Hi, You cannot look at an a-coil and determine if it is clean or not. Need to test airflow across filter and across a-coil. Ensure you are getting proper cfm through the furnace and across the element coils. Also, those sequencers work on a timing pattern and you will not always have all elements on...

Hi,

Test ignitor leads for 120vac with a call for heat whenever the ignitor should be energized.


Thanks,
Robert

Hi,

Manuals and wiring diagrams link :

http://www.hvacmanuals.com/



If you have any problems ordering or registering, call Mark @ 605-229-2627.



Thanks,
Robert

Hi, When it was installed, did it come set up for a/c ? Did it have two door panels ? Solid bottom door in front of furnace and a louvered upper door ? If so, the a-coil sit atop the furnace and the return air comes in through the upper louvered door. If not and you have an open top furnace with a f...

Hi Dave,

You're very welcome, happy to help.


Take care and best wishes,
Robert

Hi,

Yes, red wire to SEC on board.


Thanks,
Robert

HI,

Four Flashes is a limit switch cycling. You will need to first determine which limit is kicking out and then determine why.

Make sure the filter, blower motor and wheel and a/c a-coil if you have a/c are all clean so as to not restrict airflow through furnace chamber.



Thanks,
Robert

Hi,


Make sure all wires are tight and not loose. If so, that is often due to a bad fan switch.



Fan Switch # 7975 - 3281 can be seen and ordered here by paging down :

http://www.aberdeenhomerepair.com/store ... -7975-3281



Thanks,
Robert

Hi,

Get out the volt meter and it'll skeer them furnaces every time,LOL. You're right, can't test or repair what is not broken at the time.


Holler when she hiccups again.



Thanks,
Robert

Hi,

What is furnace model number ?


Is your furnace a downflow with floor supply registers throughout the home ?



Thanks,
Robert

Hi,

The blower motor and elements are controlled by sequencers.


Sequencer # 01 - 0842 can be seen and ordered here by paging down :


http://www.aberdeenhomerepair.com/store ... 8621678%29

Could be a bad sequencer or a bad motor.


Thanks,
Robert

Hi Jeremy,

IF you tested as stated with furnace not turning off at that time, it would lead to the problem.


Need to know what each and every test result is/was.



Thanks,
Robert

Hi Jeremy,

Yes, wall thermostat (t-stat).


Thanks,
Robert

Hi Jeremy, Look at left end of each element coil for a spade terminal on a white ceramic insulator. Take a volt meter and place one lead on the terminal and the other on an unpainted metal screw. Test for 120vac. Do this with thermostat turned OFF and furnace coils still energized as you stated. IF ...

Hi Dave,


You're very welcome, happy to help. Thanks for ordering with us.



Take care and best wishes,
Robert