GMEC96 Service Manual

42
SERVICING
SERVICE NUMBERS
S-1 CHECKING VOLTAGE ................................................................................................................................. 49
S-2 CHECKING WIRING .................................................................................................................................... 49
S-3A THERMOSTAT AND WIRING ....................................................................................................................... 49
S-3B HEATING ANTICIPATOR .............................................................................................................................. 49
S-4 CHECKING TRANSFORMER AND CONTROL CIRCUIT .............................................................................. 50
S-16A CHECKING AIR CIRCULATOR BLOWER MOTOR (EEM) ........................................................................... 50
S-200 CHECKING DUCT STATIC ........................................................................................................................... 50
S-201 CHECKING TEMPERATURE RISE ............................................................................................................. 51
S-300 CHECKING PRIMARY LIMIT CONTROL ...................................................................................................... 51
S-301 CHECKING AUXILIARY LIMIT CONTROL .................................................................................................... 52
S-302 CHECKING FLAME ROLLOUT CONTROL .................................................................................................. 54
S-303 INDUCED DRAFT BLOWER MOTOR .......................................................................................................... 54
S-304 CHECKING GAS VALVE (REDUNDANT) .................................................................................................... 54
S-305 CHECKING MAIN BURNERS ...................................................................................................................... 55
S-306 CHECKING ORIFICES ................................................................................................................................55
S-307 CHECKING GAS PRESSURE..................................................................................................................... 55
S-308 CHECKING HOT SURFACE IGNITOR ......................................................................................................... 58
S-309 CHECKING FOR FLASHBACK ................................................................................................................... 58
S-310 CHECKING PRESSURE SWITCH ............................................................................................................... 58
S-311 HIGH ALTITUDE APPLICATION (USA) ......................................................................................................... 59
S-312 CHECKING FOR DELAYED IGNITION ........................................................................................................ 59
S-313 CHECKING INTEGRATED IGNITION CONTROL BOARDS ........................................................................ 59
S-314 CHECKING FLAME SENSOR ................................................................................................................... 60