Transfer box problem - Printable Version
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RE: Transfer box problem - Trainer - 07-10-2013
Bob,
If you are measuring 120 vac at each leg feeding the breaker box, there should be 120 vac on each buss bar that the breakers are attached to.
With the cover plate off, one can measure the voltage on each buss bar and on the output wires from each breaker (breaker in the ON position). If voltage on buss bar and no voltage on breaker output, bad breaker.
If no voltage on the buss bars, then the connections at the feed wires are bad. You may be able to remake those connections to correct the situation. Do so with the system de-energized.
RE: Transfer box problem - Richard - 07-13-2013
Bob
Sorry I just got around to reading the post. It sounds like like may have fried the coil that pulls in the contacts for shore power. The coil is replaceable. It's not hard but you have to take the ATS out to gain access.
A quick test is to plug the coach to shore power and then using a plastic or wooden tool to depress the top of the contactor. If you get power then you know the coil is bad.
I had to replace a coil on mine some years ago, I think it was less than fifty bucks.
If you take the ATS out, do burnish the contacts while you have access.
RE: Transfer box problem - Express1 - 07-13-2013
Not transfer box problem??? Just as my a/c guy was removing the burnt board...He says " make sure breakers are OFF" Entering the coach the interior lights are not working...Stumbling my way to the rear closet with flashlight in hand...I turn all breakers off.
anyway, not understanding why lights are off (not working) I start looking around...After checking all I could think about. I checked the Volts coming in L1= 120 L2=0
Started Gennny and the same thing L1=120 L2=0
Call around,
My first go to guy- Tuga
"call Newell"Next call Big Mike at Newell, after telling symptoms he say " Inverter"
Next call Ron Skeen
"Check transfer switch" I did and found one side up other side down
However I can't reset so that both stay down!!
Called Mike back at Newell " Thats how they are suppose to work"
one up on shore power and the other up on genney!
He stands on "Inverter is bad"
My question is can HALF OF THE INVERTER BE BAD?
any way to verify?
Good news is that the L1 works the front A/C and refrigerator...
I CAN STILL HAVE COLD BEER AND STAY COOL.
in the DARK!!PS still need A/C board.
RE: Transfer box problem - Richard - 07-13-2013
I am assuming you turned all breakers back on? Not trying to be a smart guy. If I kill the ac breaker I lose one of the legs.
RE: Transfer box problem - Express1 - 07-13-2013
Will walk back and check...this did occur while he was removing the ac board?????
RE: Transfer box problem - folivier - 07-13-2013
You sure your lights are 120v? Mine are all 12 volts.
RE: Transfer box problem - Express1 - 07-13-2013
Sorry for the delay in response, but a plate of Venison spaghetti got in the way!
Thanks AGAIN Richard. I did turn off breakers for the A/C guy. That does Kill L2!
However I still have no 12v lights, inside. I do have lights connected to chassis (bay area and yard lights).
Next I will check the all off 12v switch at the entrance door?
Seriously! I am looking for a replacement A/C board.
RE: Transfer box problem - Express1 - 07-13-2013
Checked the all-off 12v switch at the door. It has no, zip, nada, nothing!
I'm lost,
Why would I have lost 12v interior lighting at the same time a/c guy is working on pulling the circuit board??
TOTALLY DEFUSED,,
RE: Transfer box problem - Express1 - 07-13-2013
NEVER MIND, went back and pull all fuses. The one labeled 12volt master looked good to old eyes!,, NOT!
RE: Transfer box problem - folivier - 07-14-2013
Glad you got lights again. I always use my voltmeter so I can hear the fuse beep. You can check without pulling the fuse.
I think Newell has the SCS boards again but you need to give them your old board so they can get them rebuilt. Not sure who they use for rebuilding them.