Mitsubishi Electronics PURY-P400, P500YMF-C specifications 109, Slev

Checking code

1500 Overcharged refrigerant abnormality

1501	Lacked
	refrigerant
	abnormal-
	ity

Insufficient refrigerant abnormality

Meaning, detecting method			Cause	Checking method
1. When discharge superheart		1)	Excessive refrigerant charge.	Check refrigerant amount.
10 deg is keeping for 10 minutes
or discharge superheat	20	2)	Thermistor trouble (TH1).	Check resistance of thermistor.
deg for 15 minutes, outdoor unit
stops once, and after 3 minutes,		3)	Pressure sensor trouble (63HS).	See trouble shooting of pressure sensor.
the unit restarts.
For 60 minutes after unit stopped		4)	Control circuit board trouble.	Check temperature and pressure sen-
is intermittent fault check period.				sor with LED monitor.

2.When discharge superheart 10 deg is keeping for 10 minutes

or discharge superheat 20 deg for 15 minutes again (sec- ond time), the unit stops and er- ror code 1500 is displayed.

3.In case of SW2-6 ON, the de- tection for the second time is fol- lowed by the first time.

1. When the unit condition is as	1)	Gas leakage, insufficient gas.	Refer to the item on judging the refrig-
follows, the compressor is			erant volume.
stopped (1st detection) and af-
ter 3 minutes, the compressor	2)	Overload operation.	Check the indoor and outdoor unit op-
is restarted automatically.			erating conditions.
PUHY-P200·250YMF-C

1F<60Hz and TH10>85° C 3) Indoor unit LEV operation is faulty. Actually run the equipment in cooling

	continuously for 60 minutes.		4)	Outdoor unit SLEV operation is	or heating mode and check the operat-
2	F<60Hz and TH10>95° C			faulty.	ing condition.
	continuously for 15 minutes.				Cooling :	Indoor unit LEV
3	F	60Hz and TH10>100° C				SLEV
	continuously for 60 minutes.				Heating :	Indoor unit LEV
4	F	60Hz and TH10>110° C				SLEV
	continuously for 15 minutes.
PURY-P200·250YMF-C					Refer to the item concerning judging
1	F<60Hz and TH10>85° C				LEV failure.
	continuously for 60 minutes.
2	F<60Hz and TH10>95° C		5)	Ball valve operation is faulty.	Check with the ball valve fully open.
	continuously for 15 minutes.
3	F	60Hz and TH10>100° C	6)	The thermistor is faulty.	Check the thermistor’s resistance.
	continuously for 60 minutes.
4	F	60Hz and TH10>110° C	7)	The control board’s thermistor in-	Check the sensor’s temperature read-
	continuously for 15 minutes.			put circuit is faulty.	ing by the LED monitor.

2.If the temperature rises again as above within 2 hours after the out- door unit is stopped (2nd detection), an error stop is performed, and the check code 1501 is displayed.

3.If the temperature rises again as above within 2 hours after the out- door unit is stopped, it becomes the first detection again, and operation is the same as in 1 above.

4.The 2 hour period after the outdoor unit stops is the abnormal delay pe- riod, and LED display is carried out during the abnormal stop delay.

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