Troubleshooting
Samsung Electronics 4-81
4-4-36 EVI EEV Open error
Outdoor unit display
Indoorunit display
Judgment Method
. DSH<5ఁ , EVI Out-EVI In<0ఁ & frequency> 65Hz 40 minutes maintaining
Cause of problem
. EVI EEV and Intercooler leakage, excessive refrigerant amount, Outdoor Check Valve inserted opposite.
. Indoor Unit EEV leakage, direct connection between Indoor Liquid Pipe and the Gas Pipe.
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation
Defrost TimerFan Filter/MPI
Operation
Defrost Timer Filter
Operation
TimerTurbo
××◑◑◑×◑◑◑
●
◑◑
※ ● :
ON
◑ :
Flash
×:
OFF
ఐ For the indoor EEV leakage check, operate one of the indoor units in cooling mode and the others in fan mode.
· In case of normal units in fan mode, EVA In/Out temperatures become close to the room temperature within 5minutes.
· Change th
e cooling unit to the fan mode and one of the fan unit to the cooling mode, and then check again.
ఐ If the refrigerant amount was excessively charged, DSH may be decreased during the
cooling operation at low temperature.
ఐ For the EVI EEV leakage check, check for the EVI in sensor temperature when the cooling operation with the EVI EEV 0step.
· Separate the EVI EEV connector from the HUB PBA, when the outdoor unit is off.
· In cas
e of EVI EEV leakage in cooling mode, EVI In temperature at least 10ఁ lower than the outside temperature.
1.
How to check
Check the refrigerant
No
Reconnect connector
Is EVI EEV connector accurately connected to
PCB?
Yes
No
Reassemble coil
Is EEV coil accurately installed?
Yes
Abnormal
Replace Intercooler
Check for Intercooler leakage.
Normal
Check for Intercooler leakage.
Abnormal
Replace Indoor Unit EEV
Normal
Yes
Reinstall pipe
Is there a liquid-gas pipe directly connected to
each other?
No
Abnormal
Replace EVI EEV
Check for EVI EEV leakage.
Normal
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