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LO PS on Mid Right Cruise Air
My mid right cruise air is showing fault code Lo PS. From the manual that means the suction pressure is below 30psi. From my automotive days that normally meant low freeon. Could that be the problem I’m in west Arizona heading to California. Also it was 122 degree’s here today could that have anything to do with it.
Bob
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8 Replies
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That would be correct, LO PS typically means that you are low on freon(R-22)
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Jeff do you think I can run on 3 units until I get to you in mid July or do you not work on the cruise air systems.
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You can as long as you can stay comfortable where you are….
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Jeff can definitely fix your problem!
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Bob, From a user’s point of view (and that of someone who likes cool temps) the location of the failed unit can determine how comfortable you will be.
Our coach can be comfortable with two units but I have to follow some needed practices. I keep the sun out to the extent possible so the shades are down or the awnings are out. The windshield is not double pane so unless I am driving I typically keep the privacy shades down. I hope they are a light color because if the privacy shades are black they will literally pump heat into the forward part of the coach when down, and in the sun.
During the day we usually only run two of the three forward AC units for the kitchen / living room area because that is where we will spend time. The BR will be warmer, but that’s OK. In the evening we typically drop back to one AC in the front and turn on the rear AC. The two most valuable AC units in our coach are the front and rear, but there are times when it makes sense to use only the two center ones.
Never allow the temps to rise. We have OTR so if I screw up and our coach is hot inside for some reason, I can use as many house AC units as I have, but nothing will cool the coach down as quickly and as well as running the bus air for 15 minutes or so. If you don ‘t have OTR is it important to stay well ahead of the heat.
Having only 3 AC units should not be a problem at all, but again it depends on location with the BR AC unit important for good sleeping, but if that has failed a small fan to get better circulation may be necessary until the AC unit is fixed.
Any AC repair man can recharge a unit. They just need access and they need to understand the units are very sensitive to the right charge. The most effective way to determine if the charge is right is to monitor the suction line temps at the condenser, and charge it until the temps stop dropping and begin to rise. If it becomes necessary to fix a unit before getting to Jeff you can get service, but most refrigeration techs don’t like working on conversions.
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Also make sure anyone that touches it uses R-22…have had others that have had service guys come out and try to put something else in….
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Bob
sorry to
hear you problem with A/C, I was also in AZ with temps in 115 both of front AC when to over pressure. I talked to Troy he give an idea, run a water hose on the concert area under the unit / units that are affected, if it is due to high pressure. Worked for me. We are in Williams for the night heading to Albuquerque NM.
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Thanks everyone for the reply we are now in California and temps are better. I am running just the three units until I get to Jeff’s. It has been cooling fine on three units even in Arizona heat.
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