MAHLE RTI TX200-UNDP - Manual (Page 14)

Page 13
PROBLEMS & SOLUTIONS
On rare occasion the TX200 may seem to be performing differently or not at all. Experience has shown that
varying operating conditions can affect the performance characteristics of the TX200. The temperature of the
vehicle A/C System will affect how the TX200 performs.
Following are typical problems with explanations of the possible cause and solution.
PROBLEM: My TX200 was recovering refrigerant and the Compressor On light went OFF which indicates
the A/C System should be in a vacuum. However, the Manifold Gauge still shows a pressure.
SOLUTION Determine if the Condenser Cooling Fan is still running. The fan can be heard and air flow
through the TX200 can be felt. If the fan is running, the high pressure switch has shut the
TX200 off due to an over-pressure condition.
Turn the Power Switch OFF and then ON. The condition may correct itself.
This over-pressure will typically be due to excessive pressure in the External Cylinder caused
by Non-condensable Gas (Air). Check the pressure in the ERC and vent until the pressure is
equal to Saturation Pressure at the Ambient Temperature.
PROBLEM: My TX200 worked fine all last Summer. I got it out today for the first service job this Spring
and it is very slow in evacuating the system.
SOLUTION: Today's Spring temperature may be much lower than the average temperatures during the
summer months.
The refrigerant in the A/C System will not be under as high a pressure at lower temperatures and
the TX200 will take longer to draw a vacuum. More cycles may be required to completely
recover the refrigerant.
PROBLEM: I can not get the TX200 to draw a vacuum.
SOLUTION: Check Manifold Gauge and Hoses for restrictions.
If the above suggested solutions do not solve the problem, call Supplier and one of our technicians will help
diagnose the cause. Please have the Serial Number available for reference.