3
INDEX
S-106 OVERFEEDING.........................................................................................................................52
S-107 UNDERFEEDING......................................................................................................................52
S-108 SUPERHEAT .............................................................................................................................53
S-109 CHECKING SUBCOOLING .....................................................................................................54
S-110 CHECKING EXPANSION VALVE OPERATION .......................................................................54
S-111 FIXED ORIFICE RESTRICTION DEVICES .............................................................................55
S-112 CHECKING RESTRICTED LIQUID LINE................................................................................55
S-113 OVERCHARGE OF REFRIGERANT........................................................................................55
S-114 NON-CONDENSABLES ...........................................................................................................55
S-115 COMPRESSOR BURNOUT ....................................................................................................55
S-200 CHECKING EXTERNAL STATIC PRESSURE........................................................................56
S-301 TESTING AUXILIARY LIMIT.....................................................................................................57
S-302 CHECKING FLAME ROLLOUT SWITCH................................................................................57
S-304 TESTING GAS VALVE...............................................................................................................58
S-306 CHECKING ORIFICES .............................................................................................................60
S-307 CHECKING GAS PRESSURE..................................................................................................60
S-308 CHECKING FOR DELAYED IGNITION ...................................................................................61
S-309 CHECKING FOR FLASHBACK................................................................................................61
S-310 CHECKING PRESSURE CONTROL ......................................................................................61
S-311 HIGH ALTITUDE APPLICATION...............................................................................................66
S-313 TESTING IGNITION CONTROL MODULE ............................................................................66
S-314 CHECKING FLAME SENSOR..................................................................................................68
S-315 CHECKING HOT SURFACE IGNITER ....................................................................................70
WIRING DIAGRAMS .................................................................................................................... 71