Samsung DVM S ECO BIG Series - Page 89

Troubleshooting
Samsung Electronics 4-47
■ Phase reversal or phase failure(3Ø outdoor unit wiring, R-S-T-N),
connection error on 3 phase input. (E-428) (cont.)
Outdoor unit Display E-428
Indoor unit Display
Duct, Cassette (1 / 2Way), Console, Ceiling
Operation Defrost Timer Fan Filter / MPI
× ×
◑ ◑
◑
Cassette (4Way / Mini 4Way)
Operation Defrost Timer Filter
×
◑
◑ ◑
Duct, Cassette (1/2 Way), Console, Ceiling
Operation Timer Turbo 24°C 27°C
× ×
◑ ◑ ◑
※ ● : ON ◑ : Flash ×: OFF
Judgement Method
•Compressionratio[(Highpressure+1.03)/(Lowpressure+1.03)]lessthan1.5and
lasts for 10 minutes or more
•Differentialpressure(highpressure-lowpressure)lessthan0.4MPa.Gand
lasts for 10 minutes or more
Cause of problem
•IndoorandOutdoorEEVbreakdown
•4WayValvebreakdown
•HighandLowpressuresensordefective
•Refrigerantshortage