Troubleshooting – Robinair 178012K Recovery, Recycling, Recharging Unit User Manual
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Model 178002K/178012K Recovery/Recycling/Recharging Unit
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Troubleshooting
Problem:
Tank valves are closed
Solution:
Open both valves and be sure hoses are properly
connected to the tank and the unit
EVACUATION OPERATION
Vacuum pump will not start
Problem:
Vacuum pump is unplugged from unit
Solution:
Plug the pump into a power source
Problem:
Power cord is not plugged in or there is no power at plug
Solution:
Check circuit for power
Problem:
The pressure in the A/C-R system is too high
Solution:
Recover the remaining A/C-R system charge
Problem:
“U-HI” message on digital display
Solution:
Recover all refrigerant before pulling a vacuum
Problem:
Vacuum time not entered
Solution:
Program the required time for vacuum
Vacuum pump runs but low side gauge does not register an
appropriate vacuum
Problem:
Low side valve is closed
Solution:
Open the low side valve
Problem:
Pump oil is contaminated
Solution:
Flush and change the vacuum pump oil
Problem:
Hose connection is loose or manifold is leaking
Solution:
Check connections
CLEARING OPERATION
“CLR” displays on screen
Problem:
Pressing HOLD/CONT does not clear the display
Solution:
Slide the lockout panel on the back of the unit to expose the fittings for the correct refrigerant
type, connect the appropriate hoses and perform a clearing procedure (see Step 12 in Set Up
Instructions)