Valtra 6850 - Page 1205

1148
Model Code Page
83. Air conditioner
1. 4. 1997
6000--8750 831 6
15. 6. 1992
Low pressure high High pressure normal
DS
Low pressure high High pressure low
DS
Low pressure normal High pressure high
DS
Possible fault Remedy
1. Expansion valve faulty.
Valve stuck fast in open
position.
2.Compressorfaultyorits
belt slackened.
3. Too little refrigerant in
system.
1. Empty system and
change expansion valve.
2. Check compressor belt.
Change damaged com-
pressor.
3. Empty and refill the sys-
tem with refrigerant (1,4
kg).
Possible fault Remedy
1. V alves or seals in com-
pressor faulty.
2. Too little refrigerant cau-
ses the high pressure rea-
ding to be too low.
1. Change compressor.
2. Empty and refill the sys-
tem with correct amount of
refrigerant (1,4 kg).
Possible fault Remedy
1.Airinsystemortoo
much refrigerant in system.
2. Condenser dirty (insects
etc)
3. If bubbles appear in
inspection glass fast filling
is OK, the drier hose con-
nections have been con-
nected faulty and refrige-
rant flows in reverse direc-
tion.
4. If there is bubbles and
icing in the drier, there is
restriction in the drier inlet
side.
1. Empty system and refill
with refrigerant (1,4 kg).
2. Clean the condenser.
3. Empty system and
change hose connections.
Change the drier. Refill sys-
tem (1,4 kg).
4. Empty system and
remove blockage and fit a
new drier. Refill system
(1,4 kg).