Mitsubishi Electric PUHZ-P125 Service Manual download pdf (Page 72)

SW2 setting

Display detail

Explanation for display Unit

0~255

(When the temperature is 100°C or more, hundreds

digit, tens digit and ones digit are displayed by

turns.)

(Example) When 150°C;

0.5 secs. 0.5secs. 2 secs.

Sub cool on error occurring. SC

0~130

Cooling = TH6-TH3

Heating = TH5-TH2

0~130

(When the temperature is 100°C or more, hundreds

digit, tens digit and ones digit are displayed by

turns.)

(Example) When 115°C;

0.5 secs. 0.5secs. 2 secs.

Thermo-on time until error stops

0~999

(When it is 100 minutes or more, hundreds digit, tens

digit and ones digit are displayed by turns.)

(Example) When 415 minutes;

0.5 secs. 0.5secs. 2 secs.

Indoor pipe temperature / Liquid

(TH2 (3))

Indoor 3

-39~88

(When the temperature is 0°C or less, “–” and

temperature are displayed by turns.)

Indoor pipe temperature / Cond./ Eva.

(TH5 (3))

Indoor 3

-39~88

(When the temperature is 0°C or less, “–” and

temperature are displayed by turns.)

When there is no indoor unit, “00” is displayed.

23456

Discharge super heat on error occurring

SHd

0~255

Cooling = TH4-TH6

Heating = TH4-TH5

23456

Minute

23456

Normal

Overvoltage error

Undervoltage error

Input current sensor error

1-phase open error

Abnormal power synchronous signal

PFC/ACTM errorUndervoltage

 Display examples for multiple errors:

Overvoltage (01) + Undervoltage (02) = 03

Undervoltage (02) + Power-sync signal error (08) = 0A

Power circuit board

Controller circuit board

Power circuit board

Check CNAF wiring.

Defective ACTM/ P.B.

—

Description Detection point Display

U9 Error status during the Error

postponement period

Code

display

1 2 ... 67 68 69 70 71 72 73 74 75 76 77 ... 101 102

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Mitsubishi Electric PUHZ-P125 Service Manual Page 72

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