TROUBLESHOOTING
* See your MacDon dealer
** Refer to Windrower Technical Manual
Form # 169017 208 Issue – June 2008
SYMPTOM PROBLEM SOLUTION SECTION
Air Conditioning Not Cooling.
(Continued)
Compressor shaft seal leaking.
Contact MacDon dealer.
*
Clogged screen in receiver-drier;
plugged hose or coil.
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.)
Compressor clutch slipping. Remove clutch assembly for
service or replacement.
**
Clogged air filters. Remove air filters and clean or
replace as necessary.
7.8.6.1 &
7.8.6.2
Heater circuit is open. Close heater valves (1 in cab, 1
at engine).
5.10.1.1
Too little air circulation over
condenser coil; fins clogged with dirt
or insects.
Clean condenser.
6.6.3.3
Evaporator fins clogged. Clean evaporator fins (under cab
floor).
7.8.6.4
Too little refrigerant in system.
Contact MacDon dealer.
*
Clogged expansion valve.
Clogged receiver-drier.
Excessive moisture in system.
Air in system.
Thermostat defective or improperly
adjusted.
Replace thermostat.
**
Blower motor sluggish in operation.
Contact MacDon dealer.
*
Air Conditioning System Too
Noisy.
Defective winding or improper
connection in compressor clutch coil
or relay.
Contact MacDon dealer.
*
Loose or excessively worn drive
belt.
Tighten or replace as required.
7.9.10.2
Noisy clutch. Remove clutch for service or
replacement as required.
**
Noisy compressor. Check mountings and repair.
Remove compressor for service
or replacement.
**
Compressor oil level low. Add SP-15 PAG refrigerant oil. **
Blower fan noisy due to excessive
wear.
Remove blower motor for service
or replacement as necessary.
**
Excessive charge in system.
Contact MacDon dealer.
*
Low charge in system.
Contact MacDon dealer.
*
Excessive moisture in system.
(continued next page)
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