Microwave replacement options
My Furrion FMSN09-BL needs to be replaced. Has anyone used a different brand? Sources are limited to a few vendors and the shipping time doesn’t work for us. Guess we can rough it without. Spoile...
Forum Discussion
Gdetrailer,
I agree with what you're saying about fuses, and that's definitely true with appliances and equipment in normal use. I have to take Gjac's post as sincere and believe he did solve the problem by replacing the fuse, and I'm not sold that his experience was just "luck".
What I'm thinking is that a microwave oven in an RV, which puts a pretty heavy draw on the electrical system, often gets started and run while the A/C is cranking to keep the inside comfortable, or maybe space heaters. With BOTH the A/C and Microwave pulling the juice, the voltage at the microwave might be dropping WAY below what would normally be considered "low voltage" in a sticks & bricks house. With motors (and perhaps the klystron and amplifier in the microwave?) they tend to draw MORE current at lower voltages, so perhaps this is what will trigger the fuse to blow in an RV microwave application, but not in a normal installation in a home. That is, the extra current draw due to the lower than normal start-up voltage pops fuse. I can also see where this might be more likely to be a problem on a 30A rig than a 50A connection.
Just thinking out loud, but that could be a contributing factor. I whole-heartedly agree that fuses don't usually blow for "no reason", but perhaps the RV application presents a "reason" not normally seen with regular installations.
For what it's worth, on our 50A rig, I haven't had a problem with the Microwave/Convection Oven fuse in 17 years of ownership. But I'm always monitoring voltages when we make a hookup and 99% of the time we're on a decent 50A connection. Working off of 30A is "roughing it" for us! LOL
~Rick
I agree with what you're saying about fuses, and that's definitely true with appliances and equipment in normal use. I have to take Gjac's post as sincere and believe he did solve the problem by replacing the fuse, and I'm not sold that his experience was just "luck".
What I'm thinking is that a microwave oven in an RV, which puts a pretty heavy draw on the electrical system, often gets started and run while the A/C is cranking to keep the inside comfortable, or maybe space heaters. With BOTH the A/C and Microwave pulling the juice, the voltage at the microwave might be dropping WAY below what would normally be considered "low voltage" in a sticks & bricks house. With motors (and perhaps the klystron and amplifier in the microwave?) they tend to draw MORE current at lower voltages, so perhaps this is what will trigger the fuse to blow in an RV microwave application, but not in a normal installation in a home. That is, the extra current draw due to the lower than normal start-up voltage pops fuse. I can also see where this might be more likely to be a problem on a 30A rig than a 50A connection.
Just thinking out loud, but that could be a contributing factor. I whole-heartedly agree that fuses don't usually blow for "no reason", but perhaps the RV application presents a "reason" not normally seen with regular installations.
For what it's worth, on our 50A rig, I haven't had a problem with the Microwave/Convection Oven fuse in 17 years of ownership. But I'm always monitoring voltages when we make a hookup and 99% of the time we're on a decent 50A connection. Working off of 30A is "roughing it" for us! LOL
~Rick
