|View single post by morangie18|
|Posted: Tue Jun 3rd, 2008 01:45 am||
|Sincere apologies to rmfritchey and everyone else. Not too experienced at the web forum thing. Wasn't trying to hijack the thread...
Problem: Dryer turns on fine with various settings but there's no heat. Fumbled around a lot learning how to get access to the various dryer parts. Mostly succeeded.
1) Started troubleshooting with 240V supply connecitons. Supply and connections test good.
2) Swapped motor and heater relays in the topside rear control panel. Determined that heater relay in the motor position requires the PTS button to be depressed all the time to keep the motor going. Still no heat though with the good motor relay in the heater circuit. Swapped back and all was as before. So I think I have a bad heater relay and something else is still bad.
3) Disconnected wires from heater. Continuity test showed 10ohms. No short to chassis/neutral.
4) Reconnected wires to heater, disconnected wires to high limit thermostat. Continuity check showed very low resistance....not open. So I'm assuming it's good for now.
5) Reconnected wires to thermostat and disconnected wires to thermal cut-off. Continuity check measures a short, so thermal cut-off assumed to be good.
6) Reconnected thermal cut-off wires and disconnected thermistor. Thermistor reads good (~10K @ ~75deg.F).
7) Thermal fuse not in question since motor works.
8) Centrifugal swtich...found wires going to the two terminal block locaitons, 1M & 2M, and it measures open across those terminal with the dryer off. Tech sheet says to push the actuator to change the switch state to and even provides a very nice illustration...problem is I can't find anything that looks like that illustartion.
I've removed the 'exhaust pipe' and the duct piece that the lint trap hangs down into, so that it's just the squirrel cage fan (and it's duct/housing) in front of the motor. That doesn't seem to want to come off the shaft. Pretty tough to see or reach around it to the motor itself. Anyone know if I'm looking in the wrong place for this thing? Can I test the heater circuit portion of the centrifugal switch some other way since I can't seem to locate the actuator?
Assuming that get's figured out...if it's not the centrifugal switch then the tech sheet jumps to the control board as the remaining culprit...if anyone sees anything wrong or overlooked in what I did, I'd appreciate a heads-up.
Last edited on Tue Jun 3rd, 2008 01:54 am by morangie18
The problem with being efficient is that it usually takes longer.