Last night I decided to run one of the 2 AC/heat pump units on heat mode to take the chill off a little bit. I'm hooked up to 50 amp. After a couple minutes I could feel the warm air coming through. After running about 5 minutes the unit started emitting a very loud and scary noise something like a combination of a motorcycle and a truck jake brake. I got it turned off as fast as I could. My daughter smelled an odor, which I did not, so we opened up some windows and ran exhaust fan for a few minutes until it dissipated. There was no visible smoke. It was raining and getting dark so I did not investigate further. I'll go up there today and take a look. I'm expecting this will be big $$. Anyone ever had something like this?
Sounds like a broken fan blade could have made the initial noise, remove the covers and give it a good inspection.
That's a good suggestion. Coleman-Mach A/C went through a few years of fan blades that disintegrated. They've fixed those issues now and you can easily get replacement fans.
The covers are easy to remove - just four screws and you can get at everything up top. Of course, you have to get up on the roof to do the checking.
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2017 Winnebago Adventurer 37F
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Thanks for the advice. I went up top and took a look this morning and the fan seemed fine. I gave it a spin but I did not grab each blade to see if it was solid or wobbly. I also opened up the capacitor compartment to look for any sign of burnt wires, etc. I didn't see anything unusual but I'm no expert. I buttoned it up and and held my breath when I started up air conditioner (cooling this time) and there was no noise and I had cool air after a minute. I let it run for another minute or so but then turned it off because we were heading out to lunch and I was causing a delay. At this point, I'm optimistic but still a bit worried about what happened.
Dancincampers,
that's a very interesting question. You told me something I didn't know. As I said, i just wanted to take the chill off so I may have been in the neighborhood of 65 degrees. The unit has been working fine for cooling the past few days so I am assuming that all is ok with the system. It will be a while before I will need heating but when I do, I will give it a try and keep your advice in mind.
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