Bryant 577D----A installation instructions 577D-- --A, Rated Heating Input Btu/hr

577D-- -- A

Table 3 – Air Delivery and Temperature Rise at Rated Heating Input

	Rated Heating Input (Btu/hr)		Heating Rise Range oF (oC)				Heating Rise Either Stage, °F (oC)
Unit	High Stage	Low Stage	High Stage		Low Stage		“Efficiency”			“Comfort”
							High Stage		Low Stage	High Stage	Low Stage
577DNWA24040	40,000	26,000	20	--- 50	15	---45	35		30	40	35
577DNWA30040			(11	---28)	(8---25)		(19)		(17)	(22)	(19)
577DNWA30060	60,000	39,000	25	--- 55	25	--- 55		40		50
577DNWA36060
			(14	---31)	(14	---31)		(22)		(28)
577DNWA42060
577DNWA36090
577DNWA42090	90,000	58,500	35	--- 65	35	--- 65		50		55
577DNWA48090			(19	---36)	(19	---36)		(28)		(31)
577DNWA60090
577DNWA48115	115,000	75,000	30	--- 60	30	--- 60		45		50
577DNWA60115			(17	---33)	(17	---33)		(25)		(28)
577DNWA48130	130,000	84,500	35	--- 65	35	--- 65		50		55
577DNWA60130			(19	---36)	(19	---36)		(28)		(31)

Airflow delivery values for external static pressure values of up to 1 IN. W.C.

Table 4 – Heat Pump/Air Conditioner Board Status Codes

		AMBER LED
OPERATION	FAULT	FLASH	POSSIBLE CAUSE AND ACTION
		CODE
Standby – no call for unit operation	None	On solid, no	Normal operation.
		flash
	Standard Thermo-	Rapid, con-	Unit being controlled by standard thermostat inputs instead of Evolution
Emergency Mode		tinuous	Control. Only high stage operation is available. This operating mode
	stat Control
		flashing	should be used in emergency situations only.
Low Stage Cool/Heat Operation	None	1, pause	Normal operation.
High Stage Cool/Heat Operation	None	2, pause	Normal operation.
	System Communica-	16	Communication with UI lost. Check wiring to UI, indoor and outdoor units.
	tions Failure
	Invalid Model Plug	25	Control does not detect a model plug or detects an invalid model plug. Unit
			will not operate without correct model plug.
	High ---Pressure	31	High ---pressure switch trip. Check refrigerant charge, outdoor fan operation
	Switch Open		and coils for airflow restrictions.
	Low---Pressure	32	Low---pressure switch trip. Check refrigerant charge and indoor air flow.
	Switch Open
	Control Fault	45	Outdoor unit control board has failed. Control board needs to be replaced.
	Brown Out (230 v)	46	Line voltage < 187v for at least 4 seconds. Compressor and fan operation
			not allowed until voltage>190v. Verify line voltage.
			There is no 230v at the contactor when indoor unit is powered and cooling/
	No 230v at Unit	47	heating demand exists. Verify the disconnect is closed and 230v wiring is
			connected to the unit.
	Outdoor Air Temp	53	Outdoor air sensor not reading or out of range. Ohm out sensor and check
	Sensor Fault		wiring.
	Outdoor Coil Sensor	55	Coil sensor not reading or out of range. Ohm out sensor and check wiring.
	Fault
	Thermistors Out of	56	Improper relationship between coil sensor and outdoor air sensor. Ohm out
	Range		sensors and check wiring.
	Low Stage Thermal		Compressor voltage sensed, then disappears while cooling or heating de-
		71	mand exists. Possible causes are internal compressor overload trip or start
	Cutout
			relay not releasing (if installed).
	High Stage Thermal		Compressor voltage sensed, then disappears while cooling or heating de-
		72	mand exists. Possible causes are internal compressor overload trip or start
	Cutout
			relay not releasing (if installed).
	Contactor Shorted	73	Compressor voltage sensed when no demand for compressor operation
			exists. Contactor may be stuck closed or there is a wiring error.
	No 230V at Com-	74	Compressor voltage not sensed when compressor should be starting. Con-
	pressor		tactor may be stuck open or there is a wiring error.
	Low Stage Thermal	81	Thermal cutout occurs in three consecutive low/ high stage cycles. Low
	Lockout		stage locked out for 4 hours or until 24v power recycled.
	High Stage Thermal	82	Thermal cutout occurs in three consecutive high/low stage cycles. High
	Lockout		stage locked out for 4 hours or until 24v power recycled.
	Low---Pressure Lock-	83	Low---pressure switch trip has occurred during 3 consecutive cycles. Unit
	out		operation locked out for 4 hours or until 24v power recycled.
	High ---Pressure	84	High ---pressure switch trip has occurred during 3 consecutive cycles. Unit
	Lockout		operation locked out for 4 hours or until 24v power recycled.

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