Instruction/ maintenance manual of the product 50A55 Emerson
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INTEGRA TED FURNA CE CONTROL MODULE TROUBLESHOO TING GUIDE 50A55 INTEGRA TED FURNACE CONTR OL MODULE QualiedServiceman’s T roubleshootingGuide TROUBLESHOO TING PROCEDURE Ifthelightonthemoduleisoncontinuously ,thefaultislikelytobeinternaltothe module.
Place thermostat fan s witch in the ON position. Return fa n switch to AU TO position. Indoor Blo we r Check Does indoor bl ow er r un at HEA T speed? YES YES NO NO YES NO YES NO YES NO Indoor blo wer fault.
INTEGRA TED FURNA CE CONTROL MODULE TROUBLESHOO TING GUIDE Place thermostat system switch in cooling mode and fa n switch in AU TO position. Lo we r temperature selection lev er to call for a cooling cycle . R & Y contacts close. Return ther mostat to desired setting.
Inducer Draft Motor and Pressure Switch Check Is induced draft motor energized? YES YES NO Is diagnostic LED flashing 3 times? Call for heat. Thermostat contacts R & W close. Jumper pressure switch. Disconnect electric po we r at fuse or circuit breaker .
Main Burner Ignition Check. Inducer ON. Does ignitor wa rm up and glow? YES YES NO NO Does bu r ner ignite? Tu rn power OFF to furnace. Unplug ignitor from wire harness . Connect voltmeter across ignitor wiring harness leads from control. Energize system.
Flame Sensor Check Does main bu r ner remain lit? YES NO YES NO Is bl ow er at heat speed within 1 minute of bu r ner ignition? Does ignitor remain energized with flame present? De-energize system. Disconnect 12-pin connector . Connect ohmmeter from flame sensor pin FP to bu r ner GROUND .
An important point after buying a device Emerson 50A55 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Emerson 50A55 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Emerson 50A55 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Emerson 50A55 you will learn all the available features of the product, as well as information on its operation. The information that you get Emerson 50A55 will certainly help you make a decision on the purchase.
If you already are a holder of Emerson 50A55, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Emerson 50A55.
However, one of the most important roles played by the user manual is to help in solving problems with Emerson 50A55. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Emerson 50A55 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
