Valeo TM31, Руководство по обслуживанию

Страница: 24 / 47

- 22 -
Issue Symptom Possible cause Measure
A
B
C
1. Insufficient cooling capacity
Compressor is
not running
(No cool blow
coming out)
The magnetic clutch slips or
does not engage when the
compressor runs
Magnetic clutch slips when
turning on the A/C switch
Low pressure cut switch
operate (see p.24 - 25)
The magnetic clutch engages
but the armature does not
rotate
Belt run off the pulley
Center bolt is loose / Center
bolt is missing
Replace the compressor
Fix the refrigerant leakage
then fill with refrigerant until
reaching the right amount
Replace the lead wire if it is
defective
Replace the compressor if it
is locked
Replace magnetic clutch
Repair or replace the
magnetic clutch
Charge battery
Adjust air gap or replace
magnetic clutch
Replace the compressor or
the magnetic clutch
Compressor internal part
damage
Refrigerant shortage
Lead wire short circuit or
wiring connector not seated
properly
Magnetic clutch damage
Magnetic clutch air gap too
wide
Belt slipping
Bolt drop off/ Armature drop
off
Low magnetic clutch voltage
Compressor internal part
damage or magnetic clutch
damage
Compressor is
running
(No cool blow
coming out)
Replace the compressor
Fix the refrigerant leakage
then fill with refrigerant until
reaching the right amount
Charge the battery or replace
the magnetic clutch
Replace the magnetic
clutch after making sure it is
defective
Belt tension readjustment
Refrigerant shortage
Magnetic clutch friction
surface slipping
Loose connection of the
magnetic clutch electrical
circuit
Magnetic clutch belt slipping
The magnetic clutch slips or
does not engage when the
compressor is running
Compressor is running
normally
No difference of temperature
between discharge side and
suction side (see p.24 - 25)
Poor compression
Belt slipping
The magnetic clutch does
not engage
Defective sensor
Replace the sensor after
making sure it is defective
Compressor
runs
intermittently
(Cool blow
comes out only
from time to
time)
Reduce the refrigerant
charge until reaching the
right amount
Both discharge and suction
pressures are high
Excess of refrigerant
Replace the condenser after
making sure it is defective
Condenser fan failure
Replace the magnetic
clutch after making sure it is
defective
Loose connection of the
magnetic clutch electrical
circuit
The magnetic clutch slips or
does not engage when the
compressor is running
The magnetic clutch does
not engage
Defective sensor
Replace the sensor after
making sure it is defective
4- Troubleshooting