Control board installation procedures are described in detail in these instructions. control board synonyms, control board pronunciation, control board translation, English dictionary definition of control board. If you know of something we missed please email us. : The total connected load depends on the electrical devices that are actually connected to the circuits and how often these items are being used. The replacement board was a "Universal" So it was not the same as the original. Defrost Control Board Trane American Standard CNT04364. I know it is mounted on 4 plastic stands, but sometimes the board can come in contact with the metal mounting plate. If it did touch the metal, the whole unit shouldn't catch on fire. I got the part number off of the board and typed it into Amazon search. With the exception of the mounting points, this board seems to be an exact replica of the Honeywell ST9120C4057 control board that was in my furnace. High Performance HVAC is certain there are more terms and acronyms. Carrier Bryant Furnace Control Board Upgrade Kit 325878-751. I removed the control board and found that the fan relay had burnt out. The modern furnace is a marvel of technology, especially when compared to the furnaces of yore, which were basically large ovens with pipes hooked up to them. How do I figure total amps in the panel box? Identify YOUR Circuit Board. $178.95. Heatcraft Defrost Timer 21340101. Pages 3 through 5 are procedures for programming the control board and the diagnostic codes for the control board. Carrier Bryant Control Board HK38EA004. The new board only has 1 and it just states XFMR. 1, transfer the following quick-connect wiring points from the old board to the new board: “XFMR-R”, “XFMR-C”, “C”. the heater kit and reconnect it directly to the new board. TRANFER QUICK-CONNECT WIRING POINTS: As shown in Fig. Important note: G Flow Monitor (flow switch connector) H P Transformer Input (120VAC X 2) with a *G7 control board (PN 624690), install all wires from the door switch and 24V transformer on the same pin locations they were removed from. This added to the confusion when the instructions and drawing had sockets that didn't match ours :blink: and we couldn't get the burners to come on. $50.11. Failure to do so may result in control board damage. $248.12. HVAC Definitions Terms & Acronyms | Heating Cooling - This is a comprehensive list of HVAC Definitions Terms & Acronyms. 5. ProLogic: Main PCB Layout A I Remote DSP comm (RS485 – 10VDC) B Temp sensor terminal block (5VDC) C Heater 1&2 terminal block (dry contacts) D Valves 1-4 & 4Amp fuse ( 24VAC) E Cell Plug for chlorination F High Voltage Relays (top – Filter, Lights, AUX1, AUX2; bottom (AUX 3-6). Good. There are scores of different Furnace, Air Handler and Heat Pump Boards. Disconnect and remove the piggyback Define control board. I get 5 red flashes on my control board indicating open role out? Carrier HK42FZ027 Furnace Control Circuit Board HK42FZ027. Also on the old board there is a XFMR-H (black) connection AND a XFMR-N (white). It might ground out the control board and cause it to get hot, start smoking, or the board catch on fire, but unit itself wouldn't catch on fire. Some are called Fan Timers, others Control Boards, Defrost Controls, Defrost Timers, Circuit Boards, Logic Boards and probably as many other names again, depending on the equipment or board manufacturers terminology! what does that really mean? Read and follow these instructions carefully before replacing the control board. $179.12. Contemporary furnaces have most of their operations linked into a furnace control board, which is the core of how the furnace works. I also had to purchase a "flame ignitor sensor upgrade kit", because of the date of the furnace. $175.12. 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