Carrier 50HQP072-120 specifications Service, Complete C Control LED Code, Fault Descriptions

			Table 15 — Complete C Control LED Code and
				Fault Descriptions
	LED		FAULT	DESCRIPTION
CODE
	1		No fault in memory	There has been no fault since the last power-down to power-up sequence
	2		High-Pressure Switch	HP open instantly
	3		Low-Pressure Switch	LP open for 30 continuous seconds before or during a call (bypassed for first 60 seconds)
	4		Freeze Protection Coax — FP1	FP1 below Temp limit for 30 continuous seconds (bypassed for first 60 seconds of operation)
	5		Freeze Protection Air Coil — FP2	FP2 below Temp limit for 30 continuous seconds (bypassed for first 60 seconds of operation)
	6		Condensate overflow	Sense overflow (grounded) for 30 continuous seconds
	7		Over/Under Voltage Shutdown	"R" power supply is <19VAC or >30VAC
(Autoreset)
	8		PM Warning	Performance Monitor Warning has occurred.
	9		FP1 and FP2 Thermistors are swapped	FP1 temperature is higher than FP2 in heating/test mode, or FP2 temperature is higher than FP1 in cooling/
				test mode.
		LEGEND
FP	— Freeze Protection
HP	— High Pressure
LED — Light-Emitting Diode
LP	— Low Pressure
PM	— Performance Monitor

Table 16 — Aquazone™ Deluxe D Control Current LED Status and Alarm Relay Operations

DESCRIPTION	STATUS LED	TEST LED	FAULT LED (Red)	ALARM RELAY
	(Green)	(Yellow)
Normal Mode	On	Off	Flash Last Fault Code in Memory	Open
Normal Mode with PM	On	Off	Flashing Code 8	Cycle (closed 5 sec,
				open 25 sec, …)
Deluxe D Control is	Off	Off	Off	Open
non-functional
Test Mode	—	On	Flash Last Fault Code in Memory	Cycling Appropriate Code
Night Setback	Flashing Code 2	—	Flash Last Fault Code in Memory	—
ESD	Flashing Code 3	—	Flash Last Fault Code in Memory	—
Invalid T-stat Inputs	Flashing Code 4	—	Flash Last Fault Code in Memory	—
No Fault in Memory	On	Off	Flashing Code 1	Open
HP Fault	Slow Flash	Off	Flashing Code 2	Open
LP Fault	Slow Flash	Off	Flashing Code 3	Open
FP1 Fault	Slow Flash	Off	Flashing Code 4	Open
FP2 Fault	Slow Flash	Off	Flashing Code 5	Open
CO Fault	Slow Flash	Off	Flashing Code 6	Open
Over/Under Voltage	Slow Flash	Off	Flashing Code 7	Open (closed after 15 minutes)
HP Lockout	Fast Flash	Off	Flashing Code 2	Closed
LP Lockout	Fast Flash	Off	Flashing Code 3	Closed
FP1 Lockout	Fast Flash	Off	Flashing Code 4	Closed
FP2 Lockout	Fast Flash	Off	Flashing Code 5	Closed
CO Lockout	Fast Flash	Off	Flashing Code 6	Closed

LEGEND

CO — Condensate Overflow

ESD — Emergency Shutdown

FP — Freeze Protection

HP — High Pressure

LP — Low Pressure

PM — Performance Monitor

NOTES:

1.If there is no fault in memory, the Fault LED will flash code 1.

2.Codes will be displayed with a 10-second Fault LED pause.

3.Slow flash is 1 flash every 2 seconds.

4.Fast flash is 2 flashes every 1 second.

5.EXAMPLE: “Flashing Code 2” is represented by 2 fast flashes fol- lowed by a 10-second pause. This sequence will repeat continually until the fault is cleared.

SERVICE

Perform the procedures outlined below periodically, as indicated.

IMPORTANT: When a compressor is removed from this unit, system refrigerant circuit oil will remain in the com- pressor. To avoid leakage of compressor oil, the refrigerant lines of the compressor must be sealed after it is removed.

IMPORTANT: All refrigerant discharged from this unit must be recovered without exception. Technicians must fol- low industry accepted guidelines and all local, state and fed- eral statutes for the recovery and disposal of refrigerants.

IMPORTANT: To avoid the release of refrigerant into the atmosphere, the refrigerant circuit of this unit must only be serviced by technicians which meet local, state and federal proficiency requirements.

IMPORTANT: To prevent injury or death due to electrical shock or contact with moving parts, open unit disconnect switch before servicing unit.

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