MacDon 9352 - Air conditioning not cooling

Form # 46584 Issue 11/06 Web Rev_01
117
TROUBLE SHOOTING
SYMPTOM
PROBLEM SOLUTION REF.
Cab Air System See page 112 for possible causes of abnormal high side / low side pressure.
Blower fan will not run. Burned out motor. Replace motor. *
Burned out switch. Replace switch. *
Motor shaft tight or
bearings worn.
Repair motor. *
Faulty wiring - loose or
broken.
Repair or replace wiring. *
Blower rotors in contact
with housing.
Replace rotors and/or
housing.
*
Blower fan operating but
no air coming into cab.
Dirty fresh air filter.
Evaporator clogged.
Clean filter.
Clean evaporator.
110
111
Air flow passage
blocked.
Remove blockage. ---
Heater not heating. Heater shut-off valve at
engine closed.
Open valve. 21
Defective thermostat in
engine water outlet
manifold.
Replace thermostat. *
Heater temperature
control defective.
Replace control. *
No thermostat in engine
water outlet manifold.
Install thermostat. *
Odour from air louvers. Plugged drainage hose. Blow out hose with
compressed air.
---
Dirty filters. Clean filters. 110, 111
Air conditioning not
cooling.
Low refrigerant level. Add refrigerant *
Switch contacts in
thermostat burned
excessively, or sensing
element defective.
Replace thermostat. *
Clutch coil or relay
burned out or
disconnected.
Check current flow to
clutch or relay. Replace
if inoperative.
*
Condenser fins plugged. Clean condenser. 79
Blower motor discon-
nected or burned out.
Check current flow to
blower motor. Repair or
replace if inoperative.
*
* See your Windrower Dealer.