Hello I have a whirlpool dryer that is not heating at all.The drum will tumble but i have no heat. i checked power coming in to the dryer im geting 240. I checked continuity at the therma fuse i got a reading of zero with a beep which means it has continuity. next i checked the cycling thermo from the end tabs same result.i also check the thermo cut off same result CONTINUITY i check high limit thermo i had a reading of 9.6 that is at the heater element i also checked the element inside the case it gave a reading of 9.7 so i dont know where to go from here any help would be great. I even took the cycling thermo out and put it on a hot plate it opened and closed fine at a temp of about 200
When you checked the devices did you remove a wire from at least one side of it just to ensure you are not reading an alternate/parallel circuit path.
high limit thermo i had a reading of 9.6 that is at the heater element i also checked the element inside the case it gave a reading of 9.7 Not sure what you are doing here the high limit should be 0 ohms.
Unless you are measuring from one side of the heating element to the far side of the high limit
I assume the thermal fuse you checked was the one on the heater assy as this unit has 2 thermal fuses.
The only things left in the heater circuit is the centrifugal switch and the Timer Switch 2 contacts.
The timer contacts can be checked with the unit unplugged.
Another way to check it would be to clip one meter lead to the Black wire on Timer Switch 2 and then work your way back through the circuit.
Should be 0 ohms till the far side of the heater where it should be 9.6 ohms.
Then all that is left is the centrifugal switch.
the thermo at the top of the case read o.o cont,
the thermo at the bottom of the case read 9.6 i think that one went to the element
the thermo on the blower housing read o.o cont with a beep
the fuse i checked was on the blower housing it also gave a reading of 0.0
yes i did remove at least one or both wires while doing test i di not know this had 2 fuses
the thermo at the bottom of the case read 9.6 i think that one went to the element
All thermostats should read 0 ohms at room temperature.
If you had 9.6 then it is a problem if it is Item 15 Section 3 in the parts.
The only exception is the cycling thermostat Item 20 Section 3 (on the blower) as it has a built in heater. One set of thermostat external contacts are the heater approximately 7,000 ohms and the other external contacts are the internal contacts 0 ohms at room temperature.
hello me again
the high limit thermo is the one giving me the reading of 9.6 now thats testing across the terminals on the thermo now is it still an issue should i be getting a 0.0 read out.
also the cycling thermo "on the heater case" is giving a read out of 0.0 on the external prongs OL on the inner prongs of the thermo should i change them both thermos or are they correct . This all at room temp, I really appreciate the help also tell me were i can make a small donation for the cause it is worth every penny
once again thanx
cedric
the high limit thermo is the one giving me the reading of 9.6 now thats testing across the terminals on the thermo now is it still an issue should i be getting a 0.0 read out.
Yes, you should get 0 ohms.I would replace it
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also the cycling thermo "on the heater case" is giving a read out of 0.0 on the external prongs OL on the inner prongs of the thermo should i change them both thermos or are they correct .[/COLOR]
Not sure what OL is. Could mean that it is outside the readability of the meter. Try a higher ohms scale for instance the 20 K (kilohms) scale.
The heaters resistance (~7 Kohms) is too high to be read on a 200 ohm or a 2 Kohms scale. These are just the scales on my meter yours may differ.
I really appreciate the help also tell me were i can make a small donation for the cause it is worth every penny
Do not worry about the donation, though Roman (the fellow from AppliancePartsPro) I am sure would appreciate your order
Don’t give up so easy.
Check the timer contacts or do the circuit check from the black on the timer to the far side of the heater as I outlined earlier.
There is one way to tell for sure.
Take the two wires that go to the thermostat
Short them together
Tape them up so they cannot short to the frame
Plug the unit in and give it a try
Yes that is the one. i did a test on the thermo by itself it is reading 0.0 .I must have been crossing the terminals on that thermo to get a reading of 9.6 SORRY i checked the timer i clipped the black wire on the end of the timer i scan through i turned the timer to a cycle, i got a reading from the orange wire of 0.5, i turned the timer to another cycle i got a reading of 0.4 from the black and white wire. i checked the centrfuge switch with the dryer running i have cont betwwen the two red wires " wires 1&2 leading to the thermos i hope this helps
We are missing something that is very simple here but I am having difficulty trying to figure out what it is.
Your earlier measurement from timer black does not really make any difference. The only set of timer contacts that have an impact on getting heat are TIMER SWITCH 2 (Red to Black), lower left hand side of the wiring diagram.
This is a long shot but recheck that you are getting 240 volts.
If OK
Unplug the unit, put it in timed dry, high heat, 50 minutes, use a low meter scale.
Tape or somehow attach one meter lead to the Black wire on the timer.
Do not move this, it stays there for all of the following
Read to the Red wire on the timer, Should be 0 ohms
If OK
Read to the upper thermostat on the heater (Cutoff), both sides should read 0 ohms.
If OK
Read to the outer contacts of the thermostat on the blower (Operating), both sides should read 0 ohms.
If OK
Read to the lower thermostat on the heater (Hi Limit), both sides should read 0
If OK
Read to the heater contacts, one should be 0 ohm, the other should be 8 to 9 ohms
If OK
I am totally stumped now!!!
Because you have read the entire circuit path except the centrifugal switch which you have already checked.
After checking the timer i have no reading at the timer at all,timer was set in timed dry 50 min i got no reading at the red and black wire lower left hand corner, "right above the red wire on the timer" , dryer was unplugged