38
SERVICING
SERVICE NUMBERS
S-1
CHECKING VOLTAGE ................................................................................................................................. 45
S-2
CHECKING WIRING .................................................................................................................................... 45
S-
3A
THERMOSTAT AND WIRING .......................................................................................................................
45
S-3B
HEATING ANTICIPATOR .............................................................................................................................. 45
S-4
CHECKING TRANSFORMER AND CONTROL CIRCUIT .............................................................................. 46
S-16A
CHECKING AIR CIRCULATOR BLOWER MOTOR (EEM) ........................................................................... 46
S-200
CHECKING DUCT STATIC ........................................................................................................................... 46
S-201
CHECKING TEMPERATURE RISE ............................................................................................................. 45
S-300
CHECKING PRIMARY LIMIT CONTROL ...................................................................................................... 45
S-301
CHECKING AUXILIARY LIMIT CONTROL .................................................................................................... 48
S-302
CHECKING FLAME ROLLOUT CONTROL .................................................................................................. 50
S-303
INDUCED DRAFT BLOWER MOTOR .......................................................................................................... 50
S-304
CHECKING GAS VALVE (REDUNDANT) .................................................................................................... 50
S-305
CHECKING MAIN BURNERS ...................................................................................................................... 51
S-306
CHECKING ORIFICES ................................................................................................................................ 51
S-307
CHECKING GAS PRESSURE ..................................................................................................................... 51
S-308
CHECKING HOT SURFACE IGNITOR ......................................................................................................... 54
S-309
CHECKING FOR FLASHBACK ................................................................................................................... 54
S-310
CHECKING PRESSURE CONTROL ........................................................................................................... 54
S-311
HIGH ALTITUDE APPLICATION (USA) ......................................................................................................... 55
S-312
CHECKING FOR DELAYED IGNITION ........................................................................................................ 55
S-313
CHECKING INTEGRATED IGNITION CONTROL BOARDS ........................................................................ 55
S-314
CHECKING FLAME SENSOR ................................................................................................................... 56