CIRCUIT BOARDS

ELECTRICAL ITEMS AND CONTROLS ARE FACTORY TESTED AND ARE NOT RETURNABLE

The control circuit of a furnace manages a variety of data produced by the thermostat, the sensors near the burners, the ignition system and the blower mechanism. It is in charge of starting up components in the correct order and then shutting them down properly when the furnace finishes its job. A control circuit can fail in several key ways, requiring require a replacement of the board or nearby components to keep the furnace operating correctly.

One sign that the circuit control board has failed is a lack of any type of response. For example, the thermostat is sending signals to the circuit board, but wires have lost the connection or the panel itself had burned out. If you have an ohmmeter, you can test the wiring running to and from the circuit control board to see if the wiring is at fault or if the problem lies within the circuitry itself. Replacing a few wires can be less expensive than installing an entirely new panel.


Circuit boards also includes a timer that controls the furnace blower after the burner or element has been lit. The timer itself can fail and lead to a properly operating burner but the blower fails to turn on. The relay switches and pressure switches that the furnace uses to open and close separate circuits can also fail, causing the timer to work but never send signals elsewhere. When the internal timer fails, you may need to replace the entire control board to fix the problem.


Thermistors and thermocouples send signals to the control board indicating the heat levels of the pilot light and burners. This helps the control board switch on its timer, shut down the furnace if temperatures are excessive and start the primary burner. These sensors can become loose or may have failed.

Consulting an HVAC professional to take a look at your furnace may be the best alternative and not save you the effort but also get the job completed quickly and safely. Modern furnaces have diagnostic indicators that show a series of lights. The pattern indicates particular problems. Charts are built into control panels or are available in manuals for more detailed looks. You may try to reset your furnace entirely to see if a diagnostic error is preventing the system from working.


 
1 - 40 of 40 items
GMC 0130F00275S GMC 0130F00280S GMC 201300730954
GMC 0130F00275S MEMORY CHIPGMC 0130F00280S MEMORY CHIPGMC 201300730954 PROGRAM CHIP

$18.95

$18.95

$1.30

GMC 201330790044 GMC 2133259020 GMC 201332590022
GMC 201330790044 DISPLAY BOARDGMC 201332590020 CONTROL BOARDGMC 201332590022 DISPLAY BOARD ASSEMBLY

$29.95

$31.95

$23.95

GMC 201332890002 GMC 201333090011 GMC 201333090659
GMC 201332890002 CONTROL BOARDGMC 201333090011 MAIN CONTROL BOARDGMC 201333090659 MAIN CONTROL BOARD

$104.95

$62.95

$89.95

GMC 201337590001 GMC 201337790044 GMC 201337990050
GMC 201337590001 CONTROL BOARDGMC 201337790044 MAIN CONTROL BOARDGMC 201337990050 CONTROL BOARD

$164.95

$349.95

$50.95

GMC 201338090050 GMC 203337990161 GMC 203338090308
GMC 201338090050 MAIN CONTROL BOARD ASSEMBLYGMC 203337990161 TERMINAL BOARD ASSEMBLYGMC 203338090308 ELECTRONIC CONTROL BOX ASSEMBLY

$279.95

$29.95

$369.95

GMC B1809911S GMC DFBK01 GMC PCBAG127S
GMC B1809911S CONTROL BOARDGMC DFBK01 DEFROST CONTROL BOARDGMC PCBAG127S PRINTED CONTROL BOARD (DSI, 2 STAGE)

$199.95

$89.95

$134.95

GMC PCBBF137S GMC PCBBF140S GMC PCBDM101S
GMC PCBBF137S PCB IGNITION HSI INTEGRATED CONTROL BOARDGMC PCBBF140S CONTROL BOARDGMC PCBDM101S / PCBDM130S DEFROST CONTROL BOARD W/ RELAY

$84.95

$64.95

$29.95

GMC PCBDM133S GMC PCBEM102S GMC PCBGR103S PCB DUAL STAGE CONTROL MODULE
GMC PCBDM133S DEFROST CONTROL BOARDGMC PCBEM102S ECM PRIMARY BOARDGMC PCBGR103S PCB DUAL STAGE CONTROL MODULE

$29.95

$28.95

$224.95

GMC PCBHR104S GMC PCBJA103S GMC PCBKF202SF
GMC PCBHR104S PCB CONTROL BOARDGMC PCBJA103S / PCBJA101S PRINTED CONTROL BOARD GMC PCBKF202SF FURNACE CONTROL BOARD

$269.95

$134.95

$429.95

GMC RF000129 GMC 201337590002 GMC PCBBF132S
GMC RF000129 IGNITION BOARD, HSI INTEGRATED GMC 201337590002 CONTROL BOARDGMC PCBBF132S CONTROL BOARD

$98.95

$124.95

$59.95

GMC B1809923 GMC PCBBF112S GMC PCBAG123S
GMC B1809923 PRINTED CONTROL BOARD GMC PCBBF112S / PCBBF123S CONTROL BOARDGMC PCBAG123S PRINTED CONTROL BOARD

$132.95

$56.95

$84.95

GMC PCBFM103S GMC B1809913S GMC PCBBF107S
GMC PCBFM103S / PCBFM131S TIME DELAY RELAY BOARDGMC B1809913S CONTROL BOARDGMC PCBBF107S / PCBBF106S CONTROL BOARD

$24.95

$89.95

$129.95

GMC PCBAM104S GMC B1809904S GMC PCBAM105S
GMC PCBAM104S DSI IGNITION CONTROL BOARD GMC B1809904S BLOWER CONTROL BOARDGMC PCBAM105S DSI AUX CONTROL BOARD

$98.95

$119.95

$52.95

GMC PCBKF105S
GMC PCBKF105S / 102S/ 103S CONTROL BOARD

$162.95

<!-- Start Quantcast Tag -->

<script tRead more: http://www.ehow.com/info_12192836_failure-furnace-blower-control-circuit-board.htmlype="text/javascript">

var _qevents = _qevents || [];

 

(function() {

var elem = document.createElement('script');

elem.src = (document.location.protocol == "https:" ? "https://secure" : "http://edge") + ".quantserve.com/quant.js";

elem.async = true;

elem.type = "text/javascript";

var scpt = document.getElementsByTagName('script')[0];

scpt.parentNode.insertBefore(elem, scpt);

})();

 

_qevents.push(

{qacct:"p-58DTUnWQ7BY1L",labels:"_fp.event.Circuit Boards"}

);

</script>

<noscript>

<img src="//pixel.quantserve.com/pixel/p-58DTUnWQ7BY1L.gif?labels=_fp.event.Circuit+Boards" style="display: none;" border="0" height="1" width="1" alt="Quantcast"/>

</noscript>

<!-- End Quantcast tag -->