Amana & Goodman HVAC Manuals, Parts Lists, Wiring Watch out: this is an unsafe heater that should be left OFF pending repair. 6 Flashes: Reversed polarity (some models) Check power supply wiring vs wiring diagram: 7 Flashes: Low flame or weak flame sensor signal: Check gas supply pressure vs data plate pressure . Check / replace dirty corroded flame sensor probe Piper AZTEC PA-23-250 Manuals | ManualsLib Fuel System Diagram (2 Valves) 692. Fuel System Diagram. 698. Fuel Cells. 698. Heater Terminal Block Wiring Test. 1067. Installation of Heater. 1068. Heater Installation (PA-23-235 and PA-23-250) Installation of Janitrol Heater. 1115. Electrical Continuity Check. 1115. Heater Electrical System Checks. Problem: Your fan on your furnace runs all the time and will not Aug 30, 2012Problem: Fan on your furnace runs all the time and will not shut off. Solution:. 1. Check to make sure the fan is not in the fan “ON” position on your thermostat. 2. If your furnace goes off on high limit or if one of the rollout switches are open then the furnace fan will run all the time because the furnace control board is telling the furnace that the furnace has over-heated genealogicamente email protected]