Frigidair refrigerator # glhs268zdb2 evap fan

[OAR]

this evap fan is a new one on me,, attached is what looks like electronic board encased in black plastic....fan was not working so ohmed out.. shows open but don't want to assume is bad becouse I have a suspicion that some type of temp limit switch may be installed on attached electronics..any body know if this is the case?

[Samurai Appliance Repair Man]

Looking at your wiring diagram, it appears that fan power is supplied by the ADC board at J11. I would measure to see if you're getting voltage at J11. You may be looking for a DC voltage-- read the spec label on the fan is it will list the working voltage. Set your meter accordingly when you check for voltage at J11. If you're getting voltage, then the fan motor is bad, slam dunk. Otherwise, it's a bad ADC board.

[OAR]

I did'nt mean the adc board...the fan motor itself is odd "it" has a small board?..(not sure of this, it is totally encased in plastic)..permenatly attached to "it"..I did have power to the fan...have allready orderd replacement...but still have a sneaky suspesion that the motor with built in board has a built in temp limit switch that opens if not below a specified temp................I did'nt like the look of the frost pattern on the coils....the fan had not been running (obviously) but the coils were not froze up,, not even frosted properly....like low on refrigerant but not quite the same...but dismissed this becouse home owner had allready been playing in it....

[OAR]

perhaps it had just come out of defrost cycle? dono

[Samurai Appliance Repair Man]

[user=8993]OAR[/user] wrote:

I did'nt mean the adc board...the fan motor itself is odd "it" has a small board?..(not sure of this, it is totally encased in plastic)..permenatly attached to "it"..

Hmm, they didn't show that on the schematic so I can't comment specifically on that. However, if you're getting voltage to the motor and the windings measure open, then it sounds like a bad motor, regardless of the b/i board.

The frost pattern you observed could indeed be an indication of more fun to come. If you have an infrared temp gun, you can get a temp on the coil, should be in the range of -20F.

[AccApp]

I was told those fans are fed 120vac and the board converts it to dc to run the motor. You'll notice the service part is a straight a/c motor without the board. I also heard that modern Friggys won't produce a full frost pattern on the coil without the cover in place and a working fan. Some SxS Friggy's had the neutral for the evap fan run through the defrost bimetal so watch out.

[Samurai Appliance Repair Man]

Good info, AccApp. Domo!