Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-14-2016, 02:40 PM   #71
2 Rivet Member
 
2014 Interstate Ext. Coach
Monroe , Washington
Join Date: Aug 2012
Posts: 60
Quote:
Originally Posted by amirm View Post
I have not taken delivery of my AS yet (next week!) so don't know the answer to this. From the pictures, it doesn't seem like there is enough room for this switch where they put their relay. Is there?
Plenty of room. The old relay was 4" x 3" x 3", so the Cole Hersee #48521 is no taller and 2" bigger front to back and 2" bigger top to bottom. Plenty of space for that.

LB_3 posted another brand of solid state relay earlier in this thread (WayTek 44403) that was slightly smaller but required a 16" x 16" (!) aluminum backing plate, which might not fit.
__________________

__________________
coder is offline   Reply With Quote
Old 05-14-2016, 02:50 PM   #72
2 Rivet Member
 
2014 Interstate Ext. Coach
Monroe , Washington
Join Date: Aug 2012
Posts: 60
Quote:
Originally Posted by amirm View Post
Agree on heat. As they saying goes, you can send someone to moon on 5 watt . Wasting this much energy is just wrong.
The 200F heat was not from the spec'ed 5W operating power. The user earlier in this thread measured 5V output from the relay with 12V input, after the relay had failed (with the "No Comm" symptom). 7V drop, however it failed inside, I'm not surprised it "warms" up.
__________________

__________________
coder is offline   Reply With Quote
Old 05-14-2016, 04:09 PM   #73
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 2,262
Quote:
Originally Posted by coder View Post
P.S. And before anyone complains that I didn't warn everyone on the forums that SB-164 was a potential fire hazard, I communicated my concerns about SB-164 directly to Airstream.

Thanks coder - you were the one that first advised us of the problem with SB164 and I appreciate your help. It would appear that Airstream isn't listening.


- - Mike
2013 Lounge EXT on 2012 Sprinter
__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 is offline   Reply With Quote
Old 05-31-2016, 08:15 PM   #74
Rivet Master
 
2016 Interstate Grand Tour Ext
Bellevue , Washington
Join Date: May 2016
Posts: 567
FYI I measured the current consumption of the current relay with my clamp meter and it clocked at 0.55 amps. It was cooking even though that is lower than rated consumption. You could not touch it as it would burn your hand .

I have the solid state relay mentioned earlier and the Magnum DCLD. Will report what I find with these tweaks.

One way or the other, this relay got to go!
__________________
amirm is offline   Reply With Quote
Old 05-31-2016, 08:47 PM   #75
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 2,262
Quote:
Originally Posted by amirm View Post
FYI I measured the current consumption of the current relay with my clamp meter and it clocked at 0.55 amps. It was cooking even though that is lower than rated consumption. You could not touch it as it would burn your hand .

I have the solid state relay mentioned earlier and the Magnum DCLD. Will report what I find with these tweaks.

One way or the other, this relay got to go!
Josh - that more than doubles the normal parasitic drain on an Interstate. Not good if you try to dry camp somewhere for a day or two.

I just ordered a Magnum DCLD so I'd be interested in your report.
__________________
Boxster1971 is offline   Reply With Quote
Old 05-31-2016, 09:33 PM   #76
4 Rivet Member
 
2016 Interstate Grand Tour Ext
Houston , Texas
Join Date: Oct 2015
Posts: 260
Check out http://www.airforums.com/forums/f240...ml#post1799930
__________________
Mcrider is offline   Reply With Quote
Old 05-31-2016, 10:57 PM   #77
Rivet Master
 
2016 Interstate Grand Tour Ext
Bellevue , Washington
Join Date: May 2016
Posts: 567
Quote:
Originally Posted by Mcrider View Post
Excellent! I will probably try this first before messing with the relay.
__________________
amirm is offline   Reply With Quote
Old 05-31-2016, 11:26 PM   #78
Rivet Master
 
2006 22' Interstate
League City , Texas
Join Date: Jan 2015
Posts: 505
Quote:
Originally Posted by amirm View Post
FYI I measured the current consumption of the current relay with my clamp meter and it clocked at 0.55 amps. It was cooking even though that is lower than rated consumption. You could not touch it as it would burn your hand .

I have the solid state relay mentioned earlier and the Magnum DCLD. Will report what I find with these tweaks.

One way or the other, this relay got to go!
I hope The DCLD does the trick since the easiest solution is to just turn off the inverter when it isn't in use.

If you have to use the solid state relay, it will have a parasitic draw much much lower than the relay coil. If I remember the spec sheet properly, it should only be dissipating about 20 watts when you are running the microwave off the inverter (~90A) which beats 7-8 watts all day and night.
__________________
LB_3 is offline   Reply With Quote
Old 05-31-2016, 11:51 PM   #79
Rivet Master
 
2016 Interstate Grand Tour Ext
Bellevue , Washington
Join Date: May 2016
Posts: 567
Quote:
Originally Posted by LB_3 View Post
I hope The DCLD does the trick since the easiest solution is to just turn off the inverter when it isn't in use.
Me too . Mine will arrive in a week or so and then I can test.

Quote:
If you have to use the solid state relay, it will have a parasitic draw much much lower than the relay coil. If I remember the spec sheet properly, it should only be dissipating about 20 watts when you are running the microwave off the inverter (~90A) which beats 7-8 watts all day and night.
I looked everywhere but could not find the DC on resistance. That loss worries me some. The FET switches should have low resistance but that large heatsink tells me it will draw some power. Did you see that spec on their sheet and somehow I missed it?

Right now I am running on stock system and the Micro is not on the inverter.
__________________
amirm is offline   Reply With Quote
Old 06-02-2016, 07:42 AM   #80
4 Rivet Member
 
2016 Interstate Grand Tour Ext
Houston , Texas
Join Date: Oct 2015
Posts: 260
If your unit has the Magnum battery temperature sensor make sure you get the "6" conductor coupler as instructed in the installation guide. Otherwise it will not work. I had to do some running around to find a coupler with all "6" conductors
__________________
Mcrider is offline   Reply With Quote
Old 06-02-2016, 08:25 AM   #81
Rivet Master
 
2006 22' Interstate
League City , Texas
Join Date: Jan 2015
Posts: 505
Quote:
Originally Posted by amirm View Post
Me too . Mine will arrive in a week or so and then I can test.


I looked everywhere but could not find the DC on resistance. That loss worries me some. The FET switches should have low resistance but that large heatsink tells me it will draw some power. Did you see that spec on their sheet and somehow I missed it?

Right now I am running on stock system and the Micro is not on the inverter.
If I remember correctly the ON current draw is maybe 60 miliamps and the resistance is about .0023 ohms. (Based on the published voltage drop at 150A.) The resistance only becomes an issue with the inverter maxed when the microwave is in use but that isn't the kind of thing that runs for hours at a time.
__________________
LB_3 is offline   Reply With Quote
Old 06-02-2016, 11:23 PM   #82
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,279
Quote:
Originally Posted by Mcrider View Post
If your unit has the Magnum battery temperature sensor make sure you get the "6" conductor coupler as instructed in the installation guide. Otherwise it will not work. I had to do some running around to find a coupler with all "6" conductors
Where did you get the spec. for a 6 conductor coupler? All of Magnum's cables, whether for the temperature sensors, network communication cables or data cables from the inverters to the remotes use 4 conductor cables with 4 conductor RJ-11 plugs at the terminations. I shorten these cables on a daily basis and have never seen Magnum use a 6 conductor cable or termination plug.
__________________
Lew Farber...ABYC Certified Master Marine Electrician...RVIA Certified Master Tech ...AM Solar Authorized Installation Center...AIRSTREAM Solar & Electrical Specialist...Micro Air 'Easy Start' Sales and Installations
lewster is offline   Reply With Quote
Old 06-03-2016, 07:25 AM   #83
4 Rivet Member
 
2016 Interstate Grand Tour Ext
Houston , Texas
Join Date: Oct 2015
Posts: 260
Quote:
Originally Posted by lewster View Post
Where did you get the spec. for a 6 conductor coupler? All of Magnum's cables, whether for the temperature sensors, network communication cables or data cables from the inverters to the remotes use 4 conductor cables with 4 conductor RJ-11 plugs at the terminations. I shorten these cables on a daily basis and have never seen Magnum use a 6 conductor cable or termination plug.


The DC Disconnect cable is 6 conductor and the instruction manual that came with it emphasis the coupler to be 6 conductor. You are correct on the temp sensor and remote being four conductor.
__________________
Mcrider is offline   Reply With Quote
Old 06-03-2016, 09:44 AM   #84
2 Rivet Member
 
LoveToWander's Avatar

 
2016 Interstate Grand Tour Ext
Seattle , Washington
Join Date: Nov 2015
Posts: 39
Mm-dcld

The control signal for the MM-DCLD is 12VDC/OPEN. Magnum is probably using one of the two, usually not present, outside conductors in the 6-conductor jacks/plugs. I found the 6-conductor splitter on Amazon for about $5.

I have to wonder why Airstream took the nuclear option of a relay that needs to conduct ALL of the current to the inverter as opposed to using the MM-DCLD to turn it on and off. Does anyone have any insight into that?
__________________

__________________
2016 Interstate GT Twin
LoveToWander is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dometic Service bulletin lewster Electrical - Systems, Generators, Batteries & Solar 8 08-11-2015 09:59 AM
Tacoma--upgrading suspension/Technical Service Bulletin work? Belbein Tow Vehicles 4 03-10-2014 11:54 AM
Dometic Refrigerator Service Bulletin TomW 1967 Overlander 5 10-31-2010 06:26 PM
Service Bulletin: #131, Chassis frame rail bracing MyParadise 2002 - 2005 International 6 08-18-2009 05:58 PM
Service Bulletin #29 upallnight Repairing/Replacing Floor &/or Frame 9 05-12-2004 11:08 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:45 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.