RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×


Reply
 
Thread Tools Display Modes
Old 10-12-2020, 11:26 AM   #1
Junior Member
 
Join Date: May 2020
Location: DePere, WI
Posts: 18
Microwave doesn't get power when using generator

I get no power to my Microwave when using generator power. The microwave works fine on shore power. I've checked the breaker panel and everything looks OK. What to do?
Niels Jensen is offline   Reply With Quote
Old 10-12-2020, 11:34 AM   #2
Ambassador Member
 
Duckogram's Avatar
 
Join Date: Mar 2013
Location: Flawda
Posts: 2,668
Secret info

The OP has a 2016 MBS 2400W.
__________________
Ducky
Ď18 Sunseeker 2800QS
Towing Smart
No PMís.
Duckogram is online now   Reply With Quote
Old 10-12-2020, 12:00 PM   #3
Head Rambler
 
Join Date: Mar 2008
Location: Southwest Alabama
Posts: 8,505
Which generator do you have?

Have you checked the breaker at the generator? It is a rare occurrence but I have seen one side of a double pole breaker be tripped and the other not. Also some generators have two single pole breakers instead of a double pole breaker.

Have you checked the transfer switch to make sure that all the wiring connections are clean and tight?
__________________
Salem 29RKSS Pushing a GMC Sierra 2500HD!
Gotta go campin!
Bama Rambler is offline   Reply With Quote
Old 10-12-2020, 12:03 PM   #4
Pickin', Campin', Mason
 
5picker's Avatar
 
Join Date: Aug 2015
Location: South Western PA
Posts: 12,990
Quote:
Originally Posted by Bama Rambler View Post
Which generator do you have?

Have you checked the breaker at the generator? It is a rare occurrence but I have seen one side of a double pole breaker be tripped and the other not. Also some generators have two single pole breakers instead of a double pole breaker.

Have you checked the transfer switch to make sure that all the wiring connections are clean and tight?
X2

Is the microwave the ONLY thing that doesn't work off generator -vs- shore power?
__________________
_________________________________________
2016 Flagstaff 8529IKBS Diamond Package 5th Wheel-Goodyear Endurance Tires
2017 Ford F-Series SCREW 4x4 - Factory Puck B&W Companion
TST Tire Monitor w/Repeater - Sinemate 3500w Gen.

Days Camped: '17=30 '18=51 '19=58 '20=98
5picker is offline   Reply With Quote
Old 10-12-2020, 12:35 PM   #5
Junior Member
 
Join Date: May 2020
Location: DePere, WI
Posts: 18
I do have a 2016 Sunseeker MBS 2400W.
The generator is an Onan 3.6 Kw.
Its raining like hell today, but I tried to find a breaker on the gen. Didn't find it.
I have a Progressive Dynamics PD4000 Series Power Control Center. It has breakers and fuses galore, and all look good.
I've owned the Sunseeker for one year. The generator/microwave worked fine until yesterday.
Niels Jensen is offline   Reply With Quote
Old 10-12-2020, 12:47 PM   #6
Junior Member
 
Join Date: May 2020
Location: DePere, WI
Posts: 18
I believe everything else worked off the Gen except the Microwave. I'll confirm that tomorrow and report back.
Niels Jensen is offline   Reply With Quote
Old 10-12-2020, 01:42 PM   #7
Senior Member
 
BobHanke's Avatar
 
Join Date: Sep 2013
Location: West Des Moines, IA
Posts: 501
If you have an electric fireplace, there may be a switch to send power to it or the microwave.
BobHanke is offline   Reply With Quote
Old 10-12-2020, 01:46 PM   #8
Senior Member
 
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 9,804
Quote:
Originally Posted by Niels Jensen View Post
I get no power to my Microwave when using generator power. The microwave works fine on shore power. I've checked the breaker panel and everything looks OK. What to do?
My first thought would be the transfer switch. A relay is involved and they are often a failure point.

If the Transfer Switch is bad you won't have any AC from the Generator, anywhere except at the input of the transfer switch. A quick check with a Multimeter at the Transfer Switch input with generator running can save a lot of "guessing and chasing" time.
__________________
"A wise man can change his mind. A fool never will."

"You only grow old when you run out of new things to do"

2018 Flagstaff Micro Lite 25BDS
2004 Nissan Titan
TitanMike is offline   Reply With Quote
Old 10-12-2020, 03:16 PM   #9
Senior Member
 
mike.t's Avatar
 
Join Date: Sep 2014
Location: Western AZ
Posts: 2,266
GFI
__________________
2009 Ram 3500 Mega Cab
2018 Wilderness 2450FB

2014 Dodge Durango
2012 Dodge Challenger
I was never taught not to like you, you did that!
mike.t is offline   Reply With Quote
Old 10-12-2020, 03:17 PM   #10
2012 Solera
 
Join Date: May 2012
Posts: 1,497
If you have 120 volts AC from the generator everywhere except the microwave, a different problem than no 120 anywhere from the generator.
Many devices will run without 120. Two that will not are the microwave and the air conditioning. An alternative test for 120 volts could be plugging a 120 volt device (or an AC voltmeter) into one of the outlets and see if it works.
My first guess - based on my experience - is that you have no 120 from the generator anywhere, and the circuit breaker on the generator baseplate is tripped. I have recovered from this problem by switching that breaker completely off, then back on. I don’t know why that breaker occasionally trips - but mine does. Next step if not that breaker would be the transfer switch, as noted above. Also, others on this forum have found wiring problems between the generator and the transfer switch.
If you have 120 volts from the generator everywhere except the microwave, a different problem. If the microwave works on shore power but not on generator, and you have 120 volts from the generator elsewhere, a very confusing problem.

FYI, Jim
__________________
JLeising
2012 Solera "S"
Calif SF Bay Area
JLeising is offline   Reply With Quote
Old 10-12-2020, 03:19 PM   #11
Senior Member
 
JoePa77's Avatar
 
Join Date: May 2019
Location: Stow, Ohio
Posts: 141
Maybe the plug came lose on the microwave. That happened to me that the road vibration caused it to come out. I opened the access panel and saw the cord not connected, so I simply plugged it back in. Also expanded the prongs so it wouldn’t happen easily again.
__________________
2020 Forest River Forester 2861DS

JoePa77 is offline   Reply With Quote
Old 10-12-2020, 03:27 PM   #12
Pickin', Campin', Mason
 
5picker's Avatar
 
Join Date: Aug 2015
Location: South Western PA
Posts: 12,990
Quote:
Originally Posted by JoePa77 View Post
Maybe the plug came lose on the microwave. That happened to me that the road vibration caused it to come out. I opened the access panel and saw the cord not connected, so I simply plugged it back in. Also expanded the prongs so it wouldnít happen easily again.
I believe the OP indicated the microwave works fine on shore power... just not when on the generator. If the microwave was simply unplugged... it wouldn't work on shore power either.
__________________
_________________________________________
2016 Flagstaff 8529IKBS Diamond Package 5th Wheel-Goodyear Endurance Tires
2017 Ford F-Series SCREW 4x4 - Factory Puck B&W Companion
TST Tire Monitor w/Repeater - Sinemate 3500w Gen.

Days Camped: '17=30 '18=51 '19=58 '20=98
5picker is offline   Reply With Quote
Old 10-12-2020, 04:11 PM   #13
Senior Member
 
JoePa77's Avatar
 
Join Date: May 2019
Location: Stow, Ohio
Posts: 141
Quote:
Originally Posted by 5picker View Post
I believe the OP indicated the microwave works fine on shore power... just not when on the generator. If the microwave was simply unplugged... it wouldn't work on shore power either.
I am so very sorry. I didnít see that written by the OP. I will be more careful about comments going forward. Thanks for the input.
JoePa77 is offline   Reply With Quote
Old 10-12-2020, 08:13 PM   #14
Pickin', Campin', Mason
 
5picker's Avatar
 
Join Date: Aug 2015
Location: South Western PA
Posts: 12,990
Quote:
Originally Posted by JoePa77 View Post
I am so very sorry. I didnít see that written by the OP. I will be more careful about comments going forward. Thanks for the input.
WELL... DON'T LET IT HAPPEN AGAIN!


Seriously. It's all good and I miss things too. I'm just trying to keep the thread on track as lots of folks will jump into a thread in the middle (read only your post or the last couple posts but not the entire thread) and then go down the wrong path.
__________________
_________________________________________
2016 Flagstaff 8529IKBS Diamond Package 5th Wheel-Goodyear Endurance Tires
2017 Ford F-Series SCREW 4x4 - Factory Puck B&W Companion
TST Tire Monitor w/Repeater - Sinemate 3500w Gen.

Days Camped: '17=30 '18=51 '19=58 '20=98
5picker is offline   Reply With Quote
Old 10-12-2020, 09:51 PM   #15
Senior Member
 
Join Date: May 2019
Posts: 1,296
Quote:
Originally Posted by mike.t View Post
GFI
Your suggestion is very vague, but if I interpret it correctly, can you explain how GFI has something to do with the microwave operating correctly on shore power but not on the motorhome’s generator power?
__________________
2020 Sunseeker 2440DS Ford, Trekker cap, Topaz paint
BehindBars is offline   Reply With Quote
Old 10-12-2020, 10:22 PM   #16
Senior Member
 
JoePa77's Avatar
 
Join Date: May 2019
Location: Stow, Ohio
Posts: 141
Quote:
Originally Posted by 5picker View Post
WELL... DON'T LET IT HAPPEN AGAIN!


Seriously. It's all good and I miss things too. I'm just trying to keep the thread on track as lots of folks will jump into a thread in the middle (read only your post or the last couple posts but not the entire thread) and then go down the wrong path.

I will try my best.
lol 😂
JoePa77 is offline   Reply With Quote
Old 10-12-2020, 11:21 PM   #17
Site Team
 
wmtire's Avatar
 
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 24,701
Quote:
Originally Posted by Niels Jensen View Post
The generator is an Onan 3.6 Kw.
Its raining like hell today, but I tried to find a breaker on the gen. Didn't find it.
Quote:
Originally Posted by Niels Jensen View Post
I believe everything else worked off the Gen except the Microwave. I'll confirm that tomorrow and report back.
I don't know your RV experience so am going to start out with basics, which may not apply to you. You will have two different electric systems as far as the house part of your motorhome goes. Some stuff works off 12 volt DC and some stuff works off of 120 volt AC. This thread link below will go into that with more details.


https://www.forestriverforums.com/fo...nt-152813.html



If for some reason the circuit breaker on the generator is tripped, none of your 120 volt AC items may have worked and you only noticed the microwave. Your 12 volt DC items would still function off the battery, giving you a false sense they were being powered via the generator.


On some of the Onans the circuit breaker is off to the right hand side of the panel like in this picture. If so, you may can see if it's tripped and turn if fully off and on again to reset it to be sure.
Attached Thumbnails
Click image for larger version

Name:	onancb.jpg
Views:	45
Size:	23.6 KB
ID:	241067  
__________________
2011 Flagstaff 831 RLBSS

I often say to myself, "I can't believe that cloning machine worked."
wmtire is online now   Reply With Quote
Old 10-13-2020, 07:30 AM   #18
Senior Member
 
Join Date: Jul 2015
Location: NJ
Posts: 840
Did you measure the AC voltage while on generator? It's possible that the Genset is not creating enough voltage for the microwave to power up. I.e. could be a issue with the genset or there is a wiring issue. On a side note, does the AC work while on generator?
__________________
2016 3011DS Forester
2014 Honda CRV

Chuck & Lois
newRVer is offline   Reply With Quote
Old 10-13-2020, 09:08 AM   #19
Ambassador Member
 
Duckogram's Avatar
 
Join Date: Mar 2013
Location: Flawda
Posts: 2,668
Quote:
Originally Posted by Niels Jensen View Post
I believe everything else worked off the Gen except the Microwave. I'll confirm that tomorrow and report back.
Lets be patient and wait for the answer. Lotís of mud slinging around until then.

For the OP You might need this:
Attached Thumbnails
Click image for larger version

Name:	9DB52291-712E-40C6-A39A-B0B29FE2C17E.jpeg
Views:	66
Size:	157.5 KB
ID:	241080  
__________________
Ducky
Ď18 Sunseeker 2800QS
Towing Smart
No PMís.
Duckogram is online now   Reply With Quote
Old 10-13-2020, 03:43 PM   #20
Junior Member
 
Join Date: May 2020
Location: DePere, WI
Posts: 18
Yippie!!! I checked the 120 V outlets and they had no power either. Next I looked more carefully for the breaker reset switch, as shown in the second diagram some dude sent. Yup, it was "off". The switch looks like a regular on-off switch. That did the trick.

Thanks to everyone who chipped in!
Niels Jensen is offline   Reply With Quote
Reply

Tags
generator, microwave, power

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 09:52 AM.