Samsung AM200FXWANR - Case Study - E205 (Internal Communication Error of the Outdoor Unit C-Box)

Samsung Electronics 150
Troubleshooting
4-4-6 Case study – E205 (Internal communication error of the outdoor unit C-box)
Outdoor unit
display
Indoorunit
display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation Defrost Timer Fan
Filter/
MPI
Operation Defrost Timer Filter Operation Timer Turbo
24℃ 27℃
× ×◑◑×× ◑◑×××◑◑×
※ ● : ON ◑ : Flash ×: OFF
Judgment
Method
∙ Communication error between the C-Box PBA.
Cause of
problem
∙ Communication wire inside the C-Box is unconnected.
∙ Main PBA defective.
Possibility
1) No communication jumper connector on Inverter PBA.
2) No power supply to inverter PBA.
3) Poor connection of communication wiring and connector.
4) Wrong HP information in EEPROM.
Comm. jumper Connection Inv1 and inv2
MAIN PBA
HUB PBA
INV PBA 1
INV PBA 2
Communication jumper
<PBA Connection order>
important
4-4 Case study for trouble shoots (cont.)