Time Chart; Control Data - Mitsubishi Electric Mr.Slim MSZ09UN Service Manual

(2) Time chart

Air conditioner ON
Positioning
Standard
opening
degree
13 min.
ON

(3) Control data

(a) Reference value of target discharge temperature
(COOL/HEAT °F)
A
MSZ09UN 136/120 145/136
MSZ12UN 126/118 129/135 138/151 151/160
MSZ09UN
In COOL mode, the two indoor coil thermistor (one main and one sub) sense temperature ununiformity (super heat)
at the heat exchanger, And when temperature difference have developed, the indoor coil thermistors adjust LEV
opening to get approximate 16 degrees lower temperature than the target temperature in the table above, thus
diminishing super heat.
(b) Reference value of LEV standard degree opening
(COOL/ HEAT pulse)
A
MSZ09UN
120/100 170/130
MSZ12UN 190/120 220/170 250/190 280/210
Air conditioner OFF
(thermostat off)
Opening degree is
corrected according
to discharge
temperature.
OFF Time
B C D
156/151 165/160 –/169
–/169
B C D
210/160 230/180 –/200
Commanded
to open
Time
E F
–/–
–/172
The operational frequency of the compressor
E F
–/–
–/230
–/240
The operational frequency of the compressor
38
D
C
B
A
30 50 70 90
D
C
B
A
30 50 70 90
F
E
110 130
(Hz)
F
E
110 130
(Hz)