Mitsubishi Electric PUHZ-W50VHA Service Manual page 100

9-9-1. 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 2
Frequency control state 1
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
OCH439M
Relay output state
Display
Relay output state
Operation mode
State
Frequency control state
Display
Fan step correction value by heatsink temperature overheat prevention control
Fan step correction value by cool condensation temperature overheat prevention control
Power currently
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
100
4-way valve Solenoid valve
– –
ON
ON
ON
ON
ON ON
ON ON
ON
Anti-freeze Heatsink temperature
protection control overheat prevention
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled Controlled
Controlled Controlled
Controlled Controlled
Controlled Controlled
–
ON
ON
ON
ON