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Old 07-20-2015, 05:04 PM   #1
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Air conditioner problems

We just got back from a camping trip with 5 grandkids and our 38' Voltage toy hauler. We live in Texas so naturally the temperature right now is extremely hot. Our air conditioner in the bedroom worked great but the one in the "living room" just never seemed to cool things off much. The grandkids slept in the garage but were pretty miserable. The a/c was blowing air but not cold air. Overnight the trailer would cool down some but not enough to make a big difference. Does it sound like the a/c isn't working properly or is just the heat?
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Old 07-20-2015, 05:31 PM   #2
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Quote:
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We just got back from a camping trip with 5 grandkids and our 38' Voltage toy hauler. We live in Texas so naturally the temperature right now is extremely hot. Our air conditioner in the bedroom worked great but the one in the "living room" just never seemed to cool things off much. The grandkids slept in the garage but were pretty miserable. The a/c was blowing air but not cold air. Overnight the trailer would cool down some but not enough to make a big difference. Does it sound like the a/c isn't working properly or is just the heat?
Is the compressor running and do you know the temp of air coming out? A perfect use of a temp gun.
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Old 07-20-2015, 06:37 PM   #3
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The correct test for Air Conditioner operation is the temperature differential between the intake air and the cooled output air. The best is about 20 degrees.

Place a small food thermometer in the air intake vent for a few minuets. Remember the temperature. Place the same thermometer in the exhaust vent for a few minuets. Subtract the two readings.

Clean filters and a blowout of the coils usually help a lot.


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Old 07-20-2015, 06:47 PM   #4
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If you determine that the compressor is not running (temp differential) take a look at the capacitor(s). They are inexpensive and easy to replace.
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Old 07-20-2015, 08:20 PM   #5
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We didn't try testing the air input or output other than putting our hand up next to the vent inside. I'm not really sure that the compressor was running. We could hear the bedroom a/c compressor kicking in and out at night but can't say that we ever heard the living room compressor. We did wash the filters on both air conditioners hoping that would help. Even if there is a simple fix like the capacitors we are considering having an a/c mounted on the roof for the garage. The dealership we recently dealt with on some repairs said that a ballpark figure for that little add-on might be $1700. Kind of hate to spend that kind of money.
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Old 07-20-2015, 08:32 PM   #6
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May need to spend the $$ as some rigs just aren't very well insulated and need the add'l cooling, especially if not in the shade.
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Old 07-21-2015, 07:44 AM   #7
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There are several things that can cause poor cooling.

STEP ONE is clean the blanged thing.. Epically the condenser coils.

After that it costs money.
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Old 07-21-2015, 10:19 PM   #8
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We didn't try testing the air input or output other than putting our hand up next to the vent inside. I'm not really sure that the compressor was running. We could hear the bedroom a/c compressor kicking in and out at night but can't say that we ever heard the living room compressor. We did wash the filters on both air conditioners hoping that would help. Even if there is a simple fix like the capacitors we are considering having an a/c mounted on the roof for the garage. The dealership we recently dealt with on some repairs said that a ballpark figure for that little add-on might be $1700. Kind of hate to spend that kind of money.
Your new AC unit is around $800-900 the rest is labor. I would remove the plastic cover and see if the compressor is kicking on or not. If not I would replace the condensor first. If that fails you can replace the whole air conditioner cheaper than having another one installed. Unless you don't want to fix it.
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Old 07-24-2015, 08:18 AM   #9
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A technician found that the compressor is coming on and off but it's not cooling. Come to find out Dometic has had recalls on this unit so they're shipping a replacement to us out of Dallas. Once we get it installed we can see if the garage can be cooled enough with a living room unit that works properly.
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Old 07-24-2015, 08:13 PM   #10
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Harley Danny, what year is your Monaco? Just wondering they make and model of the Dometic.
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Old 07-25-2015, 07:54 AM   #11
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It's 2015 Voltage 3605. We sold our Monaco and bought the fifth wheel toy hauler. We got it last summer. I have no idea what model the Dometic is.
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