Mitsubishi Electric Mr. SLIM MSZ-FA25VA Technical Manual página 434

Resolución de averías
Indication
No. Symptom
LED1(Red) LED2(Yellow)
Outdoor unit
21 Once Lighting
operates.
Twice Lighting
22
23 3 times
Lighting
4 times
24 Lighting
5 times Lighting
25
Outdoor unit
operates
26 9 times
Lighting
normally.
Lighting
27
Lighting
434
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
When the frequency of the compressor is kept 80Hz or more and
Discharge temperature
the discharge temperature is kept under 50
protection
/40 (HEAT mode) for more than 40 minutes.
°C
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.
°C during heating.
• Check if indoor/outdoor unit air circulation is short cycled.
°C or below during cooling.
• Check refrigerant circuit and refrigerant amount.
• Refer to 13-6.D "Check of LEV".
(COOL mode)
°C
• Refer to 13-6.F "Check of outdoor thermistors".
• Refer to 13-6.D "Check of LEV".
°C for more than 20
• 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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