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M380 (Unique Issues) If you have a unique issue with your M380 model coach and it can't be answered in one of the other forums here, then this is where you can list it.....list your M380 Parts here too.

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  #1  
Old 07-24-2010
gkempse gkempse is offline
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Location: palm harbor fL
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Default house air conditioning issue

The unit cycles on and off every couple of minutes, in both unit 1 and unit 2.
unit 2 which is the bedroom cycles about every 30 seconds. The sensor in the bedroom is like a match head sticking out of the rear post on the passenger side. I have covered it with band aids, paper cups etc to try to make less sensitive but with no luck. I had bird at FV look at it and Parliament but I still have the issue. Is this just an M380 quirk or is there some secret adjustment that can be made to the thermostat or the roof units? Any input would be appreciated
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Palm Harbor FL
2004 M380 "Flying Scotsman"
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Old 07-24-2010
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The_Money_Pit The_Money_Pit is offline
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Quote:
Originally Posted by gkempse View Post
The unit cycles on and off every couple of minutes, in both unit 1 and unit 2.
unit 2 which is the bedroom cycles about every 30 seconds. The sensor in the bedroom is like a match head sticking out of the rear post on the passenger side. I have covered it with band aids, paper cups etc to try to make less sensitive but with no luck. I had bird at FV look at it and Parliament but I still have the issue. Is this just an M380 quirk or is there some secret adjustment that can be made to the thermostat or the roof units? Any input would be appreciated

1. what AC unit do you have?
2. what thermostat do you have?
3. what thermostat/temp control do you have?
4. are your airs tied to central thermo control unit?
5. do you have manual air without compressor option?
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  #3  
Old 07-24-2010
Doubledoc Doubledoc is offline
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Do you have a switch in the bathroom that says 'furance'? It is located on the multiplex pad to the left of the sink on the left lower side of pad. Our 450 LXI has one. It controls which set of sensors are used by the Comfort Control centers. When lit it uses senors in the living areas near the CCCs. when off it uses senors in each of the roof top units which causes those units to cycle very often without good cooling or heating.

We have found that everything works better with it on. That means webasto, Heat pumps and the ac's.
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  #4  
Old 07-25-2010
gkempse gkempse is offline
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The m380 has 2 Duo Therm roof air conditioners/heat pumps both rated at 15000 btus and controlled by a Duo Therm 2 zone thermostat in the dining room area there is a sensor in the bedroom which is the size of a match head in one of the pillers this sensor seems to be in the direct path of any cold air coming from the roof vent. The thermostat allows you to run air only which helps to mask the compressor coming on however the clunk and increased decibels tends to wake you up. I have electric heat and a control for the hurricane heater in the bathroom area and are tied into the heat pumps. I have checked the makers web site and the manuals and cannot find an adjustment that would allow either less sensitivity with the sensor or a longer dwell time between cycles. I have been living with it since I bought the coach in 04 but after reading all the incredible knowledge and experience on this forum I thought I would at least pose the question
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George Kempsell
Palm Harbor FL
2004 M380 "Flying Scotsman"
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Old 07-25-2010
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When I had my M380 I had the same issue. FV had no solution. I ended using a foam piece of a swim noodle and wedging in the air supply in the ceiling rear passenger side to stop the air from blowing directly on the sensor. It did help it a lot. Also the sensors that have a slotted cover you can place a piece of a cotton ball in side the cover over the sensor to help with short cycling due to air fow. I do not rem er if the units had pressure controls on them. Make sure your filter is clean!!
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  #6  
Old 07-25-2010
gkempse gkempse is offline
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The noodle solution make sense I will go to the pool store and implement
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Palm Harbor FL
2004 M380 "Flying Scotsman"
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  #7  
Old 04-23-2011
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Brent Brent is offline
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I have a different type of problem with my air conditioning. I have the thermostat set to Air Conditioning and have both Zone 1 and 2 turned on. The front air conditioner is blowing cold air as it should, the rear air conditioner will only blow hot air--the heat pump is running and it's hot. I've tried just running the rear air conditioner by itself and it just sends heat. Any ideas?
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Brent Frey
Lewisberry, PA
2003 M380
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  #8  
Old 04-23-2011
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Ed Wimberley Ed Wimberley is offline
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Brent

The heat pump units have a reversing sol valve,it's proably bad.
We got 4 from the "auction" all are missing the sol valve coil only
I think the coils burning out is a common problem.
Should be an easy fix.
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  #9  
Old 04-24-2011
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Randy Dupree Randy Dupree is offline
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On the thermostat you have to set the mode for each unit/zone.
I bet your rear air is set to "heat" mode.
I have to use a flashlight to see the readout when I'm setting the zones,i love wearing glasses.
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2000 LXI 43
Bainbridge,Ga.
Port St Joe Fl.
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  #10  
Old 04-24-2011
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Randy, I may have to look at that again. The thermostat seems a bit more complex than it should be. I'll get out my manual again and see if it's just my ignorance. This M380 brings new meaning to "live long learning". Thanks.
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2003 M380
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