Mitsubishi Electric MUZ-GA50VA-E1, Руководство по обслуживанию

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Primary current protection
Secondary current protection
High-pressure protection
Defrosting in cooling
3 times
Lighting
Discharge temperature
protection
• Check refrigerant circuit and refrigerant amount.
• Refer to 11-6. "Check of LEV".
• Refer to 11-6. "Check of outdoor thermistors".
4 times Lighting
Low discharge temperature
protection
• Refer to 11-6. "Check of LEV".
• Check refrigerant circuit and refrigerant amount.
5 times Lighting Cooling high-pressure protection
This symptom does not mean any abnormality of the product,
but check the following points.
• Check if indoor filters are clogged.
• Check if refrigerant is short.
• Check if indoor/outdoor unit air circulation is short cycled.
-
-
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.
• Check if indoor/outdoor unit air circulation is short cycled.
Twice Lighting
Once Lighting
The discharge temperature exceeds 100°C during operation.
The frequency of the compressor is kept 80Hz or more and the discharge
temperature is kept under 39°C for more than 20 minutes.
The outdoor heat exchanger temperature exceeds 58°C during operation.
9 times Lighting
Inverter check mode
Lighting
Lighting Normal
The unit is operated with emergency operation switch.
-
The input current exceeds 15A.
The current of the compressor exceeds 15A.
The indoor gas pipe temperature exceeds 45°C during heating.
The indoor gas pipe temperature falls 3°C or below during cooling.
LED1(Red) LED2(Yellow)
Abnormal point/Condition Remedy
Indication
Condition
Outdoor unit
operates.
Outdoor unit
operates
No. Symptom
20
21
22
23
24
25
26