Question about Bosch Dryers
Purchased new Bosch heater unit ( which includes thermostats) and after fitting, dryer spins but does not heat. Is there another sensor or thermostat that may be at fault?
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Posted on Jan 02, 2017
I think on your machine the lower thermostat connected to one terminal of the element, you have a wire coming from the thermal cut off down to the top terminal of the lower thermostat, a wire from the lower thermostat to the timer, and a wire going to the other terminal of the element.
You probably have the wire from the cut-off correct as it won't reach the other terminals. You have crossed the other 2 wires. This caused 240V to short across the lower thermostat and burned it out.
You will need a new Hi-limit thermostat, which will include the upper cut-off as well. They come as a set part# 279816. This will be a little different because the new hi-limit will not connect directly to the element. There will be all the wire ends and instructions with it that you need to get it hooked up correctly.
There should be a wiring diagram inside the console of the dryer that shows which wires go where, but I am sure you have crossed the 2 wires below the hi-limit switch.
Post back if you need any help.
Posted on Dec 02, 2007
believe that model has a relay under console..pull console end caps off remove screw on each end roll console back..if your model has an electronic bd it also has a heat relay it will be the one with 2 large red wires.. a quick ck would be to unplug power remove the red wires and tape bear ends together pug back up turn on dryer if it heats unplug and exchange the 2 relays the one with the blue wires is the motor relay and is same as heat relay try again if motor fails to start bad relay if motor starts bad control bd
Posted on Aug 10, 2008
The top has a hinge bracket in the back. pop the front up with a flat screw driver. you should see the heating element there and be able to access it from that point.
Posted on Aug 21, 2008
If the dryer isn't heating, check for a blown thermal fuse or a faulty heating element. Both components can be tested using a multimeter or ohmmeter. Check for continuity. A lack of continuity indicates a faulty component. Both components are located in the rear of the dryer. The thermal fuse is about an inch long and is usually attached to or near the exhaust duct. Hope this helped and best wishes.
Posted on Sep 12, 2009
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