Can my microwave cause my Hughes EPO to turn off momentary??

[Redwolf]

My emergency shut off kicks off whenever I use my microwave to heat on. No fuses in coach trip or at the park pedestal. Power watchdog comes back on after emergency shut off is done and stays on unless I try to heat up something in the microwave.
I had the female 50 amp plug changed at the park pedestal. I'm thinking of changing out the 50 amp power plug from the coach.
The microwave when powered on to heat instantly sets off emergency power off on in line Hughes power watch dog. Then contactor reconnects and leaves message that says voltage from park is either too high or too low and that watch dog will continue in safe mode.
Can a bad microwave cause my emergency surge protector go off without tripping the microwave breaker???
What would be your next move in this situation. We have a 2011 Landmark Augusta with original stock microwave.
Thanks

 

[Redwolf]

Voltage power on both circuits 120 volts at pedestal, at inbound surge protector and outbound surge protector. No breakers trip. Coach or pedestal.

 

[Roller4tan]

The microwave could be using too much power from the leg that feeds. This probably causes your watchdog to trip for undervoltage or too much voltage difference in the 2 legs. Since it is the original microwave, it could be suspect. I'm assuming the microwave has worked without issues lately. Breaker won't trip for "minor" voltage issues.

 

[Redwolf]

The microwave for a few days before the emergency shut off, would kind of hiccup with power draw when it would first start. The microwave is original and I'm reading that they don't last much more than ten years. Scale seems to be weighing on microwave. I can't even see how to get to the back where I believe it is mounted. This looks like bear. Ugh. Thx

 

[taskswap]

I've had microwaves that lasted decades and microwaves that lasted 3 years. It's certainly an easy thing to verify. In the cabinet above your microwave you should find a power plug (they're almost never hard-wired through a junction box.) Yank it and plug in a hair dryer. Most standard hair dryers are 1500W or so and will simulate a microwave load pretty well. If that works, microwaves aren't super expensive items to replace.

They can be confusing to know how to unmount them until the very first day you install a new one (then you're a pro!) They nearly all install in one of two ways:

1. Four screws down through the upper cabinet into the top of the unit. Open the cabinet and look. If they're there, you'll see them. I've only ever owned one like this. Since all the weight is on those four screws, they usually have huge fender washers to spread the load and they're impossible to miss.

2. Hung on a wall bracket installed first on the wall, then two screws through the top or left/right sides just hold it in position.

These things are designed to be installed after cabinets are installed, and to not require a trim carpenter to do it. The screw holes may be a little hard to find, but I've never seen one actually covered, plugged, or otherwise cosmetically hidden. If you hunt around with a flashlight you're sure to find them. Look in the cabinets above and to the left/right of the unit.

I did have ONE microwave maybe 20 years ago that had you install a rectangular steel "sleeve" first, and the microwave slid into that and was held with small trim screws, but it's pretty rare. If you share your microwave model number we can help you figure out how to remove it. It'll just be the reverse of the mounting instructions and they're usually easy to find online.

 

[Redwolf]

Hi!
Thanks!
I looked directly above the microwave (there is a shelf).and I too thought there would be screws. Nothing. I know that microwaves over the stove mount on the wall behind the microwave on a microwave bracket. They usually set on this bracket and like a hinge swing on up to the shelf above where 2 screws go through that shelf and into the top of the microwave. All the weight basically sets on the back bottom bracket. The top shelf screws only keep the microwave from swinging down on "pivot" hinge bracket.
Just don't see those top screws.
It's a 2011 Dometic DOTRC17SSC.
Not sure how it's mounted.
Can't find the mounting instructions for that year and model. It's the original microwave.
Thanks

 

[cookie]

There may be two long screws or bolts that run on an angle from the front bottom of the microwave to the top of the wall mounting plate.
I've installed more than a half dozen microwaves and I don't think there has been two mounts alike.

Peace
Dave

 

[taskswap]

https://www.appliancefactoryparts.com/content/pdfs/131468-8.pdf

Here's the manual for that model. It shows a back-bracket/two-top-screw combo. Perhaps a previous owner or Heartland put some wood-look stickers over the holes or similar? Try fishing around with a magnet, maybe. I tried attaching the photo directly but I get "Something Went Wrong" from the forum doing that lately.

 

[Redwolf]

Right on! Thank you for all your help. I will find those 2 screws and get back to you.

 

[Redwolf]

I've had microwaves that lasted decades and microwaves that lasted 3 years. It's certainly an easy thing to verify. In the cabinet above your microwave you should find a power plug (they're almost never hard-wired through a junction box.) Yank it and plug in a hair dryer. Most standard hair dryers are 1500W or so and will simulate a microwave load pretty well. If that works, microwaves aren't super expensive items to replace.

They can be confusing to know how to unmount them until the very first day you install a new one (then you're a pro!) They nearly all install in one of two ways:

1. Four screws down through the upper cabinet into the top of the unit. Open the cabinet and look. If they're there, you'll see them. I've only ever owned one like this. Since all the weight is on those four screws, they usually have huge fender washers to spread the load and they're impossible to miss.

2. Hung on a wall bracket installed first on the wall, then two screws through the top or left/right sides just hold it in position.

These things are designed to be installed after cabinets are installed, and to not require a trim carpenter to do it. The screw holes may be a little hard to find, but I've never seen one actually covered, plugged, or otherwise cosmetically hidden. If you hunt around with a flashlight you're sure to find them. Look in the cabinets above and to the left/right of the unit.

I did have ONE microwave maybe 20 years ago that had you install a rectangular steel "sleeve" first, and the microwave slid into that and was held with small trim screws, but it's pretty rare. If you share your microwave model number we can help you figure out how to remove it. It'll just be the reverse of the mounting instructions and they're usually easy to find online.

I plugged a variable 12 amp Sawzall into that circuit while I looked at my surge protector app amp readings and the circuit is just fine. Microwave is toast. Thanks for the hairdryer idea.

 

[taskswap]

I plugged a variable 12 amp Sawzall into that circuit while I looked at my surge protector app amp readings and the circuit is just fine. Microwave is toast. Thanks for the hairdryer idea.

Friday humor: don't put the sawzall away. If you can't find those screw, I've got a second idea for you to locate them...