MacDon M205 Operators Manual User Manual
Page 442
Symptom
Problem
Solution
Section
Compressor clutch slipping
Remove clutch assembly for service
or replacement.
Thermostat defective or
improperly adjusted
Replace thermostat.
Contact Dealer.
Clogged air filters
Remove air filters, and clean or
replace as necessary.
Cleaning Engine
Air Filter Primary
Element, page
324
and
Heater circuit is open
Close temperature control in cab,
and valve on engine).
3.10.3 Climate
Controls, page 57
and
Insufficient air circulation over
condenser coil; fins clogged
with dirt or insects
Clean condenser.
Air Conditioning
Condenser, page
311
Evaporator fins clogged
Clean evaporator fins (under cab
floor).
Air Conditioning
Evaporator, page
311
Refrigerant low
Clogged expansion valve
Clogged receiver-drier
Excessive moisture in system
Air in system
Air conditioning
not producing
sufficient cooling.
(sufficient cooling
defined as when
air temperature
in cab, measured
at louvered vent,
can be maintained
at 25°F [14°C]
below ambient air
temperature.)
Blower motor sluggish in
operation
Contact Dealer.
Contact Dealer.
Unit icing up due to thermostat
adjusted too low
Adjust thermostat.
Unit icing up due to excessive
moisture in system
Unit icing up due to incorrect
super-heat adjustment in the
expansion valve
Thermostat defective
Defective blower switch or
blower motor
Partially open, improper
ground or loose connection in
compressor clutch coil
Air Conditioning
Cools
Intermittently
Compressor clutch slipping
Contact Dealer.
Contact Dealer.
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426
Revision A