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CARRIER Programmable Thermostat: Mfr Part # VST4900 - Replacement HVACR Controls, Switches & Thermostats
CARRIERReplacement HVACR Controls, Switches & Thermostats

CARRIER Programmable Thermostat: Mfr Part # VST4900

CARRIER Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Programmable Thermostat.

SKU 3G-OTH-83923

Also listed as: VST 4900 · VST-4900

Brand
CARRIER
Item
Programmable Thermostat: Mfr Part # VST4900
Category
Replacement HVACR Controls, Switches & Thermostats
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

CARRIER
Manufacturer Part Number
VST4900
Product Type
Programmable Thermostat

Technical Documents

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CARRIER Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

CARRIER Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Programmable Thermostat.

Frequently Asked Questions

What is the CARRIER VST4900 programmable thermostat used for?

The CARRIER VST4900 programmable thermostat is used to control heating and cooling systems in commercial and residential HVAC applications. It allows users to set temperature schedules for energy savings and comfort. This replacement thermostat is compatible with Carrier systems and is commonly specified by plant engineers and maintenance technicians for retrofit or upgrade projects.

What are the specifications of the CARRIER VST4900 thermostat?

The CARRIER VST4900 is a programmable thermostat with manufacturer part number VST4900. It is designed as a replacement HVACR control for Carrier systems. Key specifications include its programmable functionality for temperature scheduling. For detailed electrical ratings or compatibility, consult the product datasheet or contact 3G Electric for technical support.

Where to buy the CARRIER VST4900 thermostat worldwide?

You can source the CARRIER VST4900 programmable thermostat worldwide through 3G Electric. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact our team for a quote and lead time. We supply genuine Carrier replacement controls for HVACR applications.

How to install the CARRIER VST4900 programmable thermostat?

To install the CARRIER VST4900, first turn off power to the HVAC system. Remove the old thermostat and label wires according to the terminal designations. Mount the new thermostat base, connect wires to matching terminals, and attach the faceplate. Restore power and follow the programming guide to set schedules. Always consult a qualified technician for installation.

Used in

Common applications for CARRIER
Commercial rooftop HVAC maintenance — Carrier heat exchanger kit 48GS660004 for replacing failed heat exchangers in packaged units.
Refrigeration system servicing — Carrier synthetic oil P903-2301 for lubricating compressors in HFC-based commercial refrigeration.
HVAC control system repair — Carrier blower control board HH84AA017 for restoring fan operation in air handlers.
Gas furnace safety inspection — Carrier rollout switch HH18HA449 for replacing faulty safety switches in heating systems.
Condenser unit overhaul — Carrier condenser fan blade 30GX660017 for replacing damaged blades in outdoor condensing units.
Compressor protection — Carrier crankcase heater HT31AZ121 for preventing liquid slugging in compressors during off-cycles.

CARRIER Products

3G Electric supplies CARRIER replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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