Download Operating Manual - NY Tech Supply

Troubleshooting Tips
RECHARGING OPERATION
No power when Main Power switch is on—no display showing
Problem: Unit unplugged
Solution:Plug the unit into a power source
Problem: No power at wall outlet
Solution:Locate the problem with the outlet or change outlets
Audible tone sounds during refrigerant transfer
Problem: Transfer stopped or too slow
Solution:Start the A/C system and pull the remaining refrigerant into
system. See RECHARGING THE A/C SYSTEM or
Be sure the blue hose has access to the tank
Problem: Refrigerant supply empty
Solution:Add refrigerant to the tank
Problem: Blue LIQUID tank valve closed
Solution:Open the blue LIQUID tank valve
Refrigerant does not flow
Problem: Refrigerant supply empty
Solution:Add refrigerant to the tank
Problem: Flow restriction
Solution:Check all connections on the A/C system (the 17700A/17701A
should have adapters on both the low and high side fittings and
the couplers on the 34700/34701 should be open), or
Check the blue hose connection at the tank’s blue valve — be
sure it is getting access, or
Check the tank’s blue valve — it should be open, or
Be sure the A/C system has had a minimum of 15 minutes of
vacuum
Vacuum pump runs, but low side gauge does not register an
appropriate vacuum
Problem: Pump oil contaminated
Solution:Flush and change the vacuum pump oil
Problem: Charging line loose
Solution:Check connections
Problem: Manifold leaking
Solution:Check connections
Problem: Low side valve closed
Solution:Open low side valve
Problem: 3 /8” hose improperly connected to pump
Solution:Check connections
Series 17700A/17701A/34700/34701/34704 Enviro-Charge Units
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