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03-19-2019, 08:33 PM
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#15
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Senior Member
Join Date: Jan 2016
Posts: 2,186
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Since you have now told us that the A/Cs have separate thermostats that changes
things .
Its not likely that you have a thermostat problem since its got to be something that is
common to both units
I believe that is going to be a 12 volt or 120 volt issue .
Running a few minutes then cutting off then back on again sounds like an auto
resetting circuit breaker .
If you turn on just the fan only do they still cycle ?
I don't believe you have mentioned the shore power you are plugged into , could it
be low ?
Low voltage could cause the compressors to over heat and cut off .
Have you tried the generator to see if things change ?
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03-19-2019, 09:33 PM
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#16
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Senior Member
Join Date: Jun 2012
Location: NorCal
Posts: 3,000
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Have you checked your condenser fans, I doubt both units could have same problem but no fan will cause unit to kick off on high head pressure.
__________________
Outbound
2002 Monaco Executive 500 ISM
2004 GMC 2500HD 4X4
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03-19-2019, 09:58 PM
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#17
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,920
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Quote:
Originally Posted by RamiDav
Since you have now told us that the A/Cs have separate thermostats that changes
things .
Its not likely that you have a thermostat problem since its got to be something that is
common to both units
I believe that is going to be a 12 volt or 120 volt issue .
Running a few minutes then cutting off then back on again sounds like an auto
resetting circuit breaker .
If you turn on just the fan only do they still cycle ?
I don't believe you have mentioned the shore power you are plugged into , could it
be low ?
Low voltage could cause the compressors to over heat and cut off .
Have you tried the generator to see if things change ?
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I don't know of any breakers that reset, I think those would kill everything and the fans never shut off when I have them on low or high. I'm plugged and the volts on both legs are 118-119. There is one thermostat for iach unit and also seems to be a phone line going from one to the other...not sure.
I have attached a couple pictures, one of the front and one of the back ac. You will see one black RJ11 not connected to anything and never has and then you will see two RJ11 cables in the back connected to female couplers...not the right name.
And yes, this is all factory wiring as far as I know.
__________________
Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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03-20-2019, 05:32 AM
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#18
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Senior Member
Monaco Owners Club
Join Date: May 2012
Location: DFW, Tex-US
Posts: 6,196
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Ohhhh... black tape looks like there was some rewiring done there --- I'd call a repair shop good luck !
And my nephew is an AC guy and he says "ac's are ac's"
IF the AC guy will work on it...
__________________
'11 Monaco Diplomat 43DFT RR10R pushed by a '14 Jeep Wrangler JKU. History.. 5'ers: 13 Redwood 38gk(junk!), 11 MVP Destiny, Open Range TT, Winn LeSharo, C's, popups, vans, tents...
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03-20-2019, 10:48 PM
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#19
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Senior Member
Monaco Owners Club
Join Date: Sep 2007
Location: Scottsdale, AZ
Posts: 2,321
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The black tape was done at the factory, at least mine was. Don’t know what year they started doing such. Probably, they did not want the wire nuts to unscrew.
__________________
Harry
2008 Monaco Camelot 40' PDQ
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03-21-2019, 06:39 AM
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#20
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,920
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Thanks again to everyone for your thoughts!!...It is some kind of communication error so it looks like I will be replacing the "phone" cables. It just seems unlikely they (both units) would have the same problem at the same time. Or do they have to communicate with each other. Again, I have two five button thermostats, one for each unit. They both should zone 1 and it can't be changed with the zone button.
__________________
Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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03-21-2019, 06:44 AM
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#21
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Senior Member
Join Date: Jan 2016
Posts: 2,186
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Quote:
Originally Posted by Timaz
I don't know of any breakers that reset, I think those would kill everything and the fans never shut off when I have them on low or high. I'm plugged and the volts on both legs are 118-119. There is one thermostat for iach unit and also seems to be a phone line going from one to the other...not sure.
I have attached a couple pictures, one of the front and one of the back ac. You will see one black RJ11 not connected to anything and never has and then you will see two RJ11 cables in the back connected to female couplers...not the right name.
And yes, this is all factory wiring as far as I know.
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Resetting breaker if you have one will probably be in the 12 volt fuses
In your original post you stated the fan will shut off .
Measure the voltages
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03-21-2019, 06:58 AM
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#22
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,920
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Quote:
Originally Posted by RamiDav
Resetting breaker if you have one will probably be in the 12 volt fuses
In your original post you stated the fan will shut off .
Measure the voltages
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Thank you, I will check out the 12 volt bay tonight. The fan were shutting off when I had them on Auto only.
__________________
Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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03-21-2019, 07:03 AM
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#23
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Senior Member
Join Date: Jan 2016
Posts: 2,186
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Those are not ordinary phone cables like you would buy at Walmart .
The wiring order is reversed from one end to the other .
If you have a manual it will show what I am saying .
As a test you can buy a long cable and reverse the wiring by cutting and
splicing the wires . Then use it to temporarily plug it in place of the suspected
cables .
Those little white square connectors are known to cause trouble so find some
of those or try switching them around and see if the problem changes .
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03-21-2019, 07:14 AM
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#24
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,920
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Quote:
Originally Posted by RamiDav
Those are not ordinary phone cables like you would buy at Walmart .
The wiring order is reversed from one end to the other .
If you have a manual it will show what I am saying .
As a test you can buy a long cable and reverse the wiring by cutting and
splicing the wires . Then use it to temporarily plug it in place of the suspected
cables .
Those little white square connectors are known to cause trouble so find some
of those or try switching them around and see if the problem changes .
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Thank you, I am going to change out the little white square connectors. And yes I have been told the "phone lines" are straight pass throughs and I will make one up hopefully this Saturday...just too damn busy... I'm glad the weather has cooled off about 10 degrees. Thanks again to everyone! I will post more questions or hopefully what the problem was.
__________________
Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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03-21-2019, 07:27 AM
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#25
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Senior Member
Monaco Owners Club
Join Date: Sep 2013
Posts: 2,501
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I plagiarized this, perhaps it will be of use;
Typically, Monaco ran the wiring from the front TStat to the center (if you have one ) and then the rear. NOW that is typical and this is Monaco. The TStat is a “switch leg” and gets its power (and its ability to communicate and control) from ONE of the AC units. SO, if you have a typical unit, the DC for the system along with the AC is run to the front AC. There is a phone line or data buss that runs from the front to the center to the rear. There is also a data line or buss or phone that runs to the TStat.
Each AC has a module (accessible from the top). There are TWO phone cords (male) that hang down into the inside. These wires are identical….and they are IN and OUT. AND they can be reversed and STILL work. That was so the installers could NOT make any misstates.
The DC is applied to the Module. Then one wire goes to the TStat. The other wire goes to the middle AC….where there is the same module…so the data path goes UP and back DOWN….and then is run to the rear. Since the rear is the REAR….there would be a SPARE wire. NOPE…if you have a remote sensor in the bedroom….then that is what is connected.
TYPICALLY….and you MAY have a NON-Typical problem, the issues are in the CONNECTORS. These are phone jacks. You need to unplug them and replug them. Sometimes spraying with contact cleaner. I carry spare “connectors”. These are called Dual Inline Phone connectors. Amazon sells them.
IF you lose a connection or have a faulty or intermittent, it will drive you crazy.
Turn OFF the Tstat…Remove the cover on all the AC’s from the inside. Clean and reconnect and ensure that you have GOOD connections.
NOW…after you mess with any connection or do any work or replace anything, you have to do a SYSTEM reset. With the TSTAT SLIDE SWITCH OFF….you hold the top and lower buttons (Mode and Zone) and turn on the TSTAT… You get some crazy symbol. (double FF). That resets the Tstat and also tells it to “do an electronic handshake” with all the modules and sensor and such.
THIS usually fixes it….The problem that we do NOT see too often is losing the FRONT one. BUT, it could just be a connection. If that does NOT fix it and you replace the connectors….SOME have actually used phone crimpers and put new MALE plugs on the wires.
In some RARE cases, Monaco would drive a staple or a nail and nick the wiring…..mega issues.
We have had few and I mean VERY few module failures. BUT, you can move a module from the rear to the front and see if the problem follows that.
Again….anytime you tinker or disconnect…you MUST reset the Tstat and reestablish the circuit.
__________________
2014 Newell 2020P 45'8" ISX 600 HP
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03-21-2019, 10:32 AM
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#26
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,920
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Does anyone have a pdf manual for model # 630215.321? it should be 1999-2000 if it matters.
__________________
Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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03-21-2019, 12:07 PM
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#27
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Senior Member
Join Date: Jan 2016
Posts: 2,186
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Quote:
Originally Posted by Timaz
Does anyone have a pdf manual for model # 630215.321? it should be 1999-2000 if it matters.
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Check here Service Documents and Manuals
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03-25-2019, 06:06 PM
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#28
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,920
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Closing Update
Because most all posts pointed to the connectors as most likely, a good friend of mine and I cleaned all the connectors (including on the units). Through multiple resets I still had sporadic operation. After some thought, rather then replacing the connectors we cut them off and butt spliced the wires. Correct order of course. My A/C now work as they should!!! That is a good thing in Phoenix.
I would like to thank everyone that replied with help. Thank You. See attached picture for fancy wiring diagram.
__________________
Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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