(12) Emergency response operating mode

The emergency operation mode is a mode in which the unit is run in an emergency to respond to the trouble when the compressors (No. 1, No. 2) break down, making it possible to carry out a abnormality reset using the remote control.

1) Starting the Emergency Operation Mode

1Trouble occurs (Display the abnormality code root and abnormality code on the remote control).

2Carry out trouble reset with the remote control.

3If the abnormality indicted in 1 above is of the kind that permits emergency operation (see the table below), initiate a retry operation.

If the trouble indicated in 1 above is of the kind where emergency operation is impossible (see the table below), restart operation after carrying out the previous abnormality reset (without entering the emergency operation

mode).

4If the same abnormality is detected again during the retry operation in 3 above, carry out trouble reset once more with the remote control, then try emergency operation starting corresponding to the contents of the abnormality

Table Emergency Operation Mode Patterns and Abnormality Codes for which Emergency Operation is Possible or Impossible

Emergency Mode

Codes for which emergency operation is

Abnormality Codes for

 

which Emergency

Action

Pattern

possible.

 

 

Operation is Impossible

 

 

 

 

 

 

 

 

 

 

When a No. 1

Serial transmission abnormality

0403

 

Emergency Operation only with the

Compressor Failure

VDC sensor/circuit abnormality

4200

 

No. 2 Compressor

Occurs

Bus voltage abnormality

4220

Trouble codes other than

* After the retry operation, even if

 

Radiator panel overheat

 

those at left.

there is a different abnormality

 

protection

4230

 

code detected within <Inverter

 

Overcurrent protection

4240

 

Abnormality> at left, press the

 

IPM alarm output

4250

 

button and after resetting, start

 

/Bus voltage abnormality

 

 

the unit by emergency operation.

 

Thermal sensor abnormality

 

 

[Example]

 

(Radiator panel)

5110

 

4250 Reset Retry 4240

 

IAC sensor/circuit abnormality

5301

 

Reset Emergency

 

 

 

 

operation

 

 

 

 

 

When No. 2

Overcurrent protection

 

 

Emergency Operation only with the

Compressor Failure

 

 

 

No. 1 Compressor

Occurs

 

 

 

 

 

 

 

 

 

Caution

During emergency operation, only X marked percentage of indoor units can be operated during emergency operation. In case, more than X marked percentage of indoor units are operated, over than the percentage of indoor units would be on the stand-by mode.

 

 

400

 

500

No. 1 Compressor Failure

48 %

65 %

No. 2 Compressor Failure

65 %

65 %

 

 

 

 

 

–48–

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Mitsubishi Electronics P500YMF-C, PURY-P400 Emergency response operating mode, 400 500 No Compressor Failure 48 % 65 %

PURY-P400, P500YMF-C specifications

Mitsubishi Electronics has long been a leader in the HVAC industry, known for its innovative technology and reliable performance. Among its notable offerings are the P500YMF-C and PURY-P400 models, designed to address the diverse needs of commercial and residential applications.

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