Mitsubishi Electric PUHZ-FRP71VHA2 Service Manual page 77

12-2-1. Detail Contents in Request Code
Request code
Ref.address
Request code
Request:
Cursor
[Operation state] (Request code ": 0 ")
Data display
C 4
Operation mode
Display Operation mode
0 STOP • FAN
C COOL • DRY
H HEAT
d DEFROST
[Indoor unit – Control state] (Request code :" 50 ")
Data display
[Outdoor unit – Control state] (Request code ": 5 1")
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 ": 5 2")
Data display
0 0
1
Frequency control state
Display Current limit control
0 No current limit
1 Primary current limit control is ON.
2 Secondary current limit control is ON.
OCH665B
Example) Request code "004"
Discharge temperature 156°F
Refrigerant address "00"
Relay output state
Display
Relay output state
Operation mode
Unit No. 4 state
Unit No. 3 state
Unit No. 2 state
Unit No. 1 state
State
Frequency control state
Frequency control state 2
Frequency control state 1
Power currently
Power currently
Display Compressor
supplied to compressor
supplied to compressor
0 0 – –
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
ON
8 ON
ON
A
A ON
Display State
0 Normal
1 Preparing for heat operation.
2 –
3 –
4 Heater is ON.
5 Anti-freeze protection is ON.
6 Overheat protection is ON.
7 Requesting compressor to turn OFF.
F There are no corresponding units.
2
Discharge temperature Condensation temperature
Display
overheat prevention overheat prevention
0
1 Controlled
2
3 Controlled
4
5 Controlled
6
7 Controlled
8
9 Controlled
A
b Controlled
C
d Controlled
E
F Controlled
77
Compressor 4-way valve 4-way valve Solenoid valve
– – – –
ON
ON
ON
ON
ON
ON
ON
ON
ON ON
ON ON
ON ON
ON ON
ON
ON
Anti-freeze
protection control
Controlled
Controlled
Controlled
Controlled
Controlled Controlled
Controlled Controlled
Controlled
Controlled
Controlled
Controlled
Controlled Controlled
Controlled Controlled
Solenoid valve
– –
ON
ON
ON
ON
ON
ON
ON
ON
Heat sink temperature
overheat prevention
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled