Mitsubishi Electronics PURY-P400, P500YMF-C specifications 115, Th Hs, Thhs TH5, TH8

Checking code

4260	Cooling fan
	abnormality
5101		Discharge
		(TH11, TH12)
5102		Low
		pressure
		saturation
		(TH2)
5103		Liquid level
		detection
		(TH3)
5104	Unit)	Liquid level
		detection
	(Outdoor	(TH4)
5105		exchanger
		Heat
	abnormality	inlet pipe
		tempera-
		(TH5)
5106		Ambient
	sensor	ture (TH6)
5107		Heat
	Thermal	exchanger
		outlet pipe
		(TH7)
5109		CS circuit
		(TH9)
5110		Radiator
		panel
		(TH HS)
5112		Compres-
		sor shell
		tempera-
		ture
		(TH10)
5111
		Liquid inlet
	controlled)	(TH11)
		Bypass
	(BC
		outlet
	abnormality	(TH12)
	Thermalsensor	Bypass
		inlet
		(TH15)
		Intermedi-
		ate section
		(TH16)

Meaning, detecting method		Cause	Checking method & Countermeasure
If the heat sink temperature (THHS)	1)	Same as “4230.”	Same as “4230.”
100° C for 20 minutes or longer just
before the inverter starts.
<Other than THHS>	1)	Thermistor	Check the thermistor’s resistance.

1A short in the thermistor or an

open circuit was sensed. The	2)	Lead wires are being pinched.	Check if the lead wires are pinched.
outdoor unit switches to the
temporary stop mode with re-	3)	Insulation is torn.	Check for tearing of the insulation.
starting after 3 minutes, then if
the temperature detected by the	4)	A connector pin is missing, or there	Check if a pin is missing on the con-
thermistor just before restarting		is faulty contact.	nector.
is in the normal range, restart-
ing takes place.	5)	A wire is disconnected.	Check if a wire is disconnected.

2If a short or open circuit in the

thermistor is detected just be- 6) The thermistor input circuit on the Check the temperature picked up by

fore restarting, error code

MAIN circuit board is faulty.

the sensor using the LED monitor.

“5101”, “5102”, “5103”, “5104”,

(In the case of the THHS, replace

If the deviation from the actual tem-

“5105”, “5106”, “5108”, “5109”

the INV board.)

perature is great, replace the MAIN cir-

or “5112” is displayed.

cuit board.

3 In the 3 minute restart mode,

(In the case of the THHS, replace the

the abnormal stop delay LED is

INV board.)

displayed.

4 The above short or open circuit

Short Circuit Detection

Open Circuit Detection

is not detected for 10 minutes

after the compressor starts, or

TH11, TH12

240

°

Ω

)

15

°

C or lower (321 k

Ω

)

for 3 minutes during defrosting

C or higher (0.57 k

TH2

70

°

C or higher (1.71 k

Ω

)

-40

°

C or lower (130 k

Ω

)

or after recovery following de-

°

Ω

°

Ω

TH3

70

C or higher (1.71 k

)

-40

C or lower (130 k

)

frosting.

°

Ω

°

Ω

TH4

70

C or higher (1.71 k

)

-40

C or lower (130 k

)

<THHS>

TH5

°

Ω

)

-40

°

C or lower (130 k

Ω

)

If a heat sink (THHS) temperature

110 C or higher (0.4 k

TH6

°

Ω

)

-40

°

C or lower (130 k

Ω

)

of -40°C is detected just after the

110 C or higher (0.4 k

TH7

°

Ω

)

-40

°

C or lower (130 k

Ω

)

inverter starts or during inverter

110 C or higher (1.14 k

TH8

70˚C or higher (1.14 kΩ )

-40°C or lower (130 kΩ

)

operation.

TH9

70

°

C or higher (1.14 k

Ω

)

-40

°

C or lower (130 k

Ω

)

THHS

-40°C or lower (2.5 MΩ

)

TH10

240° C or higher (0.57 kΩ

)

-15°C or lower (1656 kΩ )

1. When short (high temp. inlet) or	1)	Thermistor trouble.			Check thermistor resistance.
open (low temperature inlet) of	2)	Biting of lead wire.			Check lead wire biting.
thermistor is detected during
operation, error stop will be	3)	Broken cover.			Check broken cover.
commenced displaying “5111”
or “5112”, “5113” or “5114”, or	4)	Coming off of pin at connector por-			Check coming off of pin at connector.
“5115” or “5116.
2. The above detectection is not		tion, poor contact.
made during defrostig and 3-	5)	Broken wire.			Check broken wire.
minute after changing operation
mode.	6)	Faulty thermistor input circuit of			Check sensor sensing temperature. If
		control board.			it deviates from the actual temerature
					seriously, replace control panel.
			Short Detected		Open Detected
		TH11	110° C or more (0.4 kΩ	)	-40°C or less (130 kΩ	)
		TH12	110° C or more (0.4 kΩ	)	-40°C or less (130 kΩ	)
		TH15	70° C or more (1.14 kΩ	)	-40°C or less (130 kΩ	)
		TH16	70° C or more (0.4 kΩ )		-40°C or less (130 kΩ	)

–115–