Amadas 9980 - Air Conditioner

9980 Self-Propelled Peanut Combine Troubleshooting
Air Conditioner
PROBLEM CAUSE CORRECTION
Lack of or insufficient cooling.
Temperature control in OFF
position.
Select Air Conditioning
position.
Compressor belt off or broken. Replace belt.
Compressor not functioning (if
both the large and small
hoses in the left-hand access
panel are at the same
temperature).
See your AMADAS/John
Deere dealer.
High-pressure switch ON –
insufficient air flow across
condenser.
Clean condenser. Check fan
belt position. Check rotary
screen function. If this does
not correct problem, see
AMADAS/John Deere dealer.
Low-pressure switch ON –
insufficient air flow across
evaporator.
Clean filters. Check cab fan
operation. If this does not
correct problem, see your
AMADAS/John Deere dealer.
Low-pressure switch ON – low
outside air temperature.
Move temperature control to a
warmer setting.
Low-pressure switch ON –
insufficient refrigerant level.
See your AMADAS/John
Deere dealer.
Compressor clutch cycles
excessively or compressor
stays OOF up to 15 minutes.
Evaporator icing.
Adjust controls correctly. See
Chapter , Operator’s Station,
Open louvers. Clean filters.
Move control to a warmer
setting.
Bad smell (foul odor) in cab.
Plugged drain tube. Dirty
filters. Dirty cab.
Blow out condensate tube and
clean pan under evaporator.
Clean filters. Vacuum out
cab.
Be certain weep valve in
condensate drain tube is
installed.
MAN141 09/08/15 353