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CARRIER Thermistor Start Kit: Mfr Part # P421-4006 - Replacement HVACR Controls, Switches & Thermostats
CARRIERReplacement HVACR Controls, Switches & Thermostats

CARRIER Thermistor Start Kit: Mfr Part # P421-4006

SKU 3G-OTH-114251

Brand
CARRIER
Item
Thermistor Start Kit: Mfr Part # P421-4006
Category
Replacement HVACR Controls, Switches & Thermostats
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Technical Specifications

CARRIER
Manufacturer Part Number
P421-4006
Product Type
Thermistor Start Kit
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CARRIER Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the CARRIER Thermistor Start Kit P421-4006 used for?

The CARRIER Thermistor Start Kit P421-4006 is used in HVACR systems to provide reliable starting torque for compressors. It helps prevent hard-start issues and extends compressor life by regulating current during startup. This replacement control is commonly applied in commercial and residential air conditioning and refrigeration units.

What are the specifications of the CARRIER Thermistor Start Kit P421-4006?

The CARRIER Thermistor Start Kit P421-4006 has manufacturer part number P421-4006 and product type Thermistor Start Kit. It is designed as a replacement HVACR control for compressors. For detailed electrical ratings and compatibility, consult the unit's service manual or contact 3G Electric for technical support.

Where to buy the CARRIER Thermistor Start Kit P421-4006 worldwide?

You can source the CARRIER Thermistor Start Kit P421-4006 from 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide competitive pricing and reliable sourcing for this replacement HVACR control.

How to install the CARRIER Thermistor Start Kit P421-4006?

To install the CARRIER Thermistor Start Kit P421-4006, first disconnect power to the HVACR unit. Mount the kit securely near the compressor, connect the thermistor leads per the wiring diagram, and ensure proper electrical connections. Always follow the manufacturer's service manual and local electrical codes. 3G Electric supplies this kit as a direct replacement part.

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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