07-01-2016, 05:19 AM
Brad,
Dometic, correct?
How comfortable are you with electricity? If not familiar with safe practices, then don't go into the live circuits.
My first guess would be that, the fan was miswired during the work. Look at the schematic on the panel and check the wiring for the condenser fan motor against that wiring, especially the wiring going into and out of the start/run capacitor.
The capacitor that you replaced inside the coach is for the evaporator unit, so I am not surprised that it had no effect on the problem.
How much current is the fan drawing? Can you clamp your ammeter on one of the leads to the fan?
Those fans are notorious for failing, but the failure is almost always that the bushings wear and the fan won't start.
The second guess is really a wild guess, but the best I remember that fan start circuit has a really old school thermal interrupt that takes the start cap out of the picture. It is a round black device about 1 inch long and 3/4 inch around, as best as I remember.
I am just really trying to think about things that would allow the motor to start but to overheat after running.
And I wouldn't hesitate to put a new run capacitor on the fan motor. You can test the capacitor with a analog volt meter if you think it's the culprit.
When you say it shuts down, what shuts down? Blows breaker? Compressor shuts off? Something else?
My phone is 817 223 2056.
Dometic, correct?
How comfortable are you with electricity? If not familiar with safe practices, then don't go into the live circuits.
My first guess would be that, the fan was miswired during the work. Look at the schematic on the panel and check the wiring for the condenser fan motor against that wiring, especially the wiring going into and out of the start/run capacitor.
The capacitor that you replaced inside the coach is for the evaporator unit, so I am not surprised that it had no effect on the problem.
How much current is the fan drawing? Can you clamp your ammeter on one of the leads to the fan?
Those fans are notorious for failing, but the failure is almost always that the bushings wear and the fan won't start.
The second guess is really a wild guess, but the best I remember that fan start circuit has a really old school thermal interrupt that takes the start cap out of the picture. It is a round black device about 1 inch long and 3/4 inch around, as best as I remember.
I am just really trying to think about things that would allow the motor to start but to overheat after running.
And I wouldn't hesitate to put a new run capacitor on the fan motor. You can test the capacitor with a analog volt meter if you think it's the culprit.
When you say it shuts down, what shuts down? Blows breaker? Compressor shuts off? Something else?
My phone is 817 223 2056.
Richard and Rhonda Entrekin
95 Newell, 390 Ex caretaker
99 Newell, 512 Ex caretaker
07 Prevost Marathon, 1025
Maverick Hybrid Toad
Inverness, FL (when we're home
)