Mitsubishi Electric MXZ-2B30VA Service Manual page 63

10-5. INCREASING MAXIMUM COMPRESSOR OPERATIONAL FREQUENCY AND FAN SPEED OF THE
OUTDOOR UNIT
<MXZ-4B80VA, MXZ-5B100VA>
Compressor operational frequency and fan speed can be increased.
Capacity of the unit can be improved with this function.
NOTE:
Compressor operational frequency may not be increased under primary current restriction or high pressure protection.
Compressor operational frequency will not be increased when 1 or 2 indoor units are operating.
This function does not work when the function which lowers the operating noise of the outdoor unit is activated.
Noise level of the outdoor unit will increase (You may need to explain this to your customers.)
[How to increase maximum compressor operational frequency and fan speed]
Turn OFF the power supply for the air conditioner before making the setting.
Set the 3rd Dip Switch of SW2 on the outdoor electronic control P.C. board to ON to enable this function.
Turn ON the power supply for the air conditioner.
10-6. CHANGING DEFROST FINISH TEMPERATURE AND HEAT OPERATION TIME
<MXZ-4B80VA, MXZ-5B100VA>
If defrosting operation starts more than necessary, the defrost finish temperature and heat operation time can be changed.
The number of defrosting operation and defrosting time can be reduced with this function.
Defrost finish temperature (°C)
Heat operation time (min.)
[How to change defrost finish temperature and heat operation time]
Turn OFF the power supply for the air conditioner before making the setting.
Set the "1" of SW2 on the outdoor electronic control P.C. board to ON to enable this function.
Turn ON the power supply for the air conditioner.
10-7. CHANGING THE AMPERE LIMIT
<MXZ-4B80VA, MXZ-5B100VA>
With this function, you can change the current that flows in the
outdoor unit.
NOTE:
Use this function only when the amount of current exceeds
the allowed value.
[How to change the ampere limit]
Turn OFF the power supply for the air conditioner
before making the setting.
Make the setting referring to the table on the right.
Turn ON the power supply for the air conditioner.
OBH554D
Initial setting Changed
10 5
31 40
SW2
ON
1 2 3 4 5 6
SW2
ON
1 2 3 4 5 6
SW 2
ON
ON
ON
63
MXZ-4B80VA
MXZ-5B100VA
10.5A
15.5A
Initial setting
Full