Melans, Normal in case of 10V ~ | Mitsubishi Electronics PURY-P400

Symptom		Cause		Checking method & countermeasure
4 “88” appears on re-	[Generates at registration and confirmation]		a)	Confirm the address of unit to be
mote controller at	1)	Erroneous address of unit to be coupled.		coupled.
registration and	2)	Disconnection of transmission line of unit to be	b)	Check the connection of transmission
access remote		coupled (No connection).		line.
controller	3)	Faulty circuit board of unit to be coupled.	c)	Check the transmission terminal block
	4)	Installation miss of transmission line.		voltage of unit to be coupled.
				i) Normal if voltage is DC17 ~ 30V
				ii) Check the item d) in case other than i).
	[Confirmation of different refrigerant system controller]		d)	Confirm the power source of outdoor unit
	5)	Disconnection of power source of outdoor unit to be		to be coupled with the unit to be
		confirmed.		confirmed.
	6)	Disconnection of centralized control transmission	e)	Confirm that the centralized control
		line (TB7) of outdoor unit.		transmission line (TB7) of outdoor unit is
	7)	Power supply connector (CN40) is not inserted into		not disconnection.
		centralized control transmission line in grouping	f)	Confirm the voltage of centralized control
		with different refrigerant system without using		transmission line.
		MELANS.		i) Normal in case of 10V ~ 30V
	8)	More than 2 sets of power supply connector are		ii) Check the items 7) ~ 10) left in case
		inserted into the centralized control transmission line		other than i).
		of outdoor unit.
	9)	In the system connected with MELANS, power
		supply connector (CN40) is inserted into the
		centralized control transmission line of outdoor unit.

10)Short circuit of centralized control transmission line.

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PURY-P400, P500YMF-C specifications

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Mitsubishi Electronics PURY-P400, P500YMF-C specifications Melans, Normal in case of 10V ~

Models: PURY-P400 P500YMF-C

MELANS.

i) Normal in case of 10V ~ 30V

PURY-P400, P500YMF-C specifications