Johnson Controls 22 SEER UIM-B-0113, Johnson Controls Unitary Products, Error Codes - 18K 24K

898841-UIM-B-0113

TABLE 13: Error Codes - 18K 24K

						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)
										During cooling and drying	Possible reasons:
	High pressure									operation, except indoor fan	1. Refrigerant was overcharged;
			OFF 3s and							operates, all loads stop	2. Poor heat exchange (including
1	protection	E1				□	☆	☆	☆
			blink once							operation. During heating	filth blockage of heat exchanger
	of system									operation, the complete	and bad radiating environment);
										unit stops.	Ambient temperature is too high.
	Antifreezing		OFF 3S							During cooling and drying	1. Poor air-return in indoor unit;
2										operation, compressor and
		E2	and blink			■	□	■	□		2. Fan speed is abnormal;
	protection		twice							outdoor fan stop while indoor	3. Evaporator is dirty.
										fan operates.
	High discharge									During cooling and drying	Please refer to the ProficienTECH
			OFF 3S							operation, compressor and
3	temperature										Ductless Splits Technical Training
		E4	and blink			■	□	■	☆	outdoor fan stop while indoor
	protection of		4 times							fan operates. During heating	Manual (discharge protection,
	compressor										overload).
										operation, all loads stop.
			OFF 3S							During cooling and drying	1. Supply voltage is unstable;
	Overcurrent									operation, compressor and
4											2. Supply voltage is too low an
		E5	and blink			□	■	☆	□	outdoor fan stop while indoor
	protection		5 times							fan operates. During heating	load is too high;
											3. Evaporator is dirty.
										operation, all loads stop.
			OFF 3S							During cooling operation,
5	Communication									compressor stops while	Refer to the corresponding
		E6	and blink 6			□	□	□	☆	indoor fan motor operates.	ProficienTECH Ductless Splits
	Malfunction
			times							During heating operation,	Technical Training Manual.
										the complete unit stops.
	High		OFF 3S							During cooling operation:	Refer to the ProficienTECH Duct-
										compressor will stop while	less Splits Technical Training Man-
6	temperature
		E8	and blink			■	□	■	■	indoor fan will operate.	ual
	resistant
			8 times							During heating operation,	(overload, high temperature
	protection
										the complete unit stops.	resistant).
	Circuit PG
	motor (indoor		OFF 3S							Operation of remote
7	fan) has circuit									controller or control panel is
		U8	and blink								Control board is damaged.
	malfunction									available, but the unit wont
			for 17 times
	by zero cross									act.
	detection
											Poor connection for PGF in circuit
	PG motor		OFF 3S								diagram;
8	(indoor fan									The complete unit will stop	Malfunction of indoor units control
		H6	and blink
	motor) does									operation.	panel AP1;
			11 times
	not operate										Malfunction of indoor units motor
											M1.
	Malfunction		OFF 3S							The complete unit will stop	Poor connection for the jumper cap
											on indoor units control panel AP1;
9	protection of	C5	and blink
										operation.	please reinsert or replace the
	jumper cap		15 times
											jumper cap;
										During cooling and drying	1.Room temperature sensor hasn’t
	Indoor ambient										been connected well with indoor
				OFF 3S						operation, indoor unit
											units control panel AP1 (refer to
10	temperature									operates while other loads
		F1		and blink							the wiring diagram for indoor unit);
	sensor is open/									will stop; during heating
				once							2.Room temperature sensor is
	short circuited									operation, the complete
											damaged (please refer to the resis-
										unit will stop operation.
											tance table of temperature sensor)
										During cooling and drying	1.Room temperature sensor hasn’t
	Indoor evapora-										been connected well with indoor
				OFF 3S						operation, indoor unit will
											units control panel AP1 (refer to
11	tor temperature									operate while other loads
		F2		and blink							the wiring diagram for indoor unit);
	sensor is open/									will stop; During heating
				twice							2.Room temperature sensor is
	short circuited									operation, the complete
											damaged (please refer to the resis-
										unit will stop operation.
											tance table of temperature sensor)
	Outdoor									During cooling and drying	Outdoor temperature sensor
				OFF 3S						operating, compressor stops
	ambient									while indoor fan operates;	hasn’t been connected well or is
12	temperature	F3		and blink		□	□	☆	■		damaged. Please check it by
										During heating operation,
	sensor is open/			3 times						the complete unit will stop	referring to the resistance table
	short circuited										for temperature sensor).
										operation.

Johnson Controls Unitary Products 37