Mitsubishi Electric PUZ-WZ50VAA Service Manual page 72

10-1-1. Detail Contents in Request Code
[Operation state] (Request code :" 0")
Data display
C 4
Operation mode
Display Operation mode
0 STOP • FAN
C COOL • DRY
H HEAT
d DEFROST
[Outdoor unit – Control state] (Request code :" 51")
Data display
0 0 0 0 Normal
0 0 0 1 Preparing for heat operation
0 0 0 2 Defrost
[Compressor – Frequency control state] (Request code :" 52")
Data display
0 0
Frequency control state
1
Display Current limit control
0 No current limit
1 Primary current limit control is ON.
2 Secondary current limit control is ON.
[Fan control state] (Request code :" 53 ")
Data display
0 0
Display Correction value
− (minus) −1
0 0
1
+1
+2
2
OCH816
Relay output state
Relay output state
Operation mode
State
Frequency control state
Display
Frequency control state 2
Frequency control state 1
Fan step correction value by heat sink temperature overheat prevention control
Fan step correction value by cool condensation temperature overheat prevention control
Power currently
Display Compressor
supplied to compressor
0 –
1
2
3
4
5
6
7
8
ON
A ON
2
Discharge temperature Condensation temperature
overheat prevention overheat prevention
0
1 Controlled
2 Controlled
3 Controlled Controlled
4
5 Controlled
6 Controlled
7 Controlled Controlled
8
9 Controlled
A Controlled
b Controlled Controlled
C
d Controlled
E Controlled
F Controlled Controlled
72
Four-way valve Solenoid valve
– –
ON
ON
ON
ON
ON ON
ON ON
ON
Anti-freeze Heat sink temperature
protection control overheat prevention
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
–
ON
ON
ON
ON
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled