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Diagnostics and repair of the car air-conditioner

Why does a car need climate control? It cools the air, removes unpleasant odors from the cabin, absorbs moisture. Because of an A/C malfunction the engine can overheat, fuel consumption rises, and condensate builds up.

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c. Kyiv

Auto Master — Locksmithing work

st. Garmatnaya, 3

+38 (096) 299 29 91

Daily with 08:00 - 20:00

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c. Kyiv

Auto Master — Body repair

Garmatnaya street 3

+38 (067) 490 28 78

Daily from 08:00 - 20:00

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c. Kyiv

Auto Master — Detailing

3 Garmatna St.

+38 (068) 299 29 91

Every day with 08:00 - 20:00

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When should you visit a service center to repair the car A/C

1. if oil spots appear on the compressor surface

2. unusual noise

3. the A/C runs at reduced power or cannot be turned on at all

4. the A/C has begun shutting off frequently and unexpectedly

5. condensation accumulates in the cabin after climate control is turned on

6. the compressor runs continuously

7. musty, moldy odor

8. insufficient refrigerant

9. a component of the A/C unit is faulty

10. icing of hoses, climate-system pipes or the filter

The causes may be:

1 dust collecting on the external radiator

2 contamination of the evaporator by deposits and debris

3 hoses rubbing against each other because of under-bonnet vibrations

4 oxidation of electrical components

5 late diagnostics that increase oil consumption so the compressor quickly fails from oil starvation

6 shortage of refrigerant because the vehicle was not taken to a workshop in time

Which A/C parts require repair:

Compressor
Condenser
Receiver-drier Evaporator

How we perform diagnostics and repair of car air-conditioners at the modern Auto Master service station

Any A/C repair starts with checking for refrigerant leaks. We inspect all hoses, the compressor and other system parts, and measure pressure. If we record zero pressure, we connect nitrogen and evaluate how the system responds to pressure levels.

Restoring A/C tightness

We begin by eliminating leaks. Small cracks in metal pipes are repaired with argon welding. If cracks are large or numerous, or if vibration has thinned the pipe walls, the A/C pipes must be replaced. We fit new rubber O-rings and recommend installing a new filter-drier at the same time.

Loss of tightness is the most common problem

Causes:

cracks appear in the metal pipes of the circuit
rubber seals can dry out
threaded joints work loose

The next step is to charge the car A/C with refrigerant

Once tightness has been restored to withstand high pressure, we fill the system with refrigerant. Before that we carry out vacuuming to remove moisture. If this step is skipped, all parts containing metal will oxidize, shortening their service life.

We always add the correct amount of oil to the refrigerant because the compressor relies on the circulating mixture.

Cleaning the evaporator and condenser

If dust collects on the inner plates of the evaporator it causes unpleasant odors. Over time microbes and even mold can appear in the cabin. In that case we remove the trim, take out the evaporator and clean its exterior with various disinfectant solutions.

The external condenser can also lose heat-transfer efficiency when clogged. The inside of the fins can become coated, reducing refrigerant circulation. A complete internal and external cleaning of the condenser solves this problem.

Compressor repair

Diagnostics of the A/C electronic system

This procedure is part of the comprehensive computer diagnostics. We monitor the sensors and check their serviceability

Contact the specialists at our Auto Master service center in Kyiv—we will run full diagnostics, carefully inspect every part and carry out the repair.

How to extend an air-conditioner’s service life

1. clean the A/C condenser of dust and dirt

2. charge only with the correct refrigerant

3. avoid overheating the body

4. periodically inspect the A/C for oil stains, dirt and mechanical damage

Our works

Diagnostics and repair of the car air-conditioner

Reviews

4.9

Average rating according to our customers

Dmitry

2024-05-28

I contacted them because the air conditioner stopped cooling in the summer. The technicians quickly performed diagnostics, found the cause – a freon leak – and performed the repair. After that, the air conditioner works perfectly, the car cools down quickly.

Artem

2024-06-01

The diagnostics and repair of the car air conditioner were performed professionally. After the work, the air conditioner works stably, there are no complaints.

Vlad

2024-05-16

The air conditioner stopped keeping the air cold, I decided to check it. The craftsmen showed me the problematic parts, explained the reason and made the repair. Now the air is cold as it should be, and without extraneous noises.

Dmitry

2024-05-28

Artem

2024-06-01

The diagnostics and repair of the car air conditioner were performed professionally. After the work, the air conditioner works stably, there are no complaints.

Vlad

2024-05-16

See other reviews

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