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108 degree day here and got a 84-high pressure lockout 4
108 degree day here and got a 84-high pressure lockout 4 hours in older Carrier system. 84 degrees in house now. Sounds like fan is running, but no fan running on system outside. Of course it's a Sund… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
16,160 satisfied customers
I have a 2 yr old Carrier Infinity heat pump, 20 SEER, that
I have a 2 yr old Carrier Infinity heat pump, 20 SEER, that gave me a system fault of 84, high pressure lockout for 4 hrs. I did have a dirty filter and changed it. Coils are clean, but I can do a qui… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
16,160 satisfied customers
I have infinity carrier system and yesterday i got a code 84
i have infinity carrier system and yesterday i got a code 84 high pressure...soo today a tech came out said i need to replace a fan motor which he said because i have a variable speed unit instead of … read more
Phil
Phil
Consultant to Engrs, Govt & Contractors
Degree, Mech Engr Technology
12,651 satisfied customers
My Carrier thermostat says system malfunction. When I click
My Carrier thermostat says system malfunction. When I click “next”, the screen reads: … read more
Tamar D
Tamar D
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Vocational, Technical or Trade School
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What is an 84 high pressure lockout what does that mean.
What is an 84 high pressure lockout what does that mean … read more
Ken HVAC Tech
Ken HVAC Tech
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Vocational, Technical or Trade School
18 satisfied customers
I'm working on a carrier heat pump infinity series. it has
I'm working on a carrier heat pump infinity series. it has an accumulator and the system can hold 14 lbs of 410a. i'm getting coe 84 "high pressure lock out" I'm thinking the system is overcharged. Wi… read more
MarkB1247
MarkB1247
Commercial Service Technician / Controls
HVAC/Refrigeration Technology
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Woke up to a 84-HIGH PRESSURE LOCKOUT FOR 4 Can that be
Woke up to a 84-HIGH PRESSURE LOCKOUT FOR 4 Can that be caused by a dirty filter? … read more
Gaztech1
Gaztech1
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I have a carrier system that has a 82- thermal lock out
Hi - I have a carrier system that has a 82- thermal lock out fault … read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
16,160 satisfied customers
Thermostat shows a fault 84, high pressure lockout and has
thermostat shows a fault 84, high pressure lockout and has apparently shut down the unit … read more
Cliff
Cliff
HVAC Contractor / HVAC Instructor
Bachelor's Degree
399 satisfied customers
I have a Carrier AC unit that is probably 3 years old and I
I have a Carrier AC unit that is probably 3 years old and I have a code 84 high pressure lockout indicator can I solve that myself? … read more
Daniel Plourde
Daniel Plourde
plumbing, hvac technichian
Vocational, Technical or Trade School
718 satisfied customers
My evolution system shows a system malfunction and a code
My Bryant evolution system shows a system malfunction and a code 84- high pressure lockout. … read more
Douglas
Douglas
Vocational, Technical or Trade Scho
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Carrier Infinity. Unit stopped blowing cold air. Went off
Carrier Infinity. Unit stopped blowing cold air. Went off shortly thereafter. Controller says: System Fault 84-High Pressure Lockout 4 … read more
Phil
Phil
Consultant to Engrs, Govt & Contractors
Degree, Mech Engr Technology
12,651 satisfied customers
Our carrier infinity says "system malfunction". The fan is
our carrier infinity says "system malfunction". The fan is working but it is not cool. I went to the attic and changed the filter but code is still there. What does this mean? … read more
Appliance Guru
Appliance Guru
23,667 satisfied customers
I have just read what you have posted about a code 84 - High
I have just read what you have posted about a code 84 - High Pressure Lockout on a Carrier Infinity unit. Our indoor condenser was filthy, so we kept getting Change Filter alerts. Then we started to g… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
16,160 satisfied customers
I am having a error code 84 high pressure lockout on my
I am having a error code 84 high pressure lockout on my carrier system … read more
D.E. Anderson
D.E. Anderson
Industrial Refrigeration Service Manager
210 satisfied customers
Carrier Infinity with high pressure and error code 84.
I have a Carrier Infinity system less than three years old and it is showing a system malfunction - high pressure & A #84. What is the issue? Is there anything I can do to reset the system? In Dallas … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,490 satisfied customers
Two months ago I had a Carrier Infinity 4 Ton unit installed
Two months ago I had a Carrier Infinity 4 Ton unit installed to replace a 17 yr old Lennox system that cools the 1600 sq ft 2nd floor of my house. All the old flex ductwork was replaced with new hard-… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,490 satisfied customers
Hi, I have a 4 year old Carrier Infinity system and just in
Hi, I have a 4 year old Carrier Infinity system and just in the last few weeks it has begun to not cool to temperature set (73 degrees) and is usually about 5 to 6 degrees above set temperature and hu… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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