Schwank 2300 Series Installation & Owner's Manual page 22

MAIN BURNERS LIGHT
YES
SPARK STOPS WHEN
BURNERS ARE LIT.
YES
DOES FLAME REMAIN STABLE
AFTER THE SPARK CYCLE IS
COMPLETE. (NO FLAME FAIL)
YES
SYSTEM RUNS UNTIL
CALL FOR HEAT ENDS
CALL FOR HEAT ENDS;
SYSTEM SHUTS OFF
TROUBLE SHOOTING ENDS
NOTE: IF CONTROL GOES INTO LOCKOUT, THE SYSTEM CAN BE
RESET BY INTERRUPTING THE POWER SOURCE:
*CHECK FOR CORRECT MANIFOLD GAS PRESSURE
*CHECK FOR OBSTRUCTION IN GAS OR ORIFICE
(INSECTS, SPIDERS COCOONS ETC.)
NO
CHECK FLAME SIGNAL WITH METER FOR 0.7µA.
IF READING IS LOW CHECK GAS PRESSURE, IF OK
CHANGE SENSOR.
CHECK FOR CONTINUITY OR SENSOR CABLE AND
GROUND WIRE.
CHECK THAT BURNER FLAME COVERS ALL ELEC-
NO
TRODES. IF CHECKS ARE OKAY, REPLACE CON-
TROL MODULE.
CHECK SENSOR FLAME SIGNAL WITH METER FOR
0.7µA MINIMUM STEADY READING.
IF READING IS LOW CHECK GAS PRESSURE, IF OK
.....CHANGE SENSOR.
CHECK FOR CONTINUITY OR SENSOR CABLE AND
GROUND WIRE.
CHECK THAT BURNER FLAME COVERS ALL ELEC-
NO
TRODES. IF CHECKS ARE OKAY, REPLACE CON-
TROL MODULE.
NOTE: IF GROUND IS POOR OR ERRATIC, SHUT-
DOWN MAY OCCUR OCCASIONALLY EVEN THOUGH
OPERATION IAPPEARS NORMAL AT THE TIME.
CHECK FOR PROPER TEMPERATURE CONTROLLER
OPERATION.
CHECK SENSOR FLAME SIGNAL WITH METER FOR
0.7µA MINIMUM STEADY READING.(REPEAT ABOVE)
NO
CHECK AND ADJUST TEMPERATURE CONTROLLER
SETTING AND CHECK CONTROLLER CONNECTIONS
CHECK FOR PINCHED WIRING.
REMOVE VALVE LEAD AT CONTROL IF VALVE
CLOSES, RECHECK TEMPERATURE CONTROLLER
AND WIRING;
IF VALVE DOES NOT CLOSE REPLACE GAS VALVE..
Page 18
2300 / IO 210 Manual
IM091231
RD: DEC 2009
R.L. 11B
BA