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Justin
Justin, Appliance Technician
Category: Appliance
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Experience:  Owner of Shaffer's Appliance Service
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I have a kenmore dryer I replaced the hi limit trip which was

Resolved Question:

I have a kenmore dryer I replaced the hi limit trip which was blown. I run the dryer and then I see the burners ignite but it goes out within a minute. I also replaced the cycling thermostat, but no change. should the thermostat be open or closed across the 2 terminals?
Submitted: 2 years ago.
Category: Appliance
Expert:  Justin replied 2 years ago.
Hello, I'll be happy to help, but I'll require your model number first to proceed. It should be located on a tag seen by opening the door. Thanks.
Customer: replied 2 years ago.
m#11072212101 what about the cycling thermostat should both sets of terminals be open or closed?
Expert:  Justin replied 2 years ago.

Let's ensure you're talking about the correct part. The cycling thermostat is on the BLOWER HOUSING beside the THERMAL FUSE. The Heater thermostat is at the bottom of the heater housing. In either case, both thermostats should be a CLOSED circuit. The operating thermostat will have FOUR wires. The two smaller terminals will read a few thousand ohms. The 1/4" terminals should be a closed circuit.

If your heat is cycling off too quickly, and since you had a blown thermal cutoff, I'd tell you to ENSURE your exhaust is clear and not pinched, blocked or restricted in any way. Also, make sure it's not too long with too many bends and or elbows. The hi limit stats don't generally blow unless there is an exhaust problem. Take the exhaust hose off the back of the dryer, turn the dryer on and feel the air flow. Reinstall the hose, turn the dryer on, walk outside to feel the air. Compare the flow. They should be very close in velocity.

Customer: replied 2 years ago.
I intially by-passed the cut off til it came in. which had it working fine. the exhaust is free and clear. that isn't the problem. When i look in the back. the cycling thermostat has 4 wires on it 2 small and 2 large, correct? What are the other thermostat looking things that are linked together by a jumper wire could the be the problem?
Expert:  Justin replied 2 years ago.

The cycling t hemostat has two small and two larger terminals yes. Pulling off the larger terminals and measuring across, you should have a short circuit. Pulling off the smaller wires, you should read several thousand ohms.

The other thermostat things? The thermal fuse beside the cycling thermostat is obviously good, otherwise it wouldn't heat. The thermostat on the heater with the jumpers to the other one should have been replaced with the thermal cutoff. They are sold together in a kit. You NEVER replace one without the other. You should have purchased part 280010 which includes both.

I can tell you that the heat will cycle on and off. Does the heat ever come back on after it initially goes off?

Customer: replied 2 years ago.

no I let it run on timed hi heat for 20 minutes but it never came back on. I ordered the cut off online but the manual didn't say anything about changing anything else. So are you saying i should change the 2 thermostats that are linked by a jumper wire too?

Expert:  Justin replied 2 years ago.

Does the ignitor ever come back on but not ignite gas? I think we're getting off track here. Let me understand, you said you replaced the hi limit and cycling thermostat. Do you mean you replaced the thermostat with the four wires and the thermal FUSE? The fuse sits beside the cycling thermostat. When you said hi limit, I was assuming you meant the hi limit on the heater housing (the lower thermostat attached with the jumper is the hi limit, the one above it is the thermal cut off)

Expert:  Justin replied 2 years ago.
What I want you to do is this. I want you to pry off the square plastic piece from the front panel below the door. Start your dryer on a timed dry. Walk away for 10 minutes or so. Come back, peek in that hole and watch. Watch for a few things. Number one, it is important you can spare 10 - 20 minutes to do this properly. IF the ignitor ever glows, then goes out with no gas ignition, I'll need to know this. If the flame comes on, then goes out almost immediately, I'll need to know this. If the ignitor NEVER comes back on, I'll need to know this as well. You must allot yourself some time to peek through that little window. Get yourself a little pillow and let me know exactly what it does.
Customer: replied 2 years ago.

1. initial start up gas ignites and runs a bit. then cycles off 2. ignitor comes on in intervals but the gas never ignites. over a 10 -15 min period. so no gas?

Expert:  replied 2 years ago.
Great. If this is occurring it means you need a set of gas coils. In other words, of the initial light up is fine, then the next time ( or third or fifth) you see the ignitor glow with no ignition of gas, your coils are most definitely bad. The part number is XXXXX and you can order it by calling(NNN) NNN-NNNN $20 or so for the part kit.
Justin, Appliance Technician
Category: Appliance
Satisfied Customers: 828
Experience: Owner of Shaffer's Appliance Service
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