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9928487 R01 - 2018 RANGER XP 1000 Service Manual
© Copyright Polaris Industries Inc.
TROUBLESHOOTING - HVAC
BLOWER MOTOR DOES NOT OPERATE
SYMPTOM
POSSIBLE CAUSE
SOLUTION
1. Blown fuse
Inspect the fuse / wiring.
Replace fuse / repair wiring
2. Broken wiring / connection
Check the fan motor ground and connectors.
Repair the wiring or connector
3. Fan motor malfunction
Check the lead wires form the motor with a circuit
tester.
Replace Motor
4. Resistor malfunction
Check resistor using a circuit tester.
Replace Resistor
5. Fan switch malfunction
Check power into and out of the fan switch.
Replace Fan Switch
BLOWER MOTOR OPERATES NORMALLY BUT AIR FLOW IS INSUFFICIENT
SYMPTOM
POSSIBLE CAUSE
SOLUTION
1. Evaporator inlet obstruction
Check evaporator for plugging.
Remove obstruction and clean
evaporator fins
2. Air leak
Check to make sure air hoses are properly
hooked to Louvers, and air ducts.
Repair or adjust
3. Defective thermostat.
switch (frozen evaporator)
Check thermostat using a circuit tester.
Replace thermostat
4. Plugged cab filters
Check cab filter condition.
Clean or replace filters
INSUFFICIENT COOLING (AIR FLOW AND COMPRESSOR OPERATION ARE NORMAL)
SYMPTOM
POSSIBLE CAUSE
SOLUTION
1. System low on refrigerant.
The high side pressure will be low and bubbles
may be present in sight glass on receive drier.
Repair any leaks and
recharge the A/C system
2. Excessive refrigerant.
The high pressure side pressure will be high.
Recover and recharge system
to the correct refrigerant level.
COMPRESSOR DOES NOT OPERATE AT ALL OR OPERATES IMPROPERLY
SYMPTOM
POSSIBLE CAUSE
SOLUTION
1. Loose drive belt.
The belt is vibrating or oscillating.
Adjust tension.
2. Internal compressor
malfunction.
The compressor is locked up and the belt slips.
Replace compressor.
3. Low battery voltage.
Clutch slips.
Recharge the battery.
4. Faulty coil.
Clutch slips.
Replace the magnetic clutch.
5. Oil on the clutch surface.
Clutch slips.
Replace or clean the clutch
surface.
6. Open coil.
Clutch does not engage and there is no reading
when a circuit tester is connected between the coil
and terminals.
Replace clutch.
7. Broken wiring / poor
ground.
Clutch will not engage. Inspect the ground and
connections.
Repair.
8. Wiring harness
components.
Test the conductance of the pressure switch,
thermostat, Relay, etc.
Check operation.