Community Forums

heatherlea · 05-22-2011, 04:45 PM

We have only one unit installed. It shutdown in the middle of the night. tried running unit on gen power and shore line with negative results. checked breaker panel and the "optional A/C" breaker was tripped. I reset the breaker and the unit would still not run. Also verified that the Gen breaker was on. my question is....would the unit just shutdown or should their have been some warning signs? We just returned home from our trip so I havent had a chance o see if power is at the unit. Any info or troubleshooting assistance would help along with the cheapest place to purchace a Mach 15 system.

Thanks,
Shane

RV Wizard · 05-23-2011, 05:21 AM

Hello Shane and

. We are glad to have you join us here and we look forward to reading of your adventures and experiences. I am sure you will enjoy the website and forums. Good luck, stay safe and keep us posted.
Not always does a warning come from an appliance that has failed. If this is the original air conditioner, it is doubtful you want to put any money into repairing it. Due to the weight of these units, buying online and paying for shipping will negate any purchase savings. What part of the country are you located? Can you provide info on the thermostat you have or the model number of the unit as it may require a thermostat upgrade as well as a new roof unit.

Senior Chief · 05-23-2011, 05:50 AM

If you know how to use a meter, you might first check the forward/rear switch that selects between dual AC's (even though you only have one installed).

Or try climbing up on the roof, removing the cowl and seeing if the fan will turn freely and if you can see or hear anything obviously out of the ordinary.

Any good AC/heating/HVAC company will be able to diagnose and repair your unit- no need to take it to an RV repair.

It may be cheaper to replace rather than repair, but I'd wait until a technician actually diagnoses what is wrong.

heatherlea · 06-01-2011, 05:06 AM

Thanks for the replies. Trouble shot this issue to the circuit breaker tripping after the unit runs for a long period of time. . I was not familiar with the reset procedure. It felt loose and not latched in either position. Went full off and back on. Ac worked after that. Suspect circuit got hot and tripped the breaker. The unit was old and tired. We upgraded to a Mach 15 unit. Install was a breeze. All is well.
Thanks, Shane

heatherlea · 06-01-2011, 05:15 AM

It seems we are having bad luck with ac ! I have no power to the dash ac. I have checked all of the fuse boxes that I can see. Under drivers dash, battery center and power distribution box and don't see an ac fuse. The entire panel is out. No blower power or compressor power at all. The owners hand book makes no mention of the dash AC system nor does the fuse charts. I'm at a loss to where a fuse could be. There is a 10 amp in line fuse in the bundle coming from the panel but it checks good. We are sacheduled to leave for a trip on Friday. Any help with trobleshooting or where I can get a PDF of the wiring diagram (no time for mail) would greatly be appreciated.

Thanks, shane

RV Wizard · 06-02-2011, 02:51 AM

Quote:

Originally Posted by heatherlea

It seems we are having bad luck with ac ! I have no power to the dash ac. I have checked all of the fuse boxes that I can see. Under drivers dash, battery center and power distribution box and don't see an ac fuse. The entire panel is out. No blower power or compressor power at all. The owners hand book makes no mention of the dash AC system nor does the fuse charts. I'm at a loss to where a fuse could be. There is a 10 amp in line fuse in the bundle coming from the panel but it checks good. We are sacheduled to leave for a trip on Friday. Any help with trobleshooting or where I can get a PDF of the wiring diagram (no time for mail) would greatly be appreciated.

Thanks, shane

What chassis are you on? Look on the firewall for chassis fuse blocks. Also be sure to check the resistor pack on blower motor.

heatherlea · 06-06-2011, 03:01 PM

Ok guys....I believe I have the dash AC narrowed down to a 30 amp heater fuse. I don't have power on the main AC relay circuit. I changed the relay and checked all other circuits and fuses going through the main power relay and they were good. I am an aircraft technician and don't know what a 30 amp fuse would look like or where it would be located. My guess would be power distribution box. All fuses in both the Power distribution box under the hood and fuse box under dash are good and correctly populated as per the owners manual. The diagram makes it appear to be in line with the positive batt feed wire. This fleetwood southwind is on a ford chasis.

We made a trip this weekend with no AC and 6 kids on board I just can't pay 112 dollars an hour to pay a tech to finish this job I am buried in. I just need help finding the fuse and knowing what it might look like. The fleetwood tech agrees it looks in line but none of the positive leads have aditional wiring for a fuse. Leads me to believe that its in a box staring at me and I don't know what it looks like. The manual doesn't specifically call out an AC fuse. I figured ACC (accessery) and bodybuilder (manufaturr supplied power source?) Would be closest and they are all checking good. Also looks near water temp switch on the diagram but I don't know where that is either. New to RV world but I'm tryin like crazy to catch up. Thanks for the help!