Samsung AM072/096/120/144FXVAFH, Service Manual

Page: 293 / 295

9-14 Samsung Electronics
9-2 Amount of refrigerant automatically checking
Through the detect operation is the ability to verify automatically for the amount of refrigerant.
Start
"K2" Tact Switch : Press the 5 times. Signal input
Temperature conditions satisfied Temperature conditions satisfied
Check the amount of refrigerant Check the amount of refrigerant
Judge the amount of refrigerant
(Normal) (Excessive)
Complete
Normal
Excessive of
refrigerant
amount
Deficiency of
refrigerant
amount
Deficiency of
Over-cooling
Undetermined
(Deficiency) (Undetermined)
Judge the amount of refrigerant
S-CHECKER signal input
[Caution]
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If escape the warranty temperatures, can not get the accurate results.
- Indoor : 68~86 ˚F
- Outdoor : 41~109.4 ˚F
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If operation cycle is not stable, Checking the amount of refrigerant can be forced to shut down.
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If did not operation for a long time, or when running the heating operation, the accuracy may be lower.
Therefore carried out for more than 30 minutes cooling operation.
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Depending on the installation environment, system protection operation is performed, in this case, the check result may be inaccurate.
[How to troubleshoot the judged results]
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Excessive of refrigerant amount : After the 5% emissions of calculated total refrigerant amount, retry Checking the amount of refrigerant.
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Deficiency of refrigerant amount : After the 5% addition of calculated total refrigerant amount, retry Checking the amount of refrigerant.
Ɣ
Deficiency of Over-cooling : After the 10% addition of calculated total refrigerant amount, retry Checking the amount of refrigerant.
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Undetermined : Checking the amount of refrigerant confirms that is performed in warranty temperatures area.
Ensure that there is no other problems in the system by Test Operation.