The dimmer isn't a straight resistor, its an R-C timing circuit, and the caps within that circuit are going to mess up any resistance measurement you're trying to make. The R-C circuit is there as a timing mechanism to determinine the duty cycle on/off time of the dimmer. It is because of that, that I recommend you try to not use a light-dimmer for a soldering iron - the dimmers are not resistive rheostats, they're light switches (on and off @ 120-times a second). Depending upon the nature of the soldering iron, that may cause some harmful problems.
* STATOR
(1) Measure the insulation resistance between
BLUE lead and the core.
(2) Measure the insulation resistance between
WHITE lead and the core.
(3) Measure the insulation resistance between
YELLOW lead and the core.
(4) Measure the insulation resistance between
BROWN lead and the core.
AC Winding
White / Red = 0.2 Ohm
Black / Blue = 0.25 Ohm
Condensor Winding
Yellow / Yellow = 0.58 Ohm
* ROTOR
Measure the insulation across one of the soldered
terminals of the rotor and the core
Then test across the 2 soldered terminals of the rotor.
Resistance = 1.75 Ohm
NOTE 1 :
Because a diode is soldered to the coil ends at
the terminals, resistance may be measured only
when tester probes touche the terminals in one
combination of polarity. Therefore, if no resistance
reading appears, try checking in reverse polarity.
Diode rectifier test (Lovated between the 2 capacitors)
Orange wire should read to all of the other terminals.
Both Brown wires should read to the Brown White wire (Note polarity)
Those are pretty much the checks that you can do and should reveal where the problem lies.
I think you may have a burned wire / terminal somewhere inside the control panel.
Usually when they just stop working the failures are
1. The rotor (Bad and horribly expensive news)
2. Capacitor wires (Yellow) open
3. Stator wires damaged.
The stators on these units do not usually fail.
All manuals for this unit can be found here (Owner's / parts / Service)
http://www.robinamerica.com/productsupport.aspx?pid=28
If the link doesn't work use:
http://www.robinamerica.com Choose Power products and then customer support. Manuals.
This should give you something to work with. Thanks for choosing FixYa,
Kelly
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