Huebsch JTD32DG Dryer Won’t Start

[Ben Cheek]

Operations reported the Huebsch JTD32DG Dryer wouldn’t start. Investigation revealed the unit had power and quarters could be used to add time to the controller, but when start is pushed, although the controller counts down the time as if its running, the tumbler doesn’t turn and the burner doesn’t ignite.

When browsing the documentation in the Maintenance office paper file, I noticed the “Preventative Maintenance” section recommended regular removal of lint from the machine by dis-assembly of the unit’s panels. I had noticed when examining the machine initially a build op of lint behind the drum, so I decided to perform this maintenance. I ended up removing 2-1/2 tall kitchen bags of lint (plus some rat poop).

Tools Required for Lint Removal Disassembly:
Phillips driver (front panel)
T-15 driver (side panels)
5/16″ driver/ratchet (braces, ducts, and guards)
5/16″ wrench (braces, ducts, and guards)
adjustable wrench (for door removal)

I attempted to test the machine while the panels were off, but I kept getting the “Door Open” error on the controller. Turns out there are three switches that sense open/missing doors, panels, and components: (1) the front door switch, (2) the lint collector switch, (3) the motor guard panel switch. I missed this last one until the end.

Once cleaned out, I re-assembled the unit with same symptoms. Currently, I’m working with the wiring diagram (found in the paper file) to attempt to isolate the issue. Since the controller seems to be working normally, I’m focusing on the motor. It seems to me that the motor runs first and the sends a signal through the safety switches, which in turn allow the igniter to fire the unit up. If for some reason the motor fails, of course the tumbler won’t turn and nothing else will happen. I’m going to attempt to swap motors with the top unit to test this theory.

• This topic was modified 4 months, 1 week ago by Ben Cheek.

[Ben Cheek]

Swap tested the following components:

– motor
– cabinet hi-limit
– stove hi-limit

Did not correct the problem. Tested for voltage at motor terminals — no voltage. Tested for continuity at:

– cabinet hi-limit
– stove hi-limit
– air-flow switch
– thermostat

All showed good continuity.

This leaves me to suspect the controller is bad. Will look for economical replacement.

[Ben Cheek]

Ordered #D501848 Alliance/SpeedQueen Dryer Control Board (used) from eBay $145.00. This corresponds to the “RSPC P/N: 501848” printed on the paper label affixed to the metal circuit board holder of the old unit.

[Ben Cheek]

Replacing controller did not correct the issue. New controller is still installed in the unit. Good old controller is in dismantled top unit.

I think I’ll have to go back to tracing where current is going on connections. I did notice charing or blackening on one or two of the lines on the main control connector. Might be a good place to start. A new/cleaned wiring harness might be necessary. Also, I need to check if the ignition unit could interrupt tumbling. Several are lying around indicating this part may have been a problem in the past.

• This reply was modified 4 months ago by Ben Cheek. Reason: Typos

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