Furnace change on Escape 21 a shocker - Page 24 - Escape Trailer Owners Community

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Old 09-17-2015, 01:42 AM   #231
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Originally Posted by T&R View Post
When the thermostat calls for heat or when I have the wires jumpered there is a faint buzz from the furnace but nothing else.
That's nothing to do with propane. The start sequence for almost any furnace, and specifically for Atwood RV furnaces, is to run the combustion air blower for a little while to make sure the burner area is purged out, then turn on the ignition and fuel. Since these RV furnaces use one motor to drive both combustion air fan and room air fan, the noise is substantial and cannot be missed - if you are hearing only a faint buzz the fan is not turning as it needs to be.

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The manual posted on the forum (which BTW is far superior to the one you get with the trailer) talks about some control board with an LED that should flash if there is an error. Problem is I can't figure out how to get to it. There is seemingly no access to the inside of the unit except possibly through the ducting outside which I have not yet explored.
This furnace follows the typical layout of Atwood's RV furnaces. Most of them have the "working" bits (fan motor, burner assembly) against the trailer's outside wall (where you can get at them via an access door in the "standard door installation"), with the interior air ducts toward the interior of the trailer. This one has to mount in the same direction - to put the return air grill and heated air outlet in the interior in the "interior grill installation" - but that puts the "working" end buried in your interior cabinet (since it is not up against the wall and thus has no outside access door. Since the controller is normally beside the blower, just inside the access door, I have to wonder where it is in this one... buried at the far end of the case? Do you need to pull the whole thing out of the cabinet to work with it? It appears to be item #23 in the parts diagram... in the same place regardless of furnace version, accessible via the outside door in the normal installation, and hopelessly buried in this version.

I have three similar Atwood furnaces in other RVs, and I have had to read that status light. The difference is that I have outside access doors. I don't see how the small outside intake/exhaust grill of this installation could provide access to the controller board.

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Originally Posted by T&R View Post
To recap, I've experienced two types of failure. First time starting the unit the fan came on for about 30 seconds then shut down (I don't think it fired as there was no warm air). Second failure type is no fan & no fire. After both failure types the furnace makes a faint buzzing noise but nothing else when the thermostat calls for heat.
The first one could be a problem with propane, ignition, the airflow switch, or the controller. The second one is more specifically about driving the fan.
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Old 09-17-2015, 08:18 AM   #232
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It kinda sounds like the fan relay could be acting up. The buzzing sound could be the coil trying to engage the contacts, but not being successful.

I am not familiar with how RV furnaces are put together, more home furnaces, and not sure how easy it is to access or replace the relay (if in fact this is what it is). I would suggest that it be taken into a service shop, where they could likely assess the issue and correct it.
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Old 09-17-2015, 08:20 AM   #233
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If I recall, this is on the older 8012 model, there is a blinking led light inside the unit as well as a switch that must be turned on before the unit will operate, once the switch is pushed, normal operation resumes.
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Old 09-17-2015, 11:33 AM   #234
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The problem appears to be intermittent as it has worked normally a couple of times then nothing other times. There is a rocker switch on top of the unit in the back that as near as I can tell says Off and Reset. It is in the Reset position. I can't quite reach the switch from inside after taking the wood trim off or I would switch it off & back when the furnace dosnt work to see if that makes a difference. I'm sure I can find something long enough to reach the switch though if I try a little harder. I'm moving campgrounds today so may not spend much time on it.

Attached is a pic of the switch on top.
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Old 09-17-2015, 01:55 PM   #235
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Originally Posted by cpaharley2008 View Post
If I recall, this is on the older 8012 model, there is a blinking led light inside the unit as well as a switch that must be turned on before the unit will operate, once the switch is pushed, normal operation resumes.
Mine needed front panel off then you could get at control panel that was pointing away from you.
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Old 09-17-2015, 03:10 PM   #236
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We just received this news from Escape trailers. It is quite a shocker, because it means we give up 2 drawers. What do others who have ordered a 21 think. I expect Reace and Tammy have done their best to look for other suitable replacements of the same size.

Bob K
------------------------------------------
To Whom it May Concern,

Effective February 11, 2015 the furnace (Atwood Model #8012) we have been using is no longer available.

This furnace has been replaced with a new higher efficiency furnace (Atwood Model #AFSAD12). This new furnace is slightly larger and in the 21’ Escape we have had no other option but to relocate it to the 3 – drawer cabinet located on the driver’s side at the foot of the bed. By relocating the furnace to this cabinet we have had to delete the two center drawers as shown in the attached photo.

We apologize for any inconvenience this may cause.

Please feel free to forward any questions you may have.

Tammy Harmatuik, Business Manager
I was wondering if the heater could be moved to the bottom of the cabinet, and keep the three drawers.
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Old 09-17-2015, 03:17 PM   #237
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I was wondering if the heater could be moved to the bottom of the cabinet, and keep the three drawers.
The wheel well is in the way of doing that. Plus, there is a minimum distance to the floor, though not certain what that is.
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Old 09-17-2015, 04:44 PM   #238
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The wheel well is in the way of doing that. Plus, there is a minimum distance to the floor, though not certain what that is.
Thanks for the info.
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Old 09-18-2015, 01:04 AM   #239
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Originally Posted by Jim Bennett View Post
It kinda sounds like the fan relay could be acting up. The buzzing sound could be the coil trying to engage the contacts, but not being successful.
Jim's observation makes sense to me. I would need to check the manual, but I believe that the fan relay is on the controller board - there's at least one relay on there, and they tend to keep all of the electronics and electrical controls on one board.

Quote:
Originally Posted by Jim Bennett View Post
I am not familiar with how RV furnaces are put together, more home furnaces, and not sure how easy it is to access or replace the relay (if in fact this is what it is). I would suggest that it be taken into a service shop, where they could likely assess the issue and correct it.
RV furnaces are shoehorned into a small space, so access is usually an issue, and I don't find them a lot of fun to work on. If the furnace is still under warranty (and I assume that it is), repair work will likely need to be done by a repair business to be covered anyway, so this might be the point to engage someone. Even when someone else does the repair, I think it is good to understand the problem and likely cause.
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Old 09-18-2015, 10:03 AM   #240
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Quote:
Originally Posted by Bobbito View Post
We just received this news from Escape trailers. It is quite a shocker, because it means we give up 2 drawers. What do others who have ordered a 21 think. I expect Reace and Tammy have done their best to look for other suitable replacements of the same size.

Bob K
------------------------------------------
To Whom it May Concern,

Effective February 11, 2015 the furnace (Atwood Model #8012) we have been using is no longer available.

This furnace has been replaced with a new higher efficiency furnace (Atwood Model #AFSAD12). This new furnace is slightly larger and in the 21’ Escape we have had no other option but to relocate it to the 3 – drawer cabinet located on the driver’s side at the foot of the bed. By relocating the furnace to this cabinet we have had to delete the two center drawers as shown in the attached photo.

We apologize for any inconvenience this may cause.

Please feel free to forward any questions you may have.

Tammy Harmatuik, Business Manager
I am unable to find that model of furnace Atwood AFSAD12 on line. I would like to see it as I have a 21' on order.
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