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LG TROMM Dryer DLE7177RM - no heat

Jonathan Poffenroth

Premium Member
Joined
Jul 24, 2013
Messages
7
Location
Calgary, Alberta, Canada
Model Number
DLE7177RM
Brand
LG
Age
More than 10 years
LG dryer DLE7177RM

Machine runs but no heat.
Replaced Thermal Fuse (was bad) and Hi limit thermostat (was told this would be a good idea). Worked for a couple loads then thermal fuse blew again.

Have checked:
Dryer vent - completely clear all the way to outside.
Voltage - OK
Thermal fuse - Blue
Hi limit - Resistance is good, and also tested with heat.
Blower thermostat - Resistance is good, and also tested with heat.
Thermister - Resistance ok at room temp and also tested with heat.
Heating element - Resistance is ok at all terminals. Also took apart for visual inspection. Looks fine.

I'm at a loss. Any help would be appreciated. Thanks.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,465
Location
Redmond, Oregon
If the vent is clear it should not blow that fuse again. Put the dryer on AIR FLUFF/NO HEAT cycle and see if it gets hot inside the drum.

Did you buy the thermal fuse from a OEM parts place like RepairClinic?

Here's the thermal fuse for your model:
Thermal Fuse 6931EL3003D


Here's the blower thermostat for your model:
Thermostat 6931EL3002M


Jake
 

Jonathan Poffenroth

Premium Member
Joined
Jul 24, 2013
Messages
7
Location
Calgary, Alberta, Canada
Thanks for the response. I ran the dryer on air dry but there is no heat. Not sure how there can be with the thermal fuse blown.

As for the vent it is completely clear and has been clear. It is not even 6ft long and I can see all the way out to the outside.

Yes I always buy OEM parts from our local dealer.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,465
Location
Redmond, Oregon
Local dealers always have warranties on parts, go back to the local dealer tell them that thermal fuse is defective and they will give you another new one for free.

Then when you get the new thermal fuse on, Put the dryer on AIR FLUFF/NO HEAT cycle and see if it gets hot inside the drum.

Jake
 

Jonathan Poffenroth

Premium Member
Joined
Jul 24, 2013
Messages
7
Location
Calgary, Alberta, Canada
Well the thermal fuse did work when I installed it, so I don't really feel comfortable doing that. However I can buy one again if that will get us somewhere. What will that help to diagnose?

Since it is just a fuse, can I not just tape the wires together just to see if I get heat on the air fluff/no heat cycle?

Thanks.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,465
Location
Redmond, Oregon
Yes, unplug your dryer first, then use electrical tape and tape the thermal fuse wires together and see if you get heat in the AIR FLUFF/NO HEAT cycle.

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,465
Location
Redmond, Oregon
A cheap replacement of what Jonathan?

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,465
Location
Redmond, Oregon
Ok Jonathan, sounds good.

Thanks for the update!

Jake
 
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