To Next PageTo Next PageWhat to do if my Carrier 48HE003---006 Air Conditioner has an ignition lockout?
If your Carrier Air Conditioner is experiencing an ignition lockout, meaning it unsuccessfully attempted ignition for 15 minutes, you should check the ignitor and flame sensor electrode spacing and gaps. Also, ensure that the flame sense and ignition wires are properly terminated and verify that the unit is obtaining the proper amount of gas.
What to do if my Carrier Air Conditioner shows a limit switch fault?
If your Carrier Air Conditioner shows a limit switch fault (LED 2 Flashes), it means that the high temperature limit switch is open. Check the operation of the indoor (evaporator) fan motor. Make sure that the supply-air temperature rise is within the range specified on the unit nameplate.
What to do if my Carrier 48HE003---006 has 4 consecutive limit switch faults?
If your Carrier Air Conditioner is showing 4 consecutive limit switch faults, it indicates inadequate airflow to the unit. Check the operation of the indoor (evaporator) fan motor and verify that the supply-air temperature rise agrees with the range on the unit nameplate information.
What does it mean when my Carrier Air Conditioner has a Rollout Switch Fault?
If your Carrier Air Conditioner displays a Rollout Switch Fault (LED 7 Flashes), it means the rollout switch has opened. The rollout switch will automatically reset, but the IGC will continue to lock out the unit. Check the gas valve operation and ensure that the induced-draft blower wheel is properly secured to the motor shaft. Reset the unit at the unit disconnect.
Why is the fan ON/OFF delay modified on my Carrier 48HE003---006?
If the fan ON/OFF delay is modified on your Carrier Air Conditioner, it could be because the high limit switch opens during the heat exchanger warm-up period before the fan-on delay expires, or the limit switch opens within three minutes after blower-off delay timing in Heating mode. To resolve this, ensure the unit is fired on the correct rate and that the temperature rise is correct. Also, make sure the unit’s external static pressure is within the application guidelines.
What does it mean when my Carrier 48HE003---006 displays an Induced-Draft Motor Fault?
If your Carrier Air Conditioner is showing an Induced-Draft Motor Fault (LED 6 Flashes), it means the IGC does not sense that the induced-draft motor is operating. Check for proper voltage to the motor. If the motor is operating, check the speed sensor plug/IGC Terminal J2 connection, ensuring the connection is correct: PIN 1— White, PIN 2 — Red, PIN 3 — Black.
What should I do if my Carrier 48HE003---006 has a Flame Sense Fault?
If your Carrier Air Conditioner is showing a Flame Sense Fault (LED 3 Flashes), it means that the IGC sensed a flame that should not be present. Reset the unit. If the problem persists, replace the control board.
What does it mean if my Carrier 48HE003---006 Air Conditioner displays an Internal Control Fault?
If your Carrier Air Conditioner is showing an Internal Control Fault (LED 8 Flashes), it means the microprocessor has sensed an error in the software or hardware. If resetting the unit power does not clear the error code, replace the IGC.
How to troubleshoot a Carrier 48HE003---006 hardware failure?
If your Carrier Air Conditioner has a hardware failure indicated by the LED being off, it suggests a loss of power to the control module (IGC). Check the 5 amp fuse on the IGC, the power to the unit, the 24-v circuit breaker, and the transformer. For units without a 24-v circuit breaker, there is an internal overload in the 24-v transformer; if the overload trips, allow 10 minutes for automatic reset.
General| Model Number | 48HE003---006 |
|---|---|
| Category | Air Conditioner |
| Energy Efficiency Ratio (EER) | 11.0 |
| Refrigerant Type | R-410A |
| Voltage | 208/230V |
| Phase | 1 |
| Sound Level (Outdoor Unit) | 72 dB |
Specific warning about electrical hazards during service operations.
Connecting field power supply, control wiring, and setting heat anticipators.
Explanation of the various control modes for the EconoMi$er IV system.
Detailed explanation of unit sequences for cooling/heating with/without economizers and Humidi-MiZer systems.
Detailed instructions for cleaning evaporator coils, condenser coils, condensate drains, filters, and screens.
Guide to checking and adjusting refrigerant charge using charts and procedures, including Humidi-MiZer system.
General troubleshooting steps and references to tables for unit issues.
Detailed troubleshooting procedures for the EconoMi$er IV system's various functions.
Checklist items to verify before initiating the unit's start-up sequence.
Section for recording electrical and pressure readings during the unit's initial start-up.
