Simultaneous Correction Of Lev Openings By Suction Super Heat - Mitsubishi Electric MSH09TW Service Manual

1
220
210
200
190
180
170
160
150
140
130
120
7
1
COOL 130
HEAT 120
Capacity code
2
Indoor unit 09
<Correction>
1 Suction super heat
(MIN gas pipe temperature thermistor - Evaporation temperature thermistor)
2 Each correction w 1
• (Each gas pipe temperature thermistor - Evaporation temperature thermistor)
3 Discharge temperature
w 1 Perform this, when number of operation units is 2units or more
w 2 When the correction opening of suction super heat is 0, correct the LEV opening by Discharge temperature.
(1) Simultaneous correction of LEV openings by suction super heat (COOL, DRY)
(Correction is performed only for operating unit.)
(Suction super heat) = (Minimum gas pipe temperature) - (Evaporation temperature)
Correct the LEV openings simultaneusly as the table below
Suction superheat (S.H.) LEV opening
more than 53.6
50 to53.6
46.4 to 50
42.8 to 46.4
42.8 or less
Standard opening
2 3 4
20 40 60
Operation frequency of compressor (Hz) : F
Standard opening (pulse)
2 3 4 5
130 130 150 170
130 140 155 170
3 4
12 15/17
correction (pulse)
6
4
3
2
0
5 6 7
80 100 120
Difference in
capacity
6 7 8 Code2
180 180 190 25
185 200 215 15
68
8
COOL
HEAT
140
Difference in
operation number
Code3 Code4 2 3
50 75 -30 -40
30 45 -10 -40
COOL DRY
• •
• •
w 2 w 2
4
-50
-50
HEAT
-
•