TEKTINO
AC-200-dual USER MANUAL V2.30
13/14
Main troubleshooting
Malfunction
Reasons
Solution
Low vacuum degree
1. Insufficient vacuum pump oil.
2. Pump oil emulsion, dirty
3. Pump oil inlet plugged.
4. Leakage in pump connection.
5. Components worn out.
1. Add oil to central line
2. Put new oil
3. Clean oil inlet.
4. Check connection
5. Maintain the machine, especially o-ring,
washer and other sealing parts.
Vacuum pump inject
oil.
1. Excessive oil volume.
2. Entrance pressure too high.
1.Discharge some oil to proper level
2.Run Recovery function first.
No display
1. Fused (in Power cable connection
box, or PCA)
2. PCA burnt.
3. Power cable loosened.
4. LCD not work
1. Change fuses.
2. Change PCA.
3. Connect power cable reliably.
4. Change LCD.
Recovery does not
stop
1. Leakage in automotive A/C or
equipment pipeline.
2. Compressor not work
3.Pressure sensor does not work
Remarks: In winter, it is normal
that recovery takes longer time.
1. Make leakage test. Machine leakage test
with referenc to service manual.
2. Change compressor.
3. Fasten pressure sensor connection to
PCA, or change the pressure sensor.
No change in
recovery volume
1. No refrigerant in A/C.
2. Support screw of gas cylinder load
cell not loosened.
3.Gas cylinder load cell not work or
PCA failure
1. Stop recovery.
2. Unsrew the protection screw, as chapter
“Operation preparations”.
3. Calibrate gas cylinder load cell, or change
the load cell, or change PCA.
While auto A/C has
refrigerant,
equipment displays
alarm 005
Low pressure switch plug
disconnected from PCA socket.
Fasten low pressure switch plug.
High pressure alarm
004 but gas cylinder
gauge does not show
excessive pressure
value
1. High pressure switch plug
disconnected from PCA socket.
2. Pipeline connecting compressor
exit blocked.
1. Fasten high pressure switch plug.
2. Inspect the hoses and connections between
compressor exit and tank blue hand vale.
No charge or slow
charge.
1.Insufficient refrigerant in
equipment
2.Charge line problem.
1. Fill equipment tank with more refrigerant.
2..Check charge line, including tank red
valve, tank red hose, solenoid #5, solenoid
#9 (high side), solenoid #11 (long side),
service hoses and HP/LP quick couplers.
