Mitsubishi Electric M-SERIES, Руководство по установке

Страница: 104 / 120

102
UPPER LAMP
(INDOOR UNIT)
ABNORMAL POINT
(FAILURE MODE/
PROTECTION)
LED INDICATION
(OUTDOOR P.C. BOARD)
CONDITION REMEDY
INDOOR/
OUTDOOR
UNIT FAILURE
MODE RECALL
FUNCTION
OUTDOOR
UNIT
FAILURE
MODE
RECALL
FUNCTION
7-time flash
2.5 seconds
OFF
Fin temperature/P.C. board
temperature
7-time flash
2.5 seconds OFF
Temperature of fin temperature
thermistor on the inverter P.C.
board exceeds 75~ 86°C, or
temperature of P.C. board
temperature thermistor on the
inverter P.C. board exceeds 72
~ 85°C.
Check around outdoor unit.
Check outdoor unit air passage.
Refer to 12-5. “Check of
outdoor fan motor”.
-
8-time flash
2.5 seconds
OFF
Outdoor fan motor -
Outdoor fan has stopped
3 times in a row within 30
seconds after outdoor fan
startup.
Refer to 12-5. “Check of
outdoor fan motor”.
Refer to 12-5. “Check of
inverter P.C. board”.
-
9-time flash
2.5 seconds
OFF
Nonvolatile memory data
5-time flash
2.5 seconds OFF
Nonvolatile memory data
cannot be
read properly.
Replace the inverter P.C. board.
Power module (IC700)
6-time flash
2.5 seconds OFF
The interface short circuit
occurs in the output of the
power module (IC700). The
compressor winding shorts
circuit.
Refer to 12-5. “How to check
inverter/compressor”.
-
10-time flash
2.5 seconds
OFF
Discharge temperature -
Temperature of discharge
temperature thermistor has
been 50°C or less for 20
minutes.
Refer to 12-5. “Check of LEV”.
Check refrigerant circuit and
refrigerant amount.
-
11-time flash
2.5 seconds
OFF
Bus-bar voltage (DC)
8-time flash
2.5 seconds OFF
Bus-bar voltage of inverter
cannot be detected normally
Refer to 12-5. “How to check
inverter/ Each phase current of
compressor”.
Each phase current of
compressor”.
9-time flash
2.5 seconds OFF
Each phase current of
compressor cannot be detected
normally.
14-time flash
or more
2.5 seconds
OFF
Stop valve (Closed valve)
14-time flash
2.5 seconds OFF
Closed valve is detected by
compressor current.
Check stop valve.
4-way valve/
Pipe temperature
16-time flash
2.5 seconds OFF
The 4-way valve does not
work properly. The indoor coil
thermistor detects an abnormal
temperature.
Check the 4-way valve.
Replace the inverter P.C. board.
16 lampeggi
2.5 sec. spenta
Outdoor refrigerant system
abnormality
1-time flash
2.5 seconds OFF
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.
Check for a gas leak in a
connecting piping etc.
Check the stop valve.
Refer to 12-5. “Check of
outdoor refrigerant circuit”.
FAILURE MODE RECALL SERIE M - OUTDOOR UNIT - MONOSPLIT
MITSUBISHI ELECTRIC / DIAGNOSTIC