Samsung AR07TSFABWKN Service Manual page 44

Troubleshooting
■ AC***BNZDCH
Abnormal conditions
Power reset
Error of Room sensor in the indoor unit(Open/Short)
Error of EVA-IN,EVA-OUT discharge sensor in the indoor
unit(Open/Short)
Error of Fan motor in the indoor unit
1. Error of Outdoor
2. Thermal Fuse Open Error of Indoor's Terminal Block
1. Clogging of outdoor's service valve
2. the refrigerant leakage
Detection of the float switch
1. Error of EEPROM
2. Error of Option setting
1. Error of Outdoor Temp. sensor
2. Error of Cond Temp. sensor
3. Error of discharge Temp. sensor
1. No communication for 2 minutes between indoor
units (Communication error for more than 2
minutes)
2. Indoor unit receiving the communication error from
outdoor unit
3. Outdoor unit tracking 3 minutes error
4. When sending the communication error from
the outdoor unit, the mismatching of the
communication numbers and installed numbers
after completion of tracking.(Communication error
for more than 2 minutes)
: On : Flickering x: Off
• If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
4-4
Indicators
Concealed Type
GREEN RED
Standard Type
X X
X X
X
X X X
X X
X X
X X X
X X
X X
Remarks
X X
X X
X X
X
X
1. Indoor unit
error (Display is
unrelated with
opteration)
X
2. Outdoor unit
error (Display is
unrelated with
operation)
Samsung Electronics