESSARY
IS 24v AVAILABLE AT
GAS VALVE ?
YES
YES
IS FLAME SENSOR
CABLE SECURELY
ATTACHED ?
NO
NO
YES
IS SENSOR
CERAMIC CRACKED
OR BROKEN ?
NO
IS SENSOR
LOCATED IN
BURNER FLAME ?
YES
REPLACE
SENSOR
ASSEMBLY
NO
YES
CHECK SENSOR
CABLE
CONTINUITY
NOT
O.K.
REPLACE CABLE
O.K.
REPLACE
IGNITION
CONTROL
CHECK GAS VALVE
WIRING FOR PROPER,
TIGHT CONNECTIONS
YES
IS GAS PRESSURE
PER MANUFACTURE'S
SPECIFICATIONS ?
YES
IS SPARK GAP
LOCATED IN GAS
STREAM ?
NO
SPARK IS PRESENT
BUT BURNER
WILL NOT LIGHT
NO
CHECK GAS SUPPLY
FOR OBSTRUCTIONS
OR CLOSED VALVES
REPLACE
GAS VALVE
NO
IS IGNITION CONTROL
LOCKED OUT ?
CHECK TRANSFORMER
AND / OR THERMOSTAT
FOR MALFUNCTION
REPLACE AS NECESSARY.
REPLACE OPEN LIMIT
YES
YES
NO
RESET BY TURNING
THE THERMOSTAT
TO "OFF"
THEN BACK TO HEAT
IS SPARK GAP 0.10 ?
YES
REGAP TO 0.10
IS ELECTRODE
CERAMIC CRACKED
OR BROKEN ?
NO
YES
NO
REPLACE ELECTRODE
IS HIGH VOLTAGE CABLE
FIRMLY ATTACHED AND
IN GOOD CONDITION ?
YES
NO
REPLACE CONTROL
REPLACE CABLE
OR CORRECT
CONNECTION
NO SPARK
ON
CALL FOR HEAT
IS THERE 24v AT
IGNITION CONTROL ?
SHOULD BE CLOSED
CHECK FUSES
WARNING: ALL SAFETY PRECAUTIONS MUST BE FOLLOWED WHEN EVALUATING
THE IGNITION CONTROL SYSTEM ON GAS HEATING UNITS.