Introdução
If a Roper dryer runs but won’t heat, a failed heating element or a failed heat sensor can stop it from drying clothes. This repair shows how to replace the heating element and common heat-related sensors, including the thermal cutoff (high-limit thermostat), heater thermostat, thermal fuse, and cycling thermostat, to restore normal heating.
Ferramentas
Peças
-
-
Use a 1/4 inch nut driver or socket to remove the nine to 10 screws securing the rear panel.
-
Pull the sheet metal rear panel straight off the dryer.
-
-
-
Confirm the replacement heating element matches the lint filter style used by the dryer.
-
Take a clear photo of every wire connection on the heater housing and thermostats before disconnecting anything.
-
-
-
Use a 1/4 inch nut driver to remove the two screws securing the heating element canister, one screw on each side.
-
Roll the bottom of the canister outward, then slide the canister downward to remove it.
-
-
-
Insert the new canister at an angle, roll it into place, and push it upward until it seats in the housing.
-
Reinstall the two 1/4 inch screws that secure the canister to the dryer.
-
-
-
Match the wire orientation on the thermal cutoff or high-limit thermostat, and move the wires to the new part one at a time.
-
Remove the mounting screw or screws holding the thermal cutoff in place, and remove the old part.
-
Install the new thermal cutoff, secure it with the same hardware, and verify the terminals match the original wiring layout.
-
-
-
Identify each wire on the heater thermostat, including any small “moderator” wire, and take a photo if needed.
-
Disconnect the wires from the old heater thermostat, and park them where they won’t fall back into the cabinet.
-
Remove any separate red jumper wire if the replacement thermostat has a welded metal jumper built in.
-
Use a screwdriver or 1/4 inch nut driver to remove the two screws holding the old thermostat, and remove the thermostat.
-
-
-
Fit the new thermostat so its brass tab sits flush over the heating element housing.
-
Secure the thermostat using the correct mounting method for the part and housing, then make sure it sits flush against the housing.
-
Reconnect the wires to the same terminals as before, including the small “moderator” wire on the small terminal.
-
Crimp the small metal retaining piece on the element housing upward as much as possible so the thermostat stays tight and flush.
-
-
-
Locate the thermal fuse and move the two wire terminals to the new thermal fuse before removing the old one.
-
Use a 1/4 inch nut driver to remove the screw holding the old thermal fuse, and remove the fuse.
-
Insert the new thermal fuse into place, press it down slightly to seat the lip, and reinstall the screw.
-
-
-
Take a photo of the cycling thermostat wires, then match them exactly on the new thermostat.
-
Move the wires from the old cycling thermostat to the new one one at a time so you don’t mix them up.
-
Use a screwdriver to remove the screw holding the old cycling thermostat, and remove the thermostat.
-
Fit one side of the new cycling thermostat into the metal housing, swing it into position, and secure it with the screw.
-
-
-
Reinstall the rear panel and secure it with the nine to 10 1/4 inch screws around the perimeter.
-
Restore power, run a timed heat cycle, and verify the dryer heats normally.
-
If the dryer heats again, keep it that way by maintaining strong airflow through the lint filter and vent system. If the dryer still has no heat after reassembly, focus troubleshooting on wiring orientation, loose terminals, and vent restriction, since all of those can prevent proper heating even with new parts installed.