07-16-2016, 04:27 PM
Well I finally got a chance to work on the AC unit with no positive results.
Looked for any of the controls to loose power that would shut down the fan and nothing.
Only thing I did notice, on the blower relay with a meter just prior to the fan quitting I could see the voltage go down which ultimately causes the amperage to go up which resulted in the compressor to overheat and then the breaker popped.
So could this be a bad relay or would there be something else causing the voltage to lower thus seeing it on the relay.
Tried to separate the fan from the compressor and both wires are connected to the same contact so can't do that.
I did go outside and under the coach and looked up under to the fan motor with flashlight and infrared temp gun.
The fan motor would reach 150 degrees before it would quit, sometimes 130 degrees. This was measured where the bearing should be. I also noticed that the air drier which was also replaced got frosted up then melted reaching a temp of around 90 degrees. My next attempt is to pull the unit out and separate the wire that controls the compressor to see if the fan continues to run.
Remember that in a prior note that while at newell they put an amp meter on the fan wire and it never jumped up in amperage prior to shutting down as if someone just flipped a switch.
I could be overlooking something in the box by the condenser, there is a lot of stuff going on in there but spent a lot of time trying to make sense of it.
This was not a problem prior to newell changing out the compressor and air drier, not to put blame on anyone just adding some facts so as to help solve the problem.
Brad
Looked for any of the controls to loose power that would shut down the fan and nothing.
Only thing I did notice, on the blower relay with a meter just prior to the fan quitting I could see the voltage go down which ultimately causes the amperage to go up which resulted in the compressor to overheat and then the breaker popped.
So could this be a bad relay or would there be something else causing the voltage to lower thus seeing it on the relay.
Tried to separate the fan from the compressor and both wires are connected to the same contact so can't do that.
I did go outside and under the coach and looked up under to the fan motor with flashlight and infrared temp gun.
The fan motor would reach 150 degrees before it would quit, sometimes 130 degrees. This was measured where the bearing should be. I also noticed that the air drier which was also replaced got frosted up then melted reaching a temp of around 90 degrees. My next attempt is to pull the unit out and separate the wire that controls the compressor to see if the fan continues to run.
Remember that in a prior note that while at newell they put an amp meter on the fan wire and it never jumped up in amperage prior to shutting down as if someone just flipped a switch.
I could be overlooking something in the box by the condenser, there is a lot of stuff going on in there but spent a lot of time trying to make sense of it.
This was not a problem prior to newell changing out the compressor and air drier, not to put blame on anyone just adding some facts so as to help solve the problem.
Brad
1988 40 ft 8v92 newell
Coach name Big Blue
25 ft Haulmark car hauler with Andersen Anti sway
2012 Toyota FJ Cruiser.