GMES8 GCES8 Service Manual

SERVICING
43
SERVICE NUMBERS
S-1 CHECKING VOLTAGE .................................................................................................................................44
S-2 CHECKING WIRING .....................................................................................................................................44
S-3A THERMOSTAT AND WIRING ....................................................................................................................... 44
S-3B HEATING ANTICIPATOR .............................................................................................................................. 44
S-4 CHECKING TRANSFORMER AND CONTROL CIRCUIT ............................................................................ 45
S-16 CHECKING AIR CIRCULATOR BLOWER MOTOR (PSC) ..........................................................................45
S-200 CHECKING DUCT STATIC ...........................................................................................................................45
S-201 CHECKING TEMPERATURE RISE ..............................................................................................................46
S-300 CHECKING PRIMARY LIMIT CONTROL .....................................................................................................46
S-301 CHECKING AUXILIARY LIMIT CONTROL ................................................................................................... 47
S-302 CHECKING FLAME ROLLOUT CONTROL ..................................................................................................48
S-303 INDUCED DRAFT BLOWER MOTOR ..........................................................................................................48
S-304 CHECKING GAS VALVE (REDUNDANT) ....................................................................................................49
S-305 CHECKING MAIN BURNERS ......................................................................................................................49
S-306 CHECKING ORIFICES ................................................................................................................................. 49
S-307 CHECKING GAS PRESSURE ......................................................................................................................49
S-308 CHECKING HOT SURFACE IGNITOR ........................................................................................................52
S-309 CHECKING FOR FLASHBACK .................................................................................................................... 52
S-310 CHECKING PRESSURE CONTROL ...........................................................................................................52
S-311 HIGH ALTITUDE APPLICATION (USA) ........................................................................................................ 53
S-312 CHECKING FOR DELAYED IGNITION ........................................................................................................ 53
S-313 CHECKING INTEGRATED IGNITION CONTROL BOARDS .....................................................................53
S-314 CHECKING FLAME SENSOR ....................................................................................................................54