Sterling SHR150, Руководство пользователя

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10
TROUBLE SHOOTING GUIDE
SERVICE HINTS AND MAINTENANCE
CAUSE AND CORRECTIONS
TURN THERMOSTAT TO CALL FOR HEAT
24 VOLTS AT CONTROL TRANSFORMER
24 VOLT AT CONTROL
24 VOLTS OUT CONTROL
24 VOLTS AT GAS CONTROL
SPARK ACROSS IGNITER
OR IGNITER/SENSOR GAP
MAKE SURE THE MANUAL
LEVER ON THE VALVES
ARE OPEN AND THAT
THERE IS GAS GOING TO
THE VALVES.
MAIN BURNERS LIGHT
SPARKS STOPS
WHEN BURNERS
ARE LIT.
SYSTEM RUNS UNTIL
CALL FOR HEAT ENDS
CHECK FOR LINE VOLTAGE POWER SUPPLY
CHECK 24V WIRING FROM IGNITION CON-
TROL TO GAS VALVE
PULL IGNITION LEAD AND CHECK SPARK AT
IGNITION STUD.
CAUTION: HIGH VOLTAGE
SPARK OKAY??
CHECK 24V WIRING FROM TRANSFORMER
TO IGNITION CONTROL
REPLACE CONTROL
REPLACE TRANSFORMER
CHECK IGNITION CABLE, GROUND WIRE, CERAMIC INSULA-
TOR AND CAP, AND CORRECT. CHECK BOOT OF THE IGNI-
TION CABLE FOR SIGNS OF MELTING OR BUCKLING. TAKE
PROTECTIVE ACTION TO SHIELD CABLE & BOOT FROM EX-
CESSIVE TEMPERATURES.
CHECK FOR 24 VAC ACROSS VALVES AND VALVES TERMI-
NALS ON CONTROL IF NO VOLTAGE, REPLACE CONTROL.
SPARK IGNITERS MAY BE OUT OF POSITION. CHECK ELEC-
TRICAL CONNECTIONS BETWEEN CONTROL & GAS VALVES IF
OKAY, REPLACE GAS VALVES OPERATOR.
YES
NO
YES
NO
YES
YES
YES
YES
NO
YES
NO
NO
NO
NO
NOTE: IF CONTROL GOES INTO LOCKOUT, RESET SYSTEM BY
INTERRUPTING POWER SOURCE.
CHECK CONTINUITY OR SENSOR CABLE AND GROUND WIRE.
CHECK THAT BURNER FLAME COVERS ALL ELECTRODES.
CHECK GROUND CONTINUITY. IF CHECKS ARE OKAY, RE-
PLACE CONTROL MODULE.
NOTE: IF CONTROL GOES INTO LOCKOUT, RESET SYSTEM BY
INTERRUPTING POWER SOURCE.
CHECK CONTINUITY OR SENSOR CABLE AND GROUND WIRE.
NOTE: IF GROUND IS POOR OR ERRATIC, SHUTDOWN MAY
OCCUR OCCASIONALLY EVEN THOUGH OPERATIONS IS NOR-
MAL AT THE TIME OF CHECKOUT.
IF CHECKS ARE OKAY, REPLACE CONTROL MODULE.
YES
YES
NO
YES
NO
CHECK FOR PROPER TEMPERATURE CONTROLLER OPERA-
TION. REMOVE VALVE LEAD AT CONTROL IF VALVE CLOSES,
RECHECK TEMPERATURE CONTROLLER AND WIRING; IF NOT,
REPLACE GAS VALVE OPERATOR.
CALL FOR HEAT ENDS;
SYSTEM SHUTS OFF
YES
TROUBLE SHOOTING ENDS
YES
NO
REPEAT PROCEDURE UNTIL TROUBLE FREE OPERATIONS IS OBTAINED.