Gremlins!!!!

Topic: Gremlins!!!! (Read 1802 times) previous topic - next topic

Reply #15 – April 29, 2013, 05:49:45 AM

Jay just a question??? His post said the switch or controlling device was for his HEAT. Normally that would be a 220V circuit. So my question to you is how does the neutral come in to play ???? If i am correct 220 circuts do not use the Neutral as wired. Now the issue with the lug i posted is not a wire size issue at all. Reason being i went back to the owner of these vehicles and soldered all the other terminals in his fleet. NO ISSUES. I also checked the current in the circuit and found it was not even close to the wiring capacity. So either those connections are falty and the old standard i live by is correct. SOLDER IS THE ANSWER. Just me not an engineer just a realist!!

NOTE the switch posted by thunder shows a tamper proof TORX. So in my thinking the company did not want it messed with and most likely has a specific instillation procedure and torque for the device. just a guess!!

Also why only one side failed. I come across this with heater blower motors on over the road trucks. The plugs to the heaters burn open on the POSITIVE SIDE NEVER THE GROUND SIDE. This has baffled me as to WHY. The connector has to handle the same current so why the positive side all the time. Conclusion!!! In my thinking is the crimps are different or the connectors are heavier but they are not. Soldering and removing the connector repairs the issue and this prooves the connections are resistive. Thoughts???

Gremlins!!!!

Reply #16 – April 29, 2013, 11:14:01 AM

Quote from: TOM Renzo;413582

You got it and FOE my point is the industry is not allowed to solder any more. I figured you have ran in to this at one point being a dealer TECH. Our Government at work banning solder aint it wonderful. Also stock up on electronic solder. Rumor is it will eventually be BANNED in the future. I cant figure that one out!! So this kind of thing will be common to some point. I had a big disagreement with one of the tech articles in MOTOR MAGAZINE a few years back about this lack of solder on connectors. The article they wrote claims solder-less connectors are better. I do not believe that one bit. THOUGHTS!!!

Unless the government is willing to replace it with something just as good or better, without soldering this country would become defenseless is so many ways. Try to launch a missile or sent a man to the moon with out solder. Just take a circuit board and take all the solder off and what do you have....parts. Just my 2 cents.

Gremlins!!!!

Reply #17 – April 29, 2013, 12:03:11 PM

Quote from: Thunder Chicken;413998

Ok, was to the cottage today, so here are the pics, as promised. I was wrong, it was screwed on instead of riveted, but it was the crimp that failed:

Looks like a terrible crimp! Insulation doesn't go up to the second insulation crimp! I bet they didn't use the proper crimping tool. D'oh.

Gremlins!!!!

Reply #18 – April 29, 2013, 04:48:01 PM

Yes, Scott, as Tom said, this is a two wire 220 circuit - no neutral involved. This was a faulty crimp on a cheap-ass thermostat. The exact type of cheap-ass thermostat you find in most new construction. The replacement thermostat's wires were welded on, looks like a friction weld.

I would bet that a lot of house (and car) fires have been caused by things like this...

Gremlins!!!!

Reply #19 – April 29, 2013, 08:30:57 PM

Makes me nuts THUNDER haw companies cheap out on our expense and sometimes our lives.

Gremlins!!!!

Reply #20 – April 30, 2013, 12:44:28 AM

who cares about cheap , we've got 9 out of 10 people who dont even know the raw difference between "best cost" vs "best price"
once people start shopping best cost, they might come around.

tc~ looks like the weaker side gave out on the tstat, id still verify the same leg of power on the next busy 240v ckt visually to verify you dont have a power problem.
maybe you dont, and if you dont know your ground field resistance then you should. I assume the missing leg you show is L1 based soley on what i believe you used as 240v color coding.