Mitsubishi Electric M Series Manual page 169

M series
MUZ-FD50VA
MUZ-FD50VAH
Indication
No. Symptom
LED1(Red) LED2(Yellow)
Outdoor unit
operates.
20 Once Lighting
21 Twice Lighting
3 times
22 Lighting
4 times
23 Lighting
24
5 times Lighting
Outdoor unit
operates
25 9 times
Lighting
Lighting
26
Lighting
Abnormal point/Condition
Primary current protection The input current exceeds 15A.
The current of the compressor exceeds 13A
Secondary current protection
(MUZ-FD50VA)/15A (MUZ-FD50VAH).
High-pressure protection
The indoor gas pipe temperature exceeds 45
Defrosting in cooling The indoor gas pipe temperature falls 3
Discharge temperature
The discharge temperature exceeds 100
protection
The frequency of the compressor is kept 80Hz or more
Low discharge
and the discharge temperature is kept under 39
temperature protection
more than 20 minutes.
Cooling high-pressure
The outdoor heat exchanger temperature exceeds 58
protection
during operation.
The unit is operated with emergency operation switch.
Inverter check mode
Normal
WALL-MOUNTED Inverter Heat Pump
Condition
during heating.
or below during cooling.
during operation.
for
-
C-167