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Rowdydog · 06-13-2006, 06:14 PM

Correction on the 1997 Winnebago Adventurer Chassis Air conditioning problem. I should have stated that the air conditioner unit comes on and blows cold air for about 10 min. than shuts down completly. No air at all, warm or cold. Any suggestions as to what the problem is would be appreciated. Thanks

Rowdydog · 06-13-2006, 06:14 PM

Correction on the 1997 Winnebago Adventurer Chassis Air conditioning problem. I should have stated that the air conditioner unit comes on and blows cold air for about 10 min. than shuts down completly. No air at all, warm or cold. Any suggestions as to what the problem is would be appreciated. Thanks

troth · 06-14-2006, 06:27 AM

Rowdy, you didn't say, but I get the impression that this issue happens repeatedly. i.e.- you could go out in the coach today and the dash A/C would work for about 10 minutes & shut down. Then you could go try it again tomorrow, and the same thing would occur... (?)
-sounds like something is "heating up" and cutting off your blower motor power. I'm thinking it could be your resistor pack or the fan relay. Both are found by opening up your front hood and looking on the passenger side of the coach at the mixing air box. It's my understanding that NAPA can test them both & supply replacements.

MrTransistor · 06-14-2006, 07:41 AM

Hi Rowdydog,
Perhaps the evaporator is frosting over completely. I believe this can happen if it's slightly low on Freon. (someone correct my thinking on this if I'm wrong) There may also be a frost switch that isn't working properly. If the evaporator frosts over completely, you would have no air flow. Do you live in a humid climate? When you stop, is there a goodly amount of water that drips from under the AC unit in the dash indicating lots of frost? When driving, can you turn the AC off for 10 minutes to melt the frost then when you turn it back on does it work again for 10 minuets? Let us know what you find.

Kazoo Tom · 06-14-2006, 05:25 PM

Rowdydog, there is also a thermal cut off relay in your system. If the system freezes up it will shut off the compressor until it thaws, then restart the compressor. However that should not affect the fan, air should still be flowing through the vents. If it is the fan that is shutting down, it may be a bad resistor coil, high speed fan relay, or both. There is also a chance that you are low on coolant (Freon) which will also shut down the compressor.

Please give us a bit more information and a better description of exactly what is happening. I had a previous problem with mine. The fan was not running at all speeds. Replaced the resistor pack and high speed relay and all is well with the fan now. Easy fix, less than $30 in parts.