Insufficient Heating - Geely EC718 2009 Workshop Manual

Heating, Ventilation and A/C System
Symptoms
Air-conditioning high
pressure too low, low
pressure too high
Air-conditioning high
pressure too low, low
pressure too low
Air-conditioning high
pressure too low, low
pressure close to
vacuum

8.2.7.9 Insufficient Heating

Fault Symptom Table
Symptoms
The engine coolant
temperature does not reach
82°C (180 ºF)
Warm and Cold Air Leakage
Suspected Malfunction Components
1. Lack of compressor oil
2. Compressor damaged
1. Insufficient refrigerant
2. Refrigerant Leakage
1. Seriously expansion valve blockage
2. Expansion valve blocked by ice
3. Evaporator temperature sensor malfunction
4. Low pressure pipe leakage
Suspected Malfunction Components
1. Thermostat Malfunction
2. The engine running time is not long
enough.
3. Air entering the cooling system
4. Poor engine working conditions.
1. Throttle body heating and cooling
mechanical malfunction
2. Warm and cold air motor malfunction
3. Air duct leakage
4. Air-conditioning control module
malfunction
Automatic Air-conditioning
Repair Procedure
1. Add compressor refrigerant lubricant.
2. Replace the compressor.
1. Fill refrigerant according to Geely standard.
2. Inspect the air-conditioning systems leakage,
replace the leaking air-conditioning system
components.
1. Replace the expansion valve.
2. Extend the system vacuuming time, fill air-
conditioning refrigerant according to Geely
standard.
3. Replace the reservoir dryer.
4. Replace the evaporator temperature sensor.
5. Clean or replace blocked low pressure pipes.
Repair Procedure
1. Extend the engine running time.
2. Bleed the air in the cooling system.
3. Replace the thermostat.
4. Inspect the engine working conditions.
1. Adjust the throttle body heating and cooling
mechanism.
2. Replace the heating and cooling regulation motor.
3. Replace the throttle body heating and cooling
mechanism.
4. Repair the leaking air duct.
5. Replace the leaking air duct.
6. Replace the air-conditioning control module.
EC718/EC718RV EC715/EC715RV 10/2009
8-37