HP H2H3, N2H3 manual Comfort Alertt Diagnostics some models, Red Trip LED, On Solid, Yellow Alert

INSTALLATION INSTRUCTIONS			3-phase R-22 Split System Heat Pump
Figure 18	Comfort Alertt Diagnostics (some models)
Status LED	Status LED Description		Status LED Troubleshooting Information
Green “POWER”	Module has power	Supply voltage is present at module terminals
Red “TRIP” LED	Thermostat demand signal	1. Compressor protector is open
On Solid	Y1 is present, but the	2. Outdoor unit power disconnect is open
	compressor is not running	3.	Compressor circuit breaker or fuse(s) is open
		4.	Broken wire or connector is not making contact
		5.	Compressor power wires not routed through Comfort Alert
		6.	Compressor contactor has failed open
Red “TRIP”	The anti-short cycle timer (3	minutes), in module is preventing compressor restart.
LED Flashing

Module locks out compressor when compressor damaging ALERT codes appear. Lockout ALERT codes are noted in the Status LED Description; during a compressor lockout, 24VAC power must be removed from module to manually reset.

Yellow “ALERT”	A short circuit or over	1.	Compressor contact coil shorted
LED On Solid	current condition exists on	2.	Electrical load too high for PROT circuit (maximum) 1 amp
	PROT terminal	3.	24 VAC wired directly to PROT terminal
Yellow “ALERT”	System Pressure Trip	1.	High head pressure
Flash Code 2	Discharge or suction	2.	Condenser coil poor air circulation (dirty, blocked, damaged)
	pressure out of limits or
		3.	Condenser fan is not running
	compressor overloaded (if
	no high pressure switch in	4.	If low pressure switch present in system, check Flash Code 3
	system) LOCKOUT		information
Yellow “ALERT”	Short Cycling	1.	If low pressure switch is open:
Flash Code 3	Compressor is running only		a. Low refrigerant charge
	briefly LOCKOUT		b. Evaporator bower is not running
			c. Evaporator coil is frozen
			d. Faulty metering device
			e. Condenser coil is dirty
			f. Liquid line restriction
		2. If high pressure switch present go to Flash Code 2 information
		3.	Intermittent thermostat demand signal
		4.	System or control board defective
Yellow “ALERT”	Locked Rotor	1.	Low line voltage to compressor
Flash Code 4	LOCKOUT	2.	Excessive liquid refrigerant in compressor
		3.	Compressor bearings are seized
Yellow “ALERT”	Open Circuit	1.	Outdoor unit power disconnect is open
Flash Code 5		2.	Compressor circuit breaker or fuse(s) is open
		3.	Compressor contactor has failed open
		4.	High pressure switch is open and requires manual reset
		5.	Broken supply wires or connector is not making contact
		6.	Unusually long compressor protector reset time due to
			extreme ambient temperature
		7.	Compressor windings are damaged
Yellow “ALERT”	Missing Phase	1.	Compressor fuse is open on one phase
Flash Code 6	LOCKOUT	2.	Broken wire or connector on one phase
		3.	Compressor motor winding is damaged
		4.	Utility supply has dropped one phase
Yellow “ALERT”	Reverse Phase	1.	Compressor running backward do to supply phase reversal
Flash Code 7	LOCKOUT
Yellow “ALERT”	Welded Contactor	1.	Compressor contactor has failed closed
Flash Code 8	Compressor always runs	2.	Thermostat demand signal not connected to module
Yellow “ALERT”	Low Voltage	1.	Control circuit transformer is overloaded
Flash Code 9	Control circuit < 18VAC	2.	Low line voltage to compressor

S Flash Code number corresponds to a number of LED flashes, followed by a pause and then repeated. S TRIP and ALERT LEDs flashing at same time means control circuit voltage is too low for operation.

S Reset ALERT Flash code by removing 24VAC power from module.

S Last ALERT Flash code is displayed for 1 minute after module is powered on.

S ALERT codes can be reset manually or automatically. ALERT codes that result in a lockout or compressor lockout can only be reset manually.

-For manual reset, cycle power to Comfort Alert off and on.

-For automatic reset, Comfort Alert will continue to monitor compressor and system; if condition returns to normal, the ALERT code is automatically turned off.

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