What does the mesage P4 mean

P4 is discharge air sensor error. This means giving the indoor and outdoor conditions, the unit sensor is way out of range. This is usually caused by lack of refrigerant.

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18,000 BTU 22.5 SEER Carrier Dual Zone Heat Pump System 12+12 - Wall Mounted

18,000 BTU 22.5 SEER Carrier Dual Zone Heat Pump System 12+12 - Wall Mounted

Carrier 18,000 BTU 22.5 SEER Dual Zone Heat Pump System 12+12 - Wall Mounted

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Carrier

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Model

38MGRQ18B-3 / 2-40MAQB12B-3

9863

1 Question Answered

Description

The Carrier 38MG series inverter driven ductless mini-split system keeps your home warm and toasty in the winter and cool and comfortable in the summer, all while helping reduce your heating and cooling costs. Featuring high energy efficiency, compact design and convenience, including wireless remote control, Carrier mini-split systems are a perfect solution for the most modern home, as well as older homes in which typical ducted systems are not economical or practical to install. These systems feature quick installation, easy maintenance, easy to use controls, and whisper quiet indoor operation.

Since 1902, Carrier has been the brand you’ve trusted for all your heating and cooling solutions.

Features:

Variable Speed Two-Stage Inverter Compressor
High Energy Efficiency
Add Zones as Needed
Control Zones Separately
Quiet Operation with no Bulky Indoor Equipment
Minimal Indoor and Outdoor Space Requirements
Easy Servicing and Maintenance
Several Operating Modes
Wireless Remote Control

Product Specs

More Information
18,000 BTU 22.5 SEER Carrier Mini Split 2 Zone Heat Pump Condenser
Feature	Spec
SKU	38MGRQ18B-3
Refrigerant Charge	Pre-charged for: 49'
Weight (in lbs)	105
AHRI Certificate Number	9118461 & 202345965 & 204722795
Brand/Manufacturer	Carrier
UPC	na
Cooling BTU	21,940 BTU
Heating BTU	24,480 BTU
Maximum CFM	1390 CFM
Energy Star	Yes
Refrigerant	R410A
HSPF	10.3
EER	12.5
Liquid Line	1/4" (2)
Suction Line	3/8" (2)
Electrical	208/230V 1 Phase 60Hz
Phase	Single Phase
Max Breaker Size	25 Amps
Min. Breaker Size	18 Amps
Amperage Requirement	25 Amps
Tonnage	1.5 Ton
Min/Max Outdoor Temp for Heating	-22°F-86°F
Min/Max Outdoor Temp for Cooling	-13°F-122°F
Zone Compatibility	Multi Zone
Height	27-3/5"
Width	33-3/10"
Depth	13-1/5"
Warranty	10 years with online registration, 5 years without
Resources	Carrier Specifications Carrier Product Family Brochure Carrier WiFi Brochure Carrier Warranty You will need AdobeÂ® AcrobatÂ® Reader to view PDF documents.
Safety Information	PROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here.

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Why Choose Carrier?

Carrier heating and cooling systems are built on a legacy of innovation, delivering dependable comfort, energy efficiency, and advanced climate control. Engineered for performance and durability, Carrier solutions provide year-round temperature precision and enhanced indoor air quality for any home or business.