What services does Thiam Seng Electrical Aircond. provide?

We supply, install, and service air conditioners for homes, offices, and projects. We are authorized dealers for Panasonic, Haier, Midea, and Daikin. Services include chemical cleaning, normal maintenance, troubleshooting, dismantle, part replacement, and home appliance services.

Where is Thiam Seng Electrical Aircond. located?

We are located at No.2A-1, Jalan PJU 8/5B, Damansara Perdana, 47820 Petaling Jaya, Selangor, Malaysia.

How can I contact Thiam Seng Electrical Aircond.?

You can call us at +60182500089 (Mr Lim), email at tsetc@thiamseng.com, or message via WhatsApp at https://wa.me/60182500089.

What types of air conditioners do you supply and install?

We supply and install Panasonic, Midea, Daikin, and Haier air conditioners, including Wall Mounted, Mini Cassette, Cassette, and Ducted units (Standard and Inverter).

Do you provide repair and troubleshooting services?

Yes, our skilled technicians can repair and troubleshoot all kinds of air conditioning issues, including units not cooling, noisy ACs, error codes, timer blinking, gas leaks, and more.

Do you offer part replacement for air conditioners?

Absolutely. We use high-quality, genuine parts for replacements, including electronic controller boards, compressors, capacitors, fan motors, sensors, copper piping, wiring, drain pumps, filters, and more.

What is included in your chemical service?

Our chemical service includes inspection, dismantling the indoor unit, cleaning evaporator coils and fans, chemical cleaning of condenser units, washing and wiping indoor casing, flushing drain pipes, checking gas pressure, topping up refrigerant if needed, and a 30-day workmanship warranty.

Do you provide normal maintenance service?

Yes, our normal service includes cleaning indoor grills and filters, clearing drain pipes, checking outdoor unit gas, power supply, cooling performance, topping up refrigerant if needed, and a 30-day workmanship warranty.

Do you offer site assessment and design for air conditioning systems?

Yes, we perform thorough site visits to recommend the best placement and optimal horsepower for your air conditioning system, ensuring maximum efficiency and comfort.

Who is Thiam Seng Electrical Aircon?

Thiam Seng Electrical Aircon is an established air conditioning specialist in Malaysia since 1987. We supply, install, and service major aircond brands such as Panasonic, Daikin, Midea, and more for both residential and commercial properties.

Is Thiam Seng Electrical Aircon an authorized Panasonic dealer?

Yes, we are an Authorized Panasonic Dealer since 1995, and also an Authorized Service Partner and Stockist for Panasonic air conditioner spare parts since 2004.

Does Thiam Seng Electrical Aircon provide VRF system solutions?

Yes. We specialize in Panasonic and Daikin VRF systems for large-scale commercial and residential projects, handling sales, design, installation, commissioning, and maintenance.

Do you offer aircond repair and troubleshooting services?

Yes. Our experienced technicians provide on-site aircond troubleshooting, compressor and part replacement, gas refilling, and both normal and chemical cleaning services.

What other products does Thiam Seng Electrical Aircon sell?

We sell new and refurbished home appliances such as refrigerators, washing machines, water heaters, and fans, all tested for quality and reliability.

How can I contact Thiam Seng Electrical Aircon?

You can contact us via phone at 018-2500089 or email us at tsetc@thiamseng.com. Alternatively, visit our website at https://www.thiamseng.com/ for more details.

What are your business hours?

Our business hours are Monday to Saturday, from 9:00 AM to 6:00 PM. We are closed on Sundays and public holidays.

Do you provide home appliance services?

Yes, we offer supply, installation, and repair for ceiling fans, refrigerators, washing machines, dryers, and water heaters.

What makes Thiam Seng Electrical Aircon different from others?

Our 38 years of experience, technical expertise, and trusted partnerships with major aircond brands make us one of the most reliable choices in Petaling Jaya. We emphasize honest service, professional installation, and long-term customer satisfaction.

How long does a chemical service take?

Usually 1.5–3 hours per indoor unit depending on model and dirt level. We perform a pressure & gas check after reassembly.

Can I just do normal service instead of chemical?

Normal service is fine for routine upkeep. If you have bad smell, poor cooling, or leaks — chemical service is recommended to restore performance.

Will chemical cleaning damage my unit?

No — when done by trained technicians using appropriate chemicals and rinsing methods. Always choose certified technicians.

How much does chemical service cost?

Prices vary by HP and unit type. Contact local Thiam Seng service for an accurate quote.

Why the Panasonic Inverter Aircond Flap Doesn't Close Fully (Normal Behavior)

Name: Thiam Seng Electrical Aircond
Address: No.2A-1, Jalan PJU 8/5B, Damansara Perdana, Petaling Jaya, Selangor, 47820, MY
Telephone: +60182500089
Price range: RM
Rating: 5.0

Nov 17, 25

Why Your Panasonic Inverter Aircond Flap Doesn’t Close Fully — And Why That’s Normal

If your Panasonic inverter air conditioner flap (louver) stays slightly open after you switch the unit OFF, don’t worry — this is usually normal behaviour. Modern Panasonic models are designed to protect the unit and your indoor air quality by allowing a short self-drying / self-cleaning cycle after shutdown.

1. Moisture removal & ventilation — the main reason

After the compressor stops, moisture remains on the evaporator coil and inside the blower assembly. If the flap closed immediately and completely, that moisture would be trapped and encourage:

Mould and mildew growth
Musty odours
Faster dirt accumulation on the coil
Shorter component life

To avoid this, Panasonic keeps the flap slightly open (about 5–10% gap) so internal parts can air out and dry naturally. This ventilation gap is intentionally built into the shutdown cycle.

2. Self-cleaning / self-drying is happening — do not interrupt it

Many Panasonic inverter indoor units run a short self-cleaning or self-drying sequence after you press OFF. During this process the unit gently continues airflow to dry the coil and fan.

Important: while the flap is not fully closed, please avoid:

Switching off the main power to the aircond — cutting power stops the drying cycle mid-way.
Repeatedly pressing the ON/OFF button on the remote — turning it on and off interrupts the process.

3. You may see black spots on the front cover — this is normal

After the self-cleaning completes, you might notice tiny black specks or dust on the front cover. These are usually:

Dried mould or dead bacteria particles the unit has expelled
Dust residue loosened during the drying cycle

They are not a sign of a fault. You can wipe them away easily with a damp cloth. If you prefer, book a service with us and we’ll perform a proper cleaning.

4. How big a gap is normal?

Usually the flap closes to about 90–95% and leaves a small venting gap. This is expected provided:

There is no loud clicking or grinding noise
The flap opens fully when the unit is turned ON
The gap is even (not tilted or stuck on one side)

5. When to call for service

Contact a technician if:

The flap is jammed or crooked
There are repeated loud clicking noises
The flap doesn’t move at all

Need help? We’ll check it for you

Thiam Seng Electrical Trading Co. specialises in Panasonic inverter servicing and troubleshooting. If you want us to inspect, clean, or service your indoor unit, call/WhatsApp: 018-2500089, or visit www.thiamseng.com.

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