Carrier 48TJD, TJF004, TJF005-007, TJE EconoMi$er Troubleshooting, Problem Potential Cause Remedy

Table 36 — EconoMi$er Troubleshooting

PROBLEM	POTENTIAL CAUSE	REMEDY
Damper Does Not	Indoor (Evaporator) Fan is Off	Check to ensure that 24 vac is present at Terminal C1 (Common Power)
Open		on the IFC (Indoor [Evaporator] Fan Contactor) or that 24 vac is present at
		the IFO (Indoor [Evaporator] Fan On) terminal. Check whether 24 vac is
		present at PL6-1 (red wire) and/or PL6-3 (black wire). If 24 vac is
		not present, check wiring (see unit label diagram).
		Check proper thermostat connection to G on the connection board.
	No Power to EconoMi$er Controller	Check to ensure that 24 vac is present across Terminals 24 VAC and
		24V COM on the EconoMi$er control. If 24 vac is not present, check wiring
		(see unit label diagram). If 24 vac is present, STATUS light should be on
		constantly.
	No Power to G Terminal	If IFM is on, check to ensure 24 vac is present on G Terminal of the
		EconoMi$er controller. If 24 vac is not present, check wiring (see unit
		label diagram).
	Controller Fault	If STATUS light is flashing one flash, the EconoMi$er controller is
		experiencing a fault condition. Cycle power to the controller. If condition
		continues, replace the EconoMi$er controller.
	Thermostat Fault	If STATUS light is flashing two flashes, the EconoMi$er controller senses
		the thermostat is wired incorrectly. Check wiring between the thermostat
		and the connection board in the electrical panel. The fault condition is
		caused by Y2 being energized before Y1.
	Actuator Fault	Check the wiring between the EconoMi$er controller and the actuator.
		Hold CONFIG button between 3 and 10 seconds to verify the
		actuator’s operation. (This process takes 3 minutes to complete.)
EconoMi$er	Minimum Position Set Incorrectly	Verify that the MIN POS (%) is set greater than zero. Adjust MIN POS (%)
Operation Limited to		to 100% to verify operation, and then set to correct setting.
Minimum Position	EconoMi$er Changeover Set Point Set Too	Set at correct value. See Table 3.
	High or Too Low
	Supply Air Temperature Sensor Faulty	If STATUS light is flashing 4 flashes, Supply Air Temperature Sensor is
		faulty. Check wiring or replace sensor.
	Outdoor Air Temperature Sensor Faulty	If STATUS light is flashing 5 flashes, Outdoor Air Temperature Sensor is
		faulty. Check wiring or replace sensor.
Damper Position	Supply Air Low Limit Strategy Controlling	The supply-air temperature is less than 45 F, causing the minimum
Less than Minimum		position to decrease. Refer to the Start-Up instructions. Verify correct
Position Set Point		setting of MIN POS (%). If correct, EconoMi$er is operating correctly.
Damper Does Not	CO2 Ventilation Strategy Controlling	If a CO2 sensor is being used, and the damper position is greater than
Return to Minimum		minimum position, the ventilation control strategy is controlling. Refer to
Position		the Start-Up instructions. EconoMi$er is operating correctly.
Damper Does Not	Damper Travel is Restricted	Check to ensure the damper is not blocked.
Close on Power Loss

LEGEND

PL — Plug

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