To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Need to contact us? Visit

ok here is the answer early

they had to wait till the outside ambient air got down below 98 with the extreme indoor temp. plus they were not smart enough to take cold water from an outside faucet to keep the head pressure down. Hey this really happened to a very large service company whose name I wont mention.HEY GUYS, IF YOU EVEER GET IN A POSITION WITH EXTREEM HIGH OUTDOOR TEMPS OF 95 DEGREES AND ABOVE ANND IDOORS TEMPS OF ABOVE 86 AND THEY UNIT JUST WILL NOT RUN LOOK AT YOUR PRESSURE CHART. THE HIGH LIMIT WILL KEEP YOU LOCKED OUT.




  • RJRJ Member Posts: 459
    high ambient

    I have run into situations in the past where I would use a water sprinkler next to condensing unit to lower the cond. temp until a could get the indoor heat load down
  • heatpro02920heatpro02920 Member Posts: 991
    edited April 2013
    I thought I put that in my

    answer Dave, 410a is not high ambient friendly.... If its super hot out, I spray them all down no matter what gas they use.. We don't see triple digits often, but changing coil conditions to affect pressures is day one stuff.... Its funny to watch the customers face while you hold there garbage can cover over their fan, it works both ways..
This discussion has been closed.


It looks like you're new here. If you want to get involved, click one of these buttons!