Carrier 58ssc Repair Manual or Schematic

Is there a repair manual available so I can trouble shoot my furnace? Be nice to know what readings I should have at the various test points. The gas appears to come on, but no ignition from the sparking device. Schematic on service door shows Hot Surface Ignitor (110vac at TP4) but I don't have a HSI. I doubt 110vac would be sufficient to spark off the gas. I expect there is a high voltage xfmr somewhere on the circuit board, possibly on the auxilary board that is in the area of TP4 the HSI relay. A schematic of the circuit board would be MOST useful. The manual for your furnace is here: http://www.xpedio.carrier.com/idc/gr...t/58ss-1si.pdf I presume you have a Carrier three wire pilot intermittent ignition system. You should have three wires coming from the pilot burner to a white plug, with the wires being green, yellow and white. Page 5 of the manual describes the sequence of operation of the furnace --- you need to follow that and decide how far the furnace gets before it goes no further. What do you mean when you say the gas appears to come on? Briefly, when the thermostat is turned up, the inducer motor should turn on and spool up. When the pressure switch closes, the gas to the pilot burner and the spark to light the pilot burner should turn on.

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