AC Clicks - nothing else

Start capacitor blown or fan shaft rusted/frozen.
Is this the first time you've used it this season? If so get on roof, remove cover and turn fan by hand. If it's frozen, grab fan shaft with vice-grips and break it free - then lubricate. I have to do this every spring.
If none of that is the issue then it's likely the hard start cap has failed.

Thanks! I also cannot get to the breaker box until I move the rig. I do remember having to replace the start capacitor once before, also. Appreciate you jogging my memory!

Ok Is it Local Control: or a wall stat>

If a wall thermostat then teh A/C has two power sources

12 volt, operats the T=-Stat and a relay

120 volt operates the blower and compressor

You are missing 120 volt

Check breaker, check screws in Brake box (All of them) to make sure they are tight UNPLUG FIRST from shore power and turn off Generator bef0re opening breaker panel to check screws.

NOTE: THis is a no-cost fix if that's the problem (Many RVers have a few screws loose, A #2 Square bit works well though a PHillips may do the job)

IF that's not it, the rest of the suspects cost money.

I have the same problem from time to time on my rear air conditioner. The first thing to try is setting the fan speed to high when you start it. Mine won't start turning if it's set to low speed.

The second thing to try is going on the roof, remove the air conditioner cover, and apply some oil on the blower motor bearings. I've done that with good success.

Dead, or rather, almost dead batteries? The AC uses 120Vac to run, but the controls are 12 volt.

As many have said the A/C runs on 120V but the relay (Clicker) on 12v

I will say again. Happened to me.. Turnes out I had a few screws loose. The screws that clamp the wires in the breaker box.. I tightened.

Many RVers have a few screws loose it seems.. And those are the very screws I am speaking of.


Went into a store yesterday and someone ask if they could help "I need to go nuts" "Well that's all over" "This kind (Holding up a 1/2 inch grade bolt 1 1/2 inch long fine thread) And he told me were they would be if the store had em.

Today I went to a different store.. I now have em

Got it - the breaker had flipped. Now to find out why that happened. Could be because it was set on 72 (forgot to run it up) and it has been in the 90s outside. Will check the connections and if it does it again, will call some professional help in!

On mine when the breakers start tripping the problem is USUALLY indicative of a need for cleaning.

ON Coleman you go up , Pull 4 Bolts off the top, lift the lid, and clean the condenser (outside)

On most other makes you remove a whole bunch of screws, lift the lid, then you have to open the condenser fan compartment and then you can see how clogged the condenser is. You may or may not need to remove the fan to clean.

(On my Advent Air. when the fan blew up we put a Coleman fan on so other than 10 screws v/s 4 bolts it cleans like a Colemanm, no need to open the inner cover)

Why does this happen?

Well with the condenser clogged system tempertures rise, and rise, and as they rise the head pressure on the compressor also rises, and eventually it gets so high the comnpressor is pulling too many amnps and CLICK goes the breaker.

I just cleaned both my A/C's.

wa8yxm wrote:
On mine when the breakers start tripping the problem is USUALLY indicative of a need for cleaning.

ON Coleman you go up , Pull 4 Bolts off the top, lift the lid, and clean the condenser (outside)

On most other makes you remove a whole bunch of screws, lift the lid, then you have to open the condenser fan compartment and then you can see how clogged the condenser is. You may or may not need to remove the fan to clean.

(On my Advent Air. when the fan blew up we put a Coleman fan on so other than 10 screws v/s 4 bolts it cleans like a Colemanm, no need to open the inner cover)

Why does this happen?

Well with the condenser clogged system tempertures rise, and rise, and as they rise the head pressure on the compressor also rises, and eventually it gets so high the comnpressor is pulling too many amnps and CLICK goes the breaker.

I just cleaned both my A/C's.

Excellent explanation I might need sometime in the future. Thanks for that!

Thanks.. It helps (Me at least when I type these things) that I've had it happen at least 3 times... The most recent last week. :)