Mitsubishi Electric Mr. SLIM MSZ-FA25VA Technical Manual página 332

Resolución de averías
Indication
No. Symptom
LED1(Red) LED2(Yellow)
Outdoor unit
20 Once Lighting
operates.
Twice Lighting
21
3 times
22
Lighting
4 times
23 Lighting
5 times Lighting
24
Outdoor unit
operates
25 9 times Lighting
Lighting
26
Lighting
332
Abnormal point / Condition
Primary current protection
When the input current exceeds 15A.
When the current of the compressor exceeds 15A.
Secondary current protection
High-pressure protection When the indoor gas pipe temperature exceeds 45
Defrosting in cooling When the indoor gas pipe temperature falls 3
Discharge temperature
When the discharge temperature exceeds 100
protection
When the frequency of the compressor is kept 80Hz or more and
Low discharge
the discharge temperature is kept under 39
temperature protection
minutes.
Cooling high-pressure
When the outdoor heat exchanger temperature exceeds 58
protection
during operation.
Inverter check mode When the unit is operated with emergency operation switch.
Normal
Condition
These symptoms do not mean any abnormality of the
product, but check the following points.
• Check if indoor filters are clogged.
• Check if refrigerant is short.
during heating.
°C
• Check if indoor/outdoor unit air circulation is short cycled.
or below during cooling.
°C
• Check refrigerant circuit and refrigerant amount.
during operation. • Refer to 12-5.T "Check of LEV".
°C
• Refer to 12-5.V "Check of outdoor thermistors".
• Refer to 12-5.T "Check of LEV".
for more than 20
°C
• Check refrigerant circuit and refrigerant amount.
This symptom does not mean any abnormality of the
product, but check the following points.
°C
• Check if indoor filters are clogged.
• Check if refrigerant is short.
• Check if indoor/outdoor unit air circulation is short cycled.
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Correspondence
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