Johnson Controls 22 SEER installation manual UIM-B-0113, Error Codes - 18K 24K Continued

898841-UIM-B-0113

TABLE 13: Error Codes - 18K 24K (Continued)

						Display Method of Outdoor
		Display Method of Indoor Unit				Unit (Indicator has 3 kinds of
						display status and they will
						be repeated every 5s.)
	Malfunction
No.			Indicator Display (during				□ OFF			A/C status	Possible Reasons
	Name
		Dual-8		blinking,			■ Illuminated
		Code	ON 0.5s and OFF 0.5s)				☆ Blink
		Display
			Operation	Cool	Heating	D5	D6	D16	D30
			Indicator	Indicator	Indicator	(D40)	(D41)	(D42)	(D43)
	Outdoor									During cooling and drying	Outdoor temperature sensor
										operation, compressor stops
	condenser			OFF 3S							hasn’t been connected well or is
13	temperature	F4		and blink		□	□	☆	□	while indoor fan will	damaged. Please check it by
										operate; During heating
	sensor is open/			4 times						operation the complete unit	referring to the resistance table
	short circuited										for temperature sensor).
										will stop operation.
										During cooling and drying	1.Outdoor temperature sensor
	Outdoor									operation, compressor will	hasn’t been connected well or is
										stop after operating for about	damaged. Please check it by
	discharge			OFF 3S
										3 mins, while indoor fan will	referring to the resistance table for
14	temperature	F5		and blink		□	□	☆	☆
										operate; During heating	temperature sensor).
	sensor is open/			5 times						operation, the complete unit	2.The head of temperature sensor
	short circuited
										will stop after operating for	hasn’t been inserted into the
										about 3 mins.	copper tube.
	Limit/ decrease			OFF 3S						All loads operate normally,	Refer to the ProficienTECH Duct-
				and blink							less Splits Technical Training Man-
15	frequency	F6				■	□	☆	☆	while operation frequency for
				for 6							ual (overload, high temperature
	due to overload			times						compressor is decreased.	resistant).
	Decrease			OFF 3S						All loads operate normally,	The input supply voltage is too low;
16	frequency due	F8		and blink		■	■	□	■	while operation frequency for	System pressure is too high and
	to overcurrent			8 times						compressor is decreased.	overload.
	Decrease			OFF 3S						All loads operate normally,	Overload or temperature is too
	frequency due										high; Refrigerant is insufficient;
17		F9		and blink		■	■	□	□	while operation frequency for
	to high air										Malfunction of electric expansion
	discharge			9 times						compressor is decreased.	valve (EKV).
											1. Measure the voltage of position
											L and N on wiring board (XT), if the
										During cooling and drying	voltage is higher than 265VAC,
											turn on the unit after the supply
	Voltage for			OFF 3S						operation, compressor will	voltage is increased to the normal
										stop while indoor fan will	range.
18	DC bus-bar	PH		and blink		□	■	□	☆
										operate; During heating	2. If the AC input is normal
	is too high			11 times						operation, the complete	measure the voltage of electrolytic
										unit will stop operation.	capacitor C on control panel (AP1),
											if its normal, there’s malfunction for
											the circuit, please replace the con-
											trol panel (AP1).
										During cooling and drying
	Malfunction of			OFF 3S						operation, the compressor	There’s circuit malfunctionon out-
19	complete units									will stop while indoor fan	door units control panel AP1,
		U5		and blink		□	■	☆	■
	current									will operate; During heating	please replace the outdoor units
	detection			13 times						operating, the complete	control panel AP1.
										unit will stop operation.
										During cooling and drying	Refer to the ProficienTECH Duct-
	Overcurrent			OFF 3S						operation, compressor will	less Splits Technical Training Man-
20	protection of									stop while indoor fan will	ual (IPM protection, loss of
		P5		and blink		□	☆	□	□
	phase current									operate; During heating	synchronism protection and
	for compressor			15 times						operation, the complete	overcurrent protection of phase
										unit will stop operation.	current for compressor.
					OFF 3S					Defrosting will occur in
										heating mode. Compressor
21	Defrosting	H1			and blink						Its the normal state.
										will operate while indoor fan
					once					will stop operation.
	Static				OFF 3S
22	de-dusting	H2			and blink					/	/
	protection				twice
										During cooling and drying	1. Wiring terminal OVC-COMP is
											loosened. In normal state, the
	Overload				OFF 3S					operation, compressor will	resistance for this terminal should
										stop while indoor fan will	be less than 1ohm.
23	protection for	H3			and blink	□	☆	☆	□
										operate; During heating	2.Refer to the ProficienTECH
	compressor				3 times					operation, the complete	Ductless Splits Technical Training
										unit will stop operation.	Manual (discharge protection,
											overload).

38 Johnson Controls Unitary Products