Frigidaire Affinity AEQ8000FSO not drying heating clothes

[Jkingsley7]

I have a dryer that is running but not producing heat. When I run the diagnostics the code that appears is E5b or E56.  I have replaced the thermistor by the blower housing. I also have taken out the thermal fuse, the heating coil, and the high limit fuse and brought them to a local appliance parts warehouse who put them on a multimeter and said they were all set. So the only thing I replaced was the thermistor it ran great for A few loads over the next few days  like a new dryer.  Then all of a sudden it stopped drying and now it starts a cycle normally taking and will start withled timer then after a while the LEDs start chasing each other then the dryer stops and the 3 lights are blinking next to the start button and I have no heat again. So please help me out.  I did purchase the heating coils but haven't installed them applywt cause when I originally went to appliance place they said they were old but fine when put multimeter on it.  Please any assistance is awesome.  The code again is E5b or E56 

It is is a frigidaire affinity model number aeq8000fso

 

Thanks k you 

John 

[Jkingsley7]

Anyone help me out please 

Thanks 

[16345Ed]

Heater Fault

Temperature reading of control thermistor has not changed in a certain amount of time. 

Position cycle selector to NORMAL, temperature selector to HIGH HEAT and touch START. Measure voltage across terminals on relay RL2 (heater relay) on electronic control. If meter reads 240V on electric models and 120V on gas models, replace electronic control. If meter reads zero, remove power from dryer. Disconnect wire going to NO terminal on the relay RL2. Reconnect power and measure voltage drop between terminal COM on relay RL2 and neutral. If meter reads zero, wire between incoming line and relay RL2 is open. If meter reads 120V, check the rest of the heater circuit. 

[16345Ed]

Btw. There is a switch in the motor that needs to close as well. M1 and M2 should have continually when you manually close the switch. 

If all this is too much for you I suggest you call a technician. 

[Jkingsley7]

16345Ed

I Appreciate your response. DO you have any idea of what it could be though please the high limit fuse or the other fuse.  THe dryer will run for a few minutes after starting with no heat tumbles and then after a few minutes all 3 leds next to the start button blink and it doesnt run it shuts off at that point

thank you so much

JOhn

[16345Ed]

Have you tried disconnecting exhaust duct and running it?  Maybe clogged vent?? 

[Jkingsley7]

Thank you when I disconnected all the elements I thoroughly cleaned the dryer from to top to bottom I will double check though thank you

 

Should I replace heating element I am trying not to replace it if I don't have too do you know what the three blinking LEDs mean next to the start button when it stops that is what is blinking 

 

[16345Ed]

The exhaust vent... is it throughly clean? I'm talking about ductwork to outside. 

[16345Ed]

How many LEDS are there?

 

if all are flashing it could be in diagnostic mode. 

[Jkingsley7]

3 small round lights right above the  start button below the led read out (where the timer) is 

[Jkingsley7]

Ductwork is spotless little bits here and there but nothing impeding the flow of air at all 

[Jkingsley7]

I ended up replacing the heating coil and the fuse that comes with it and it has been working fine

thank you very much

 

[darren412]

Since the unit is operating as you mentioned  after changing the high limit thermostat you may possibly of had a faulty high limit thermostat  and it was shutting off the heat source then giving you the bad thermistor reading error code E5B . If the unit shuts down again check the wire harness  for the thermistor  wiring and make sure the wiring going from the thermistor to the main control board are good. Since you have replaced The thermistor and the wiring is good  then the control board may be the issue at that point.  Plugging in and unplugging  the power to the unit while your working on this dryer may be why its working again possibly each time you put things back together.  It may be rebooting the control board and resetting a faulty relay in the board till it malfunctions again at some point and then your back to square one scratching your head why its not working.  An intermittent issue can be challenging to diagnose. Unless it totally stays dead during the diagnosis process.   hopefully its the high limit thermostat you changed that was faulty.   These Frigidaire Affinity model dryers have had a lot of bad control board issues and upgraded boards to them. If your problem still persists and it is intermittently heating off and on again and everything has checked out good that I mentioned.  I would tend to say your problem lies within the control board and that would need replacing.

[darren412]

BTW    The thermistor around room temp should be reading about 50K ohms ( + or - 10%)

[Jkingsley7]

Darren412

okay it has been working great for the last two weeks and all of a sudden today it ran for about 10-12 minutes then the I get blinking lights above the power button and the dryer shuts off.  

 

and then when I do a diagnostics it shows up as e5b

I can restart it and then it runs for about 10-12 minutes then shuts off again with blinking lights

 

help I really don’t have the money for a new dryer but after spending 180 dollars in parts

 

ughhhh

i replaces the heating element with a fuse on it then I also replaced the thermoostir also

i did have a wire I had to splice a few years ago should I look at that