Troubleshooting For Indoor Unit - Samsung AC036JB1DEC Service Manual

4-2-2 Troubleshooting for indoor unit

Error detection and reoperation
1. If an error occurs during operaion, the LED flashers to indicate that there is a problem then all operations stop except LED.
2. When resuming operation with remote controller and switch, it determines error mode after normal operation.
1way cassette(AC JB1DEC Series)
Error Mode
Power Reset
Error on room temperature sensor of indoor unit (Short or Open)
(E121)
Error on Eva-in sensor of indoor unit (Short or Open)(E122)
Error on Eva-out sensor of indoor unit (Short or Open)(E123)
Indoor fan error (E154) :
Under 450 RPM for more than 15 seconds
Error of outdoor unit
Error of the terminal block thermal fuse (Open) (E198)
Error on float switch (2nd detection)(E153)
EEPROM circuit failure (E162)
EEPROM option error (E163)
Communication error between indoor unit and outdoor unit(E101)
Communication error after tracking due to unmatching number of
installed units(E201)
Communication error between indoor unit and outdoor unit(E202)
Communication error between outdoor unit inv - main
micom(E203)
Blockage detected on high pressure pipe (E422)
4-11
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Blue
X
X
X
X
X
X
LED Display
Operation Timer SPi
Green Blue Blue
X X
X
X
X X
X
X X
X
X
X X
Filter
Blue
X X Abnormal power.
X X Indoor unit temperature s
X X Indoor unit heat exchange
Restriction of indoor unit f
X
Low speed operation of in
Outdoor unit error occurs
Terminal Block thermal fu
Check the float sensor
Faulty of EEPROM parts.
Faulty of EEPROM circuit p
Blockage of outdoor unit v
2 minutes no communica
X unit and outdoor unit.(Co
more than 2 minutes)
After complete Tracking
of the indoor unit nu
communicated error
disconnection)
X
When there is no respons
tracking is completed
Communication error be
main micom
Blockage of outdoor unit v
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