CGAD-SVN02C-EN
80
Troubleshooting
Note: These troubleshooting procedures apply to the CGAD Standard units. Troubleshooting with optional components should be checked
with the Technical Assistance Department at Trane do Brasil.
Sympt oms
P ossibl e C ause
P roc edure
1. Oil level is too low.
1. Insufficient charge of oil.
1. Add a quantity of oil to the
compressor that is sufficient for it.
2. Oil level falls gradually.
2. The filter dryer is plugged.
2. Replace the dryer filter.
3. Suction is too cold.
3. Bulb of the expansion valve is
loose (poor thermal contact).
3. Make sure that there is a good
contact between the remote bulb
and the suction line.
4. Same and the compressor is
making a lot of noise.
4. Flood back into the compressor.
4. Readjust the superheat,
subcooling, or check the contact of
the remote bulb on the expansion
valve.
5. The starts and stops are too
frequent.
5. The compressor turns on and off
too frequently.
5. See the problems listed in
problem B.
Sympt oms
P ossibl e C ause
P roc edure
1. Rattling noise.
1. Lack of oil.
1. Add oil.
2. Loud noise.
2. Internal parts of the compressor
are broken.
2. Change the compressor.
3. Suction line is too cold.
3. Flood back into the compressor.
3. Check and adjust the superheat.
The valve may be too large or the
remote bulb may be loose on the
suction line.
4. The suction line is extremely cold.
The compressor pings.
4. Expansion valve is stuck in the
open position.
4. Fix it or replace it.
E. C OMP RESSOR OIL LEV EL IS TOO LOW
F. C OMP RESSOR IS MA K ING TOO MUC H NOISE
Sympt oms
P ossibl e C ause
P roc edure
1. Expansion valve squeaks.
1. Bubbles in the liquid line.
1. Add refrigerant.
2. Change of temperature in the
refrigerant line through the dryer
filter or the key lock solenoid valve.
2. The filter dryer or the key lock
solenoid valve is plugged.
2. Clean or replace.
3. Short cycle.
3. Expansion valve is stuck or
clogged.
3. Fix or replace the expansion valve.
4. Superheat is too high.
4. The pressure drop in the
evaporator is too much.
4. Check the superheat and readjust
the expansion valve.
5. Insufflation temperature is too
high or too low.
5. Superheat is inadequate.
5. Check the superheat. Adjust the
expansion valve.
6. The air flow is reduced. The
evaporating temperature is below
zero.
6. Air filters are clogged.
6. Clean or replace.
G. SY STEM SH OWS A P OOR P ERFORMANC E
Summary of Contents for CGAD020
Page 36: ...CGAD SVN02C EN 36 Wiring Diagram Fig 17 Power and command wiring diagram CGAD 020C Sheet 1 2...
Page 52: ...CGAD SVN02C EN 52 Wiring Diagram Fig 33 Power and command wiring diagram CGAD 070C Sheet 1 2...
Page 60: ...CGAD SVN02C EN 60 Wiring Diagram Fig 41 Power and command wiring diagram CGAD100 Part I...
Page 61: ...CGAD SVN02C EN 61 Wiring Diagram Fig 42 Power and command wiring diagram CGAD100 Part II...
Page 62: ...CGAD SVN02C EN 62 Wiring Diagram Fig 43 Power and command wiring diagram CGAD100 Part III...
Page 63: ...CGAD SVN02C EN 63 Wiring Diagram Fig 44 Layout diagram CGAD100...
Page 64: ...CGAD SVN02C EN 64 Wiring Diagram Fig 45 Power and command wiring diagram CGAD120 Part I...
Page 65: ...CGAD SVN02C EN 65 Wiring Diagram Fig 46 Power and command wiring diagram CGAD120 Part II...
Page 66: ...CGAD SVN02C EN 66 Wiring Diagram Fig 47 Power and command wiring diagram CGAD 120 Part III...
Page 67: ...CGAD SVN02C EN 67 Wiring Diagram Fig 48 Layout diagram CGAD 120...
Page 68: ...CGAD SVN02C EN 68 Wiring Diagram Fig 49 Power and command wiring diagram CGAD150 Part I...
Page 69: ...CGAD SVN02C EN 69 Wiring Diagram Fig 50 Power and command wiring diagram CGAD150 Part II...
Page 70: ...CGAD SVN02C EN 70 Wiring Diagram Fig 51 Power and command wiring diagram CGAD150 Part III...
Page 71: ...CGAD SVN02C EN 71 Fig 52 Layout diagram CGAD150 Wiring Diagram...
Page 72: ...CGAD SVN02C EN 72 Wiring Diagram Fig 53 Layout diagram CGAD 100 125 150 with optionals...
