Hunter Fan R410A manual cCheck method when the error code is display, Error display No display

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(c)Check method when the error code is display

Remote controller or Indication board: Inspection LED, error code

Indoor unit PCB: Red LED (inspection display), Green LED (CPU. normal display)

Outdoor unit PCB: ARed LED (inspection display), Green LED (CPU. normal display)

Error display : No display	[Power supply line error]
LCD display : No display

	Indoor unit		Outdoor unit
Red LED		Stays OFF	Red LED	Stays OFF
Green LED		Stays OFF	Green LED	Stays OFF

Note (1) The green LED in the outdoor unit is used in the FDCA301 ~ 601 models only.

Start

Is the voltage		NO		Voltage between		YES
between 1 and 2/N of the indoor				1 and 2/N of the outdoor unit’s
unit’s terminal block				terminal block is
AC220/240V?				AC220/240V.
	YES				NO
				Outdoor unit check
Fuse		NO	Disconnect the transformer’s primary side
			(CNW1) and measure the resistance on
OK?
			both ends of CNW1 (using a tester, etc.).
	YES	Notes (1)	In models other than FDT, replace the fuse.
		(2) FDT only

Control lines connected wrong or disconnected.

Several 10K Ω or higher.		NO	Replacement indoor unit
			power supply PCB
	YES

Fuse exchange

Is the voltage at	NO
CNW3 or 10(1) (red – red) on the		Transformer exchange
transformer’s secondary side
14 V or higher?
	Note (1) In models other than FDT, it is CNW2.

YES

(1)(2)
Is the voltage	NO
between CNW5 2 and 3
DC 12V?

Replacement indoor unit power supply PCB

YES

Note (1) 3 is GND

(1)(2)
	Is the voltage		NO
between CNW8 2 and 3				Harness disconnection
	DC 12V?
		YES
	Does it return		YES
				Unit is normal.
to normal when the power
				(Malfunction was due to noise, etc.)
	supply is reset?
		NO
	Replacement indoor unit
	control PCB

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