Heating system malfunctions

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Cause
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A. Weak heat output.
  1. The air damper does not close completely.
  2. The heat exchanger is dirty or the supply lines are crushed.
  3. The heater control is changed or sagged.
  4. The supply and drain hoses of the heat exchanger are dirty or broken.
  1. Check cable tension; adjust the damper stroke, if necessary, remove foreign objects.
  2. Clean or replace the heat exchanger; check the supply lines.
  3. Adjust or hang again.
  4. Check and replace hoses if necessary.
B. The heating system fails while driving.
Loss of coolant (air in cooling system/heat exchanger). Watch the temperature indicator and if overheating stop immediately. Otherwise, trouble will arise in the engine or the cylinder head gasket will be burned.







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