Samsung MH020FPEA Service Manual page 37

Alignment and Adjustments
I MH✳✳✳FDEA/MH✳✳✳FEEA
The error indicated on the LED display of Indoor unit
Abnormal conditions
Power reset
Error of temperature sensor in indoor unit(OPEN/SHORT)
Error of heat exchanger sensor in indoor unit
Error of heat exchanger OUT sensor in indoor unit
Error of outlet temperature sensor in indoor unit
(OPEN/SHORT): For heat pump models only
Error of mixed operation
Error of outdoor temperature sensor
Error of COND sensor
Error of DISCHARGE sensor
1. No communication for 2 minutes between indoor unit
and outdoor unit (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 outdoor
unit the mismatching of the communication numbers
and installed numbers after completion of tracking.
(communication error for more than 2 minutes)
Self-diagnostic error
(including the indoor unit not detected)
1. Error of electronic expansion valve close
2. Error of electronic expansion valve open
3. Breakaway of EVA OUT sensor
4. Breakaway of EVA IN sensor
: On : Flickering : Off
N If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
N If you re-operate the air conditioner, it operates normally at first, then detect an error again.
3-3
Indicators
Concealed Type
Blue Red
Standard Type
Operating
Displayed on
appropriate indoor unit
which is operating
Displayed on
appropriate indoor unit
which is operating
Displayed on
appropriate indoor unit
which is operating
Displayed on outdoor
unit
1. Error of indoor unit :
Displayed on the
indoor unit regardless
of operation
2. Error of outdoor unit :
Displayed on the
indoor unit which is
operating
Displayed on
appropriate indoor unit
which is operating
Displayed on outdoor
unit
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