Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > General Discussions > Off-Topic Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 01-04-2012, 11:03 PM
Registered User
 
Join Date: May 2006
Posts: 140
Why won'tmy ovenwork during a power outage, while stove top will?

Hello all,
During a recent extended power outage, we had hot water, and a stove top, but no oven.
The natural gas fired hot water heater has a thermo couple / gas valve,and as long as the pilot is lit, the burner is ready to go.
The electronic ignitors will not fire on the stove top, but a match will get the burners going.
I was not able to find a way to get the oven lit.
I understand you don't know my oven, but generally speaking, what am I missing?
-Paul T

Reply With Quote
  #2  
Old 01-04-2012, 11:06 PM
Registered User
 
Join Date: Dec 2006
Location: beautiful Bucks Co, PA
Posts: 961
My guess is there is a thermocouple in the oven gas supply that is initially heated by electricity when the oven is turned on. So no power, no gas.
Reply With Quote
  #3  
Old 01-04-2012, 11:09 PM
Kuan's Avatar
unband
 
Join Date: Jan 2001
Location: At the Birkebeiner
Posts: 3,841
Your oven uses an ignitor. Maybe one of these:

Range / Oven Igniters | The Ignitor Store
__________________
You don't need a weatherman to know which way the wind blows - Robert A. Zimmerman
Reply With Quote
  #4  
Old 01-04-2012, 11:17 PM
Registered User
 
Join Date: Jan 2002
Posts: 18,350
Electric ignitor on the oven that heats a thermocouple. You might be able to get it going by using a barbecue lighter to heat up the thermocouple and release the gas. But maybe the ignitor needs to be electrically activated the whole time the gas is being released. That's the downside of a gas appliance that really isn't 100% a gas appliance. The Non-Electric company would supply you with a gas stove that needs no electricity at all.
__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
Reply With Quote
  #5  
Old 01-04-2012, 11:22 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by kerry View Post
But maybe the ignitor needs to be electrically activated the whole time the gas is being released.
Correctamundo.

The gas valve opens when it sees a specific resistance. It really doesn't know if the ignitor is working or not.

Would really piss me off when a perfectly functioning ignitor would have to be replaced because it deteriorated very slightly and the resistance was, apparently, less than the gas valve wanted to see...............

I recently replaced the ignitor on the dryer. This device had some type of optical device that viewed the temperature of the ignitor coil and allowed the gas valve to open. Quite different from the stove and much more reliable.
Reply With Quote
  #6  
Old 01-05-2012, 03:26 AM
Stretch's Avatar
...like a shield of steel
 
Join Date: Sep 2009
Location: Somewhere in the Netherlands
Posts: 14,461
Isn't the ignitor system in a gas oven there to stop desperate people from sticking their heads in there and turning the gas on?
__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
Reply With Quote
  #7  
Old 01-05-2012, 06:11 AM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 38,626
Well yes or not getting it lit when you think you did and having an accidental explosion.

I am old enough to have seen one by my first MIL who was trying to light the oven and got a big bubble of gas in there then went back in with a match or lighter and blew a nice orange ball of burning gas out the front door and singed off her facial hair and so forth.

Another minute of gas blowing first would have been really ugly.
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
Reply With Quote
  #8  
Old 01-05-2012, 08:08 AM
Rafi's Avatar
Registered User
 
Join Date: Jan 2003
Location: Garden State
Posts: 474
I know this since I fixed my oven few years ago.
The igniter for the oven is like a glow plug, it is always on when the oven is on. This glow plug is wired in series with the oven gas valve (seperate than the top burners), safety feature. If the glow plug blows (open cuircuit) then the gas valve does not open. During electric outage, there is no power to turn on the glow much less the oven gas vlave.
__________________
2010 ML350 Bluetec
2012 Mustang Convertible
Reply With Quote
  #9  
Old 01-05-2012, 08:30 AM
Stretch's Avatar
...like a shield of steel
 
Join Date: Sep 2009
Location: Somewhere in the Netherlands
Posts: 14,461
Quote:
Originally Posted by t walgamuth View Post
Well yes or not getting it lit when you think you did and having an accidental explosion.

I am old enough to have seen one by my first MIL who was trying to light the oven and got a big bubble of gas in there then went back in with a match or lighter and blew a nice orange ball of burning gas out the front door and singed off her facial hair and so forth.

Another minute of gas blowing first would have been really ugly.
Wow that would have been one for you tube...

...when we first moved to Holland we bought a second hand gas oven that had no (working?) safety feature on it. It made me pretty nervous there was always a smell of gas in the kitchen. Landlords here have it easy - no requirement for either electrical or gas safety check. (Small print - that was the case. It might not be now - we've been out of rented for years and years now)
__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
Reply With Quote
  #10  
Old 01-05-2012, 09:38 AM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by t walgamuth View Post
I am old enough to have seen one by my first MIL who was trying to light the oven and got a big bubble of gas in there then went back in with a match or lighter
These kids don't understand why anybody would have to light an oven with a match............


What do you mean..........you don't have a pilot light.........????
Reply With Quote
  #11  
Old 01-05-2012, 06:25 PM
Registered User
 
Join Date: May 2006
Posts: 140
Thanks for the input

Thanks for the input. It sounds like the oven is not going to work without power. Not the end of the world. We do have water, and hot water, and we can cook. I just bgt the 2000 watt Honda suitcase generator and will use that to keep the heat going so the pipes don't freeze when the power goes out in February.
THANKS AGAIN,=pAUL t
Reply With Quote
  #12  
Old 01-05-2012, 06:52 PM
Registered User
 
Join Date: Jan 2002
Posts: 18,350
Quote:
Originally Posted by t walgamuth View Post

I am old enough to have seen one by my first MIL and singed off her facial hair and so forth.

Another minute of gas blowing first would have been really ugly.
I find the idea of an MIL with facial hair quite funny. I can't imagine it being much uglier.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
Reply With Quote
Reply

Bookmarks

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 12:07 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page