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Table of Contents > A/C System Test Result (Manual A/C)

Honda CR-V Heating, Ventilation & Air Conditioning Troubleshooting ➜ A/C System Test Result (Manual A/C)

condenser internal passages or  
lines/components restricting  
refrigerant flow  
More than 50 - 60 Β°F (10 - 16 Β°C) temperature  
drop across A/C condenser inlet to outlet pipes  
Significant temperature difference along high  
or low side A/C lines or components  
Suction and Discharge  
pressures abnormally  
Low  
Restriction in A/C suction or  
discharge lines or components  
(check temperatures to isolate)  
NOTE:  
Some restrictions may not show up until 3,  
00 rpm  
Suction pressure High  
and Discharge pressure  
Low  


Excessive A/C compressor noise  
A/C compressor internal  
damage (Check for A/C system  
debris contamination)  
Pressures equalize quickly and noise  
after A/C compressor turns off  

Slightly low refrigerant  
charge  

Air mix door sticking,  
misadjusted or  
inoperative  
Vent temperature too high  
Suction and discharge  
pressures slightly low  

Excessive refrigerant oil  
in system  


Air/Non-condensable  
gasses in system  
Static pressures high with A/C system  
equalized. (After engine is off 4 - 12 hours)  
Contaminated or  
incorrect refrigerant  
A/C SYSTEM TEST RESULT (MANUAL A/C)  
Test Results  
Related Symptoms  
Probable Cause  


Low refrigerant charge  
Driver's and passenger's  
side A/C vent  
temperatures may vary  
by approximately 20Β° F  
(11Β°C) or more  
Suction pressure may be low  
Expansion valve not  
opening sufficiently  
Air mix door stuck or  
inoperative  
Air mix door DTCs present  
Discharge pressure reduced when A/C  
condenser cooled with water spray  
Significant refrigerant  
overcharge  

Restricted/weak airflow through A/C  
condenser  



Dirty A/C condenser or  
damaged fins  
Discharge pressure  
abnormally High  

With doors open, fresh air selected, and  
radiator and A/C condenser fans run on  
high speed, temperature drop across A/C  
condenser inlet to outlet is less than  
about 41 Β°F (5 Β°C) while A/C  
Debris between A/C  
condenser and radiator  
Radiator and/or A/C  
condenser fan(s)  
malfunctioning  
compressor is running  


Suction and discharge pressures equalize  
rapidly after stopping A/C compressor  
Discharge pressure  
abnormally Low  
Faulty A/C compressor  
discharge valve or seal  
Suction pressure higher than normal  
Restricted blower intake or  
dust and pollen filter  
Weak or insufficient airflow across evaporator  
Suction pressure varies from near normal to a  
vacuum, as moisture freezes in expansion  
valve orifice  


Moisture in the system  
Faulty expansion valve  


Evaporator freezing  
Suction pressure  
abnormally Low  
Faulty evaporator  
temperature sensor  
(check DTC)  


Reduced airflow from vents  
Vent temperature is very low  

Faulty expansion valve  
or A/C compressor  
clutch relay stuck in the  
on position  

Lack of slight suction pressure variation  
at 1, 00 rpm when "Recirculated"  
airflow is switched to "Fresh Air"  
Suction pressure  
abnormally High  
Expansion valve stuck open or  
open too long  


Discharge pressure near normal  
A sheet of paper does not stick to front  
of A/C condenser surface with cooling  
fans on  

Radiator and/or A/C  
condenser fan motor(s)  
inoperative or wires  
reversed  

With doors open, fresh air selected and  
radiator and A/C condenser fan run on  
high speed, temperature drop across A/C  
condenser inlet to outlet is less than  
about 41 Β°F (5 Β°C)  
Suction and Discharge  
pressures abnormally  
High  


Insufficient A/C  
compressor clutch  
clearance  


A/C compressor clutch remains engaged  
during off cycle  
A/C compressor clutch  
relay stuck in the on  
position or circuit  
problem  
A/C compressor relief valve may open  

Excessive air in system  
Suction line from expansion valve to A/C  
compressor is not cold  
Excessively low refrigerant  
charge  
Lack of slight suction pressure variation at 1, Expansion valve clogged with  
00 rpm when "Recirculated" airflow is  
switched to "Fresh Air"  
debris/desiccant, stuck closed,  
or not opening sufficiently  
Blocked or restricted A/C  
Suction and Discharge More than 50 - 60 Β°F (10 - 16 Β°C) temperature condenser internal passages or  
pressures abnormally  
Low  
drop across A/C condenser inlet to outlet pipes lines/components restricting  
refrigerant flow  
Significant temperature difference along high  
or low side A/C lines or components  
Restriction in A/C suction or  
discharge lines or components  
NOTE:  
(check temperatures to isolate)  
Some restrictions may not show up until 3,  
00 rpm  
Suction pressure High  
and Discharge pressure  
Low  


Excessive A/C compressor noise  
A/C compressor internal  
damage (Check for A/C system  
debris contamination)  
Pressures equalize quickly and noise  
after A/C compressor turns off  

Slightly low refrigerant  
charge  

Air mix door sticking,  
misadjusted or  
inoperative  
Vent temperature too high  
Suction and discharge  
pressures slightly low  

Excessive refrigerant oil  
in system  


Air/Non-condensable  
gasses in system  
Static pressures high with A/C system  
equalized. (After engine is off 4 - 12 hours)  
Contaminated or  
incorrect refrigerant  
reload full screen
2024 Honda CR-V Owner's Manual 2024 Honda CR-V Owner's Manual
2023 Honda CR-V Owner's Manual 2023 Honda CR-V Owner's Manual
2022 Honda CR-V Owner's Manual 2022 Honda CR-V Owner's Manual
2021 Honda CR-V Owner's Manual 2021 Honda CR-V Owner's Manual
2020 Honda CR-V Owner's Manual 2020 Honda CR-V Owner's Manual
2019 Honda CR-V Owner's Manual 2019 Honda CR-V Owner's Manual
2018 Honda CR-V Owner's Manual 2018 Honda CR-V Owner's Manual
2017 Honda CR-V Owner's Manual 2017 Honda CR-V Owner's Manual
2015 Honda CR-V Owner's Manual 2015 Honda CR-V Owner's Manual

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2024 Honda CR-V Owner's Manual2024 Honda CR-V Owner's Manual
2023 Honda CR-V Owner's Manual2023 Honda CR-V Owner's Manual
2022 Honda CR-V Owner's Manual2022 Honda CR-V Owner's Manual
2021 Honda CR-V Owner's Manual2021 Honda CR-V Owner's Manual
2020 Honda CR-V Owner's Manual2020 Honda CR-V Owner's Manual
2019 Honda CR-V Owner's Manual2019 Honda CR-V Owner's Manual
2018 Honda CR-V Owner's Manual2018 Honda CR-V Owner's Manual
2017 Honda CR-V Owner's Manual2017 Honda CR-V Owner's Manual


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