Lighting, Light Fixtures, Ceiling and Exhaust Fans - No high/med speed. Very slow low.

Sorry if this is a repeat question, did some unsuccessful digging through here first before deciding to ask.

I've got a Harbor Breeze Halston II 52" ceiling fan with no remote or fancy switching. Just hot, neutral, and ground for the house wiring coming from a simple on/off switch and hot for light(blue)/fan motor(black), neutral, and ground for the fan. Have fan blue/black attached to house black, fan white to house white, and fan green to house green.

Installed my first Halston II about 3 months ago. Worked OK for a few days, then I lost high and medium speeds. Low would work, but only if I helped it get started, then it would slow to a halt within 10-15 minutes. The light works with no problems or anomalies. The blades turn freely when the fan is off. No excess dirt or grime. So I thought I got a bum fan that went out before it's prime. Finally got around to getting a new one today and got it swapped out. Well, right off the bat we have the same situation. No high or medium, and a crippled low.

Are we talking bad wiring here that's just not supplying the fan with enough juice to let it run properly? Can a faulty breaker cause this? I'm pretty ignorant of electrical wiring and could use some insight as to possible reasons for this to happen. Thanks in advance for any help that can be offered.

well right off the bat i can think of 3 different scenarios. first being that you may have a 3 way switch set up and the otherside that your not seeing is a dimmer, make sure that your switch that you know operates the fan has a on/off on the switch itself. secondly check the voltage on the house black to the house white make sure that it is in the range of 110v -125v(do that anyway that will tell you right away if its the fan or the house power. if you have the correct voltage on the house black and white then it is not your house power and you got ANOTHER dud fan. if it is your house power and you dont have the right power there you make have some lights in that room wired in series and the fan isnt getting the full voltage. i have ran into that situation before and try something else, use the same bulb in the fan as you do another part of the house and see if they are the same brightness that may also tell you that your fan wiring could be wired in series (branch circuits in houses are ran in parallel.)
please reply with anything you have done im interested in the outcome of your project, hope i helped and reply back if you need me to clarify anything i said.

I'll give it a shot when I get home from work today. Unless there's a quirky deal with the switch it should be just a simple on/off toggle switch with no dimmer. Quirky as in it would have to be a dimmer inside the gang box but not exposed on the face plate. I've done some medie wiring in the attic and I THINK it might be daisy chained, but I can't remember for sure. Anyway, will get back to you with what I find out on the voltage, thanks much for your time.

Sorry for the delay in reply. Anywho, checked the voltage of my house wiring after the switch and it's hitting about 121.3, so pretty decent. I also hooked the fan back up and checked the exposed ends of the spliced wiring, thinking maybe the fan was causing something weird in the voltage, but no go, everything checks out fine. I really can't think of anything being wrong other than being lucky enough to get two faulty fans...