MacDon M2170NT Operator's Manual page 468

Problem
Thermostat defective
Defective blower switch or
blower motor
Partially open, improper ground or
loose connection in compressor
clutch coil
Compressor clutch slipping
Symptom: Air conditioning system too noisy.
Defective winding or improper
connection in compressor clutch coil
or relay
Excessive charge in system
Low charge in system
Excessive moisture in system
Loose or excessively worn drive belt
Noisy clutch
Noisy compressor
Compressor oil level low
Blower fan noisy due to
excessive wear
Symptom: Cab windows fog up.
High humidity
262171
TROUBLESHOOTING
Solution
Contact Dealer.
Contact Dealer.
Contact Dealer.
Contact Dealer.
Contact Dealer.
Contact Dealer.
Contact Dealer.
Contact Dealer.
Tighten or replace as required.
Remove clutch for service or
replacement as required.
Check mountings and repair. Remove
compressor for service or
replacement.
Add SP-15 PAG refrigerant oil.
Remove blower motor for service or
replacement as necessary.
Run A/C to dehumidify air and heater
to control temperature.
448
Section
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Tensioning Air Conditioner Compressor
Belts, page 395 and Replacing Air
Conditioner Compressor Belts, page
395
Contact Dealer.
Contact Dealer.
Contact Dealer.
Contact Dealer.
3.10.3 Climate Controls, page 63
Revision A