This is a common problem of Robinair 34700Z / 347002K &
347112K series machine. So don't worry just do the following, with POWER SWITCH
OFF: - 1# Open front panel cover and verify the ISV tank is not overfilled. If full,
carefully remove refrigerant manually from ISV tank by pressing tank valve. 2# verify
if there is high pressure in the ISV tank. Purge excess air from the tank
manually. (Open air purge hose from the ISV tank, then carefully press tank
valve as needed to blow out excess pressure from the ISV tank) After doing all above stapes and your problem still exist then
replace air purge solenoid (Air purge solenoid located near the ISV tank and
fixed with automatic air purge device). Hope this will solve your problem, if
so please vote for it for farther help! Good luck
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