Mitsubishi Electric MSZ-LN-VG Series Service Manual page 100

MXZ-2F
Upper or
left lamp of
OPERATION Abnormal point
INDICATOR (Failure mode/protection)
lamp (Indoor
unit)
14-time blink
Refrigerant leakage
(Sensor detection)
Incompatible unit combination
17 time blink Outdoor refrigerant system
abnormality
OBH790D
LED indication
(Outdoor P.C. board)
LED 1 LED 2
Lit Lit The refrigerant sensor mounted on the
indoor unit does not work.
The refrigerant sensor is not connected
properly or the wire is broken.
Lit 11 times The indoor unit which is not compatible
with the outdoor unit is connected.
Lit 17 times A closed valve and air trapped in the
refrigerant circuit are detected based on
the temperature sensed by the indoor and
outdoor thermistors and the current of the
compressor.
100
Condition
• Connect the connector of the re-
frigerant sensor properly.
• Replace the refrigerant sensor.
• Replace the indoor unit with the
one which is compatible with the
outdoor unit.
• Check for a gas leak in a connecting
piping etc.
• Check the stop valve.
• Refer to 12-6.
door refrigerant circuit".
Indoor/
outdoor
unit failure
Remedy
mode
recall
function
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"Check of out-