Parker PTM Series, User Manual

Page: 12 / 36

PTM200 - PTM1000 USER GUIDE
Page 12 - Rev D
8. Troubleshooting / Service
Fault
Code
Description Cause Remedy
A1 Low dewpoint
temperature 1) Ambient temperature is below 35
°
F (.6
°
C)
2) Inlet air temperature is below 35
°
F (1.6
°
C)
3) Water / glycol too cold
1) Install dryer in warmer area
2) Raise inlet temperature.
3) see “A5” Fault code
A2 Dryer
Overload Excessive thermal load on dryer Reduce compressed air quantity
and/or inlet temperature
A3 Low
refrigerant
pressure 1) Refrigerant leak
2) Low pressure switch defective
3) Water/glycol pump stopped/defective 1) Locate leak. Repair & recharge.
2) Replace
3) Check pump, wiring. Replace
if defective
A4 High
refrigerant
discharge 1) Condenser dirty / blocked
2) Fan pressure switch defective
3) Fan motor does not work/defective
4) Ambient temperature above 115
°
F (46
°
C)
5) High pressure switch defective
1) Clean condenser
2) Replace
3) Replace motor
4) Improve room ventilation
5) Replace
A5 Water/glycol
below 30*F 1) Compressor contactor welded closed
2) Control board defective 1) Replace
2) Replace
**CP Compressor
protection 1) Leak in water/glycol loop
2) Excessive inlet temperature 1) Repair leak and refill tank with
30% water/glycol mixture
2) Reduce temperature. Inspect
aftercooler upstream.
dr Drain not
working 1) Valve strainer clogged
2) Drain valve clogged
3) Solenoid defective
4) Drain sensor defective 1) Clean
2) Dis-assemble and clean.
3) Replace
4) Replace
F0 Open dewpoint
sensor 1) Loose connection
2) Break in sensor line 1) Check connections / tighten
2) Replace sensor
F1 Short in dew-
point sensor 1) Defective sensor
2) Sensor expose to 4
°
F (-14.5
°
C) or less
1) Replace
2) Increase temperature
F2 Open water/gly-
col temperature
sensor 1) Loose connection
2) Break in sensor line 1) Check connections / tighten
2) Replace sensor
F3 Short in water/
glycol sensor 1) Defective sensor
2) Sensor expose to 4
°
F (-14.5
°
C) or less
1) Replace
2) Increase temperature.