Mitsubishi Electric M Series Manual page 262

FLOOR-STANDING Inverter Heat Pump
MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA
OPERATION INDICATOR
Abnormal
No.
Operation indicator lamp
point
Right lamp flash
MXZ type
Operation
1
mode
2.5-second OFF
setting
NOTE: When the indoor unit has started operation and the above failures are detected (the first detection after the power
ON), the indoor electronic control P.C. board turns OFF the indoor fan motor with OPERATION INDICATOR lamp
flashing.
C-260
Lighted
· Flashing of OPERATION INDICATOR lamp (right-hand side lamp) indicates
abnormality.
Blinking
· OPERATION INDICATOR lamp (left-hand side lamp) is lighted.
Not lighted
Symptom
Outdoor unit
operates but
indoor unit
does not
operate.
Check point
When the operation mode of the each indoor
unit is differently set to COOL(includes DRY)
and HEAT at the same time, the operation
mode of the indoor unit that has operated at
first has the priority.
M series