SECTION 5
5-22
COOLING SYSTEM
PROBLEM POSSIBLE CAUSE CORRECTION
Compressor not working. Open circuit in compressor solenoid. Check power supply to the clutch.
Faulty thermostat. Replace thermostat.
Belt loose or broken. Adjust belt tension, replace belt.
Belt pulley not turning although
magnetic clutch is engaged.
Check compressor and replace, if
necessary.
Compressor clutch slipping. Repair clutch or replace compressor.
Evaporator flooded. Expansion valve jammed or stuck in
open position.
Replace expansion valve (block).
Evaporator frozen. Thermostat sensor in wrong position. Install sensor in another place.
Evaporator clogged up. Dirty fins. Clean evaporator.
Coolant leaking. Refrigerant line defective. Check all lines for defects caused by
external influences or chafing.
Leaks in the system. Evacuate the system, refill, check for
leaks and repair.
Air filter (recirculation). Panel filter clogged. Clean or replace the panel.
Air filter (recirculation). Filter element clogged. Clean or replace the filter element.
Heating operating. Tie rod for heating valve not set
correctly or faulty.
Set the tie rod or replace it.
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