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hotjag1
Lake Chelan, Wa/Lake Havasu, Az.
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Joined: 07/14/2002
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The engine a/c compressor doesn't kick on when activating the dash a/c button. There is no power to the wire that is connected to the compressor. I'm guessing that there is a blown fuse as it has worked fine until this spring. I have checked all fuse boxes and cannot locate the a/c fuse.
I called Tiffin and they said it was in the battery compartment. I found 4 inline connector fuses in that compartment, but they all looked good and they are not labeled as to what they are for.
Does anyone know where this a/c fuse might be on the DP in my signature?
hotjag1
2003 40' Allegro Bus, 3 slides, 400hp 8.9 liter ISL Cummins
2000 24' Dynamax Isata
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MountainAir05
New Mexico
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Ohm/voltage check across the fuse depending on if you have power on them. Also if you have low freon then you will not have power to the clutch. Sorry can't help you on location.
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Krusty
Calgary, Alberta,Canada
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I would check to make sure it is not low on refrigerant. Most common cause.
Krusty
92 F-250 4x4 460 5spd 4.10LS Prodigy
97 Rustler RT190
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dougrainer
Carrolton, Texas
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Krusty wrote:I would check to make sure it is not low on refrigerant. Most common cause.
This is the cause 99% of the time--- Low refrigerant Doug
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hotjag1
Lake Chelan, Wa/Lake Havasu, Az.
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Thanks for the replies. I did have an a/c shop check freon level and they said it was good. Still hoping someone has a suggestion as to where the fuse might be that I may have overlooked.
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Cincy Steve
45069
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Apples to oranges, but the fuse for our '14 American Revolution is in an inline holder, buried under the dash, near the evaporator assembly. Not an easy find, even after being told where to look....
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dougrainer
Carrolton, Texas
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hotjag1 wrote:Thanks for the replies. I did have an a/c shop check freon level and they said it was good. Still hoping someone has a suggestion as to where the fuse might be that I may have overlooked.
HOW could they possibly check the 134a level(volume) with NO COMPRESSOR RUNNING?
IMPOSSIBLE. So, don't ever use that shop. Doug
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Rick Jay
Greater Springfield area, MA
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dougrainer wrote:hotjag1 wrote:Thanks for the replies. I did have an a/c shop check freon level and they said it was good. Still hoping someone has a suggestion as to where the fuse might be that I may have overlooked.
HOW could they possibly check the 134a level(volume) with NO COMPRESSOR RUNNING?
IMPOSSIBLE. So, don't ever use that shop. Doug
Without knowing exactly what the "a/c shop" did, I tend to agree with Doug.
If they put gauges on it, they might be able to determine that there is SOME refrigerant still in the system, above atmospheric pressure, but without the compressor running, you can't really tell much.
I believe they could've measured the continuity of the low pressure switch and tried to make a determination from that as well. But again, without the compressor turning, I don't think that's reliable.
Now, they possibly could have jumped the low pressure switch, bypassing it, to see if the compressor came to life. (NOTE: Only do this momentarily as this could damage the compressor if allowed to run without proper oil circulating through the compressor.) If it did, THAT would indicate a likely possible low-refrigerant level. But if it didn't, that would most likely indicate the problem is elsewhere. If it did cause the compressor to work, then they probably would've offered to charge it for you.
Do you know exactly what the "a/c shop" did in their diagnosis? You can try jumping the low-pressure switch to see if that cause the compressor to kick in.
Good Luck,
~Rick
2005 Georgie Boy Cruise Master 3625 DS on a Workhorse W-22
Rick, Gail, 1 girl (26-Angel since 2008), 1 girl (21), 2 boys (22 & 19).
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hotjag1
Lake Chelan, Wa/Lake Havasu, Az.
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Cincy Steve wrote:Apples to oranges, but the fuse for our '14 American Revolution is in an inline holder, buried under the dash, near the evaporator assembly. Not an easy find, even after being told where to look....
There are several inline fuses under the dash. Rather than pay $165 an hour, I picked up the rv and told them I will continue to look for the a/c fuse. Thanks for the suggestion. I'll probably start checking all of them after the holiday.
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hotjag1
Lake Chelan, Wa/Lake Havasu, Az.
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Rick jay and Doug, thanks for the feedback about no compressor running.
This is a quote from the invoice.
"Checked A/C. Recovered system. Was about a pound low. Charged to 4.2 lbs. Test ran. Clutch is not engaging". I have no idea if they bypassed the low pressure switch.
Tiffins suggestion for fuse location was no help. I'm going to have to check every fuse that I can locate.
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