Service Manual

38
SERVICING
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-10B CAPACITANCE CHECK ......................................................................................................................... 45
S-15 CHECKING CAPACITOR ....................................................................................................................... 45
S-15A RESISTANCE CHECK ........................................................................................................................... 45
S-16A CHECKING AIR CIRCULATOR BLOWER MOTOR (PSC) ...................................................................... 46
S-200 CHECKING DUCT STATIC ..................................................................................................................... 46
S-201 CHECKING TEMPERATURE RISE ........................................................................................................ 46
S-300 CHECKING PRIMARY LIMIT CONTROL ................................................................................................ 47
S-302 CHECKING FLAME ROLLOUT CONTROL ............................................................................................ 48
S-303 INDUCED DRAFT BLOWER MOTOR .................................................................................................... 49
S-304 CHECKING GAS VALVE (REDUNDANT) ............................................................................................... 49
S-305 CHECKING MAIN BURNERS ................................................................................................................ 49
S-306 CHECKING ORIFICES ........................................................................................................................... 49
S-307 CHECKING GAS PRESSURE ............................................................................................................... 50
S-308 CHECKING HOT SURFACE IGNITOR ................................................................................................... 52
S-309 CHECKING FOR FLASHBACK.............................................................................................................. 52
S-310 CHECKING PRESSURE SWITCH ......................................................................................................... 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