Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
Heater blowing fuse
Forum Index -> Thing/Type 181 Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
Pbotsonis
Samba Member


Joined: January 09, 2008
Posts: 506
Location: Parker, Colorado
Pbotsonis is offline 

PostPosted: Tue Sep 23, 2008 7:54 pm    Post subject: Heater blowing fuse Reply with quote

I just got my heater fixed today. It is a 73 gas heater. It works great but it pops the fuse. I am putting the white fuse in it. How do I prevent it from poping the fuse?
Thanks
Back to top
View user's profile Send private message Send e-mail Yahoo Messenger Gallery Classifieds Feedback
Ferretkona
Samba Member


Joined: December 03, 2005
Posts: 1306
Location: Columbia, CA
Ferretkona is offline 

PostPosted: Tue Sep 23, 2008 9:53 pm    Post subject: Re: Heater blowing fuse Reply with quote

Carman69 wrote:
,,,,, How do I prevent it from poping the fuse?
Thanks

Don't use it!
_________________
74 181 Thing
2008 Ford Sport Trac V8 4x4
2008 Ford Escape V6
Back to top
View user's profile Send private message Send e-mail Visit poster's website Classifieds Feedback
[email protected]
Samba Member


Joined: February 21, 2003
Posts: 878
Location: Clifton Park NY Saratoga County
mpb181@aol.com is offline 

PostPosted: Wed Sep 24, 2008 1:34 pm    Post subject: Reply with quote

the fuse will blow for the following reasons,
1. There is no heat- there is no fuel coming from the pump. The pump is not working, not clicking.... hit it with a hammer. or clean it. check to make sure fuel is going to the pump from the gas tank
2. There is no heat-The glow plug is dirty, clean it.
3. There is heat
The heater is not cycling on and off, the heat regulator contacts are always making contact, its overheating.


http://veewiki2.webfactional.com/HeaterBN4
Back to top
View user's profile Send private message Send e-mail Visit poster's website Facebook Gallery Classifieds Feedback
[email protected]
Samba Member


Joined: February 21, 2003
Posts: 878
Location: Clifton Park NY Saratoga County
mpb181@aol.com is offline 

PostPosted: Wed Sep 24, 2008 1:34 pm    Post subject: Reply with quote

ps try a red fuse. 16a
Back to top
View user's profile Send private message Send e-mail Visit poster's website Facebook Gallery Classifieds Feedback
Pbotsonis
Samba Member


Joined: January 09, 2008
Posts: 506
Location: Parker, Colorado
Pbotsonis is offline 

PostPosted: Wed Sep 24, 2008 7:48 pm    Post subject: Reply with quote

I just did that. It works great. But it gets hot and then blows normal temtature air. Is that normal? Is it part of the cycling system?
Thanks
_________________
Price does not include PayPal fees. Text is the fastest way to reach me
Back to top
View user's profile Send private message Send e-mail Yahoo Messenger Gallery Classifieds Feedback
[email protected]
Samba Member


Joined: February 21, 2003
Posts: 878
Location: Clifton Park NY Saratoga County
mpb181@aol.com is offline 

PostPosted: Thu Sep 25, 2008 3:54 am    Post subject: Reply with quote

Yes, it will cycle hot air then cool, depending on how far you have the temp cable pulled out
all the way out is the hottest,
all the way in coolest
its the cable to the extreme left, do you have an owners manual?
It explains in there how to control the heater
Back to top
View user's profile Send private message Send e-mail Visit poster's website Facebook Gallery Classifieds Feedback
MercurialThing
Samba Member


Joined: January 12, 2008
Posts: 218
Location: Matthews, NC
MercurialThing is offline 

PostPosted: Thu Sep 25, 2008 7:11 am    Post subject: Reply with quote

I thought the heater was supposed to have an 8 amp fuse? If so, adding a 16 amp fuse to that circuit is a really bad idea.

I have melted insulation in my wiring harness because the PO added 16 amp fuses to circuits that were blowing the correct 8 amp fuse. He's lucky he didn't end up with a car-B-Q.

IF (like I said I'm not positive) the heater fuse is supposed to be 8 amp, you'll want to find the source of the short and fix it. If it's supposed to be 16 amp, then great, you've found the problem.
_________________
..._____
..|_____|
[o\|_|_|/o]
.U..........U
Southern Integrity Aircoolers
Back to top
View user's profile Send private message Visit poster's website Gallery Classifieds Feedback
DUNEDRIVER
Samba Member


Joined: December 22, 2006
Posts: 124

DUNEDRIVER is offline 

PostPosted: Thu Sep 25, 2008 4:23 pm    Post subject: Reply with quote

It is supposed to be an 8 amp fuse definatly. I would bet you need to adjust the flame sensor because it is getting too hot and blowing the fuse.
Back to top
View user's profile Send private message Classifieds Feedback
Pbotsonis
Samba Member


Joined: January 09, 2008
Posts: 506
Location: Parker, Colorado
Pbotsonis is offline 

PostPosted: Thu Sep 25, 2008 5:22 pm    Post subject: Reply with quote

It worked great yesterday. Today It won't get hot. Where is the flame sensor? I used a used fuel pump so maybe it was a bad pump. Any other trouble shooting ideas? Yeasterday it got so hot that it burnt your hand when you felt it. Then it wouln't get hot for a while. I still turns but no heat is coming out.
Thanks.
_________________
Price does not include PayPal fees. Text is the fastest way to reach me
Back to top
View user's profile Send private message Send e-mail Yahoo Messenger Gallery Classifieds Feedback
DUNEDRIVER
Samba Member


Joined: December 22, 2006
Posts: 124

DUNEDRIVER is offline 

PostPosted: Thu Sep 25, 2008 5:29 pm    Post subject: Reply with quote

The flame sensor is om the side opposite of the fan, it has several wire connections on top of it. It is a ferrite rod that runs down into the canister and when it get to hot it is what signals your fuel pump to turn on and off. When an overheat condition exist it blows the 8 amp fuse. yuo can loosen the nut that holds this part in the canister and pull it straight out if the canister. It is about 5 inches long and may be difficult to get out. Anyhwo clean it up with some 0000 steel or aluminum wool and put in back in place. the sensor itself is adjustable but I do not have my manual here at work with me to remember how it is set. Anyhow the manual is available here in the forums just do a quick search. Anyhow remove the 16A fuse and put the proper 8A fuse in before you turn your car into a huge fireball. hope this helps.
Back to top
View user's profile Send private message Classifieds Feedback
Pbotsonis
Samba Member


Joined: January 09, 2008
Posts: 506
Location: Parker, Colorado
Pbotsonis is offline 

PostPosted: Thu Sep 25, 2008 5:40 pm    Post subject: Reply with quote

It helps alot and I really appreaciate it. Would the sensor have anything to do with it not getting hot again? I just got back from Advanced autos and I have a 8 amp fuse back in it.
Thanks.
_________________
Price does not include PayPal fees. Text is the fastest way to reach me
Back to top
View user's profile Send private message Send e-mail Yahoo Messenger Gallery Classifieds Feedback
DUNEDRIVER
Samba Member


Joined: December 22, 2006
Posts: 124

DUNEDRIVER is offline 

PostPosted: Thu Sep 25, 2008 5:43 pm    Post subject: Reply with quote

Check out this link it explains the getting too hot and blowing the fuse, This should help you. Also like it says your thermostat may be stuck too.
here is the link.
http://veewiki2.webfactional.com/HeaterBN4
Back to top
View user's profile Send private message Classifieds Feedback
[email protected]
Samba Member


Joined: February 21, 2003
Posts: 878
Location: Clifton Park NY Saratoga County
mpb181@aol.com is offline 

PostPosted: Thu Sep 25, 2008 6:40 pm    Post subject: Reply with quote

the gas heater fuse is a 16 amp fuse, check your owners manual.
this is position 9 on the fuse block.
sounds like your heater is in the always on position, its usually the heat regulator that is siezed in the closed position.
Back to top
View user's profile Send private message Send e-mail Visit poster's website Facebook Gallery Classifieds Feedback
DUNEDRIVER
Samba Member


Joined: December 22, 2006
Posts: 124

DUNEDRIVER is offline 

PostPosted: Thu Sep 25, 2008 8:23 pm    Post subject: Reply with quote

Not the fuse in the fuse block, The fuse on the heater itself, it is an 8A White not Red. It is suppose to blow when the heater exceeds 300 degrees. The thermostat should cut fuel at approx 250 degrees and allow the fan to cool the heater, If the thermostat sticks and does not cut the fuel the heater will overheat and the fuse will blow at 300 degrees. You are correct about the fuse in the fuse block it is a red one, but the heater itself is an 8 Amp according to the factory Eberspacher manual I have. Its in German but lucky I was born in Germany and spent most my childhood there.
Back to top
View user's profile Send private message Classifieds Feedback
KdFMotors
Samba Member


Joined: March 10, 2008
Posts: 4

KdFMotors is offline 

PostPosted: Tue Jan 04, 2011 3:42 pm    Post subject: Maintenance on a working BN4 Reply with quote

Old thread here, I know.

Does anyone know If there are oil holes for oiling the fan motor? Or is it lifetime lubed?

Also, mine is running rich sometimes, judging by exhaust smell. I'm going to change the spark plug, which is sooty and worn under the electrode, but the gap seems too small compared with the new one I have. And check the voltage at the relay to see if the fan is getting 11v.

If anyone's interested, I'll report back. Thanks,

Jim
Back to top
View user's profile Send private message Classifieds Feedback
SilverThing Premium Member
Samba Member


Joined: July 19, 2004
Posts: 833
Location: Everett
SilverThing is offline 

PostPosted: Tue Jan 04, 2011 5:32 pm    Post subject: Reply with quote

I don't know about any lube holes on the fan motor. It has been far too long since I have actually looked at it to tell you from memory. I did a quick look through all of the bn4 related materials I have gathered over the years and I didn't find anything that mentioned lubing the motor, but I may have missed something. All I found was a mention of greasing the cam lobes for the contact points.

Make sure the heater is getting a minimum of 11.6 volts at the relay (according to vw and eberspächer).

Running rich could be due to the fuel metering being off. Eberspächer specifies that 13-15cc of fuel to be pumped every 200 strokes of the fuel pump. If it is outside of that range, it will need to be adjusted.

While you're checking that: check the motor speed. Should be 4850-5350 rpm running off of 12 volts. The fuel pump will click 147-162 times a minute if the motor speed is correct.

Spark plug gap should be 0.098in/2.5mm

There are several bn4 repair manuals that have been posted in the technical section that may be of use. http://www.thesamba.com/vw/archives/manuals/heater_ac.php
There is also this one: http://www.thesamba.com/vw/archives/manuals/f-3_fresh_air_heating_1969.php

Hope this helps!
_________________
"I like how everyone likes talking about Zeke's Thing yet he's the only one that's ever seen it." - Katie
"I've seen pictures..." - Jeremy
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Wildthings
Samba Member


Joined: March 13, 2005
Posts: 51689

Wildthings is offline 

PostPosted: Tue Jan 04, 2011 7:30 pm    Post subject: Reply with quote

Many years ago I lubed the fan motor on my first '73 Thing. I just remember that it was a pain figuring out how to get it apart without screwing something up. If I were to do this job again I think I would drill a hole in the fan to get access and just spray soon lube in. This pic is of the heater fan in my 83 1/2 Vanagon. You can see how I drilled the fan to get access to the bearing.

Image may have been reduced in size. Click image to view fullscreen.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
KdFMotors
Samba Member


Joined: March 10, 2008
Posts: 4

KdFMotors is offline 

PostPosted: Wed Jan 12, 2011 2:28 pm    Post subject: Reply with quote

SilverThing and Wildthings --

Thanks, guys. for these replies.

I will report results. Changing the plug did not help. Voltage is 11.5. Checking the pump output is next.

Good idea drilling that hole. Suppose I will when I get in there. Can't hurt.
Back to top
View user's profile Send private message Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Thing/Type 181 All times are Mountain Standard Time/Pacific Daylight Savings Time
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2024, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB
Links to eBay or other vendor sites may be affiliate links where the site receives compensation.