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EasyStart LED Indicator Lights - Flashing Lights

EasyStart Solid Indicator Lights

This document explains fault indication on -BLUE and -UL models. All other models using three LED indications should see EasyStart Solid Indicator Lights for diagnostic information.

EasyStart is a device that once installed is a "set it and forget it" kind of device. However, it is always checking to make sure the system is functioning normally to prevent damage and will indicate what it sees through its indicator lights. These are LEDs on the EasyStart circuit board that greatly speed up any troubleshooting, including during installation.

A green power LED will light when power is applied to EasyStart. A short time later the compressor should start. If EasyStart detects a problem, it will flash a red LED to indicate a problem. There will be 1/2 second between flashes in a sequence and 1 second between repeating sequences. Continuous 1 second flashing indicates a single flash.

Self-Resetting faults will reset automatically and attempt a restart after three minutes. Some faults with the potential to cause damage are not self-reset and require removing power.

Note: Observing the physical LEDs may still be best for real time troubleshooting, however Bluetooth users (-BLUE models) can see this information from the App. See the EasyStart Bluetooth Diagnostics Manual (X36, X48 and X72 models only) for more information.

Flashing LED indicator Lights Table
Flashes Indication Self-Resetting
Steady Green EasyStart is powered and operating not applicable
Off EasyStart is not powered not applicable
Steady Green EasyStart is operating as expected without any active faults not applicable
3 Flash Green Short-Cycle Timer Active (FRM B27 or later) applicable
1 Flash Unexpected Current NA
2 Flash Over-Current applicable
3 Flash

Power Interruption (FRM B27 or later)

Power Interruption or Short Cycle Timer Active (FRM B26 and earlier)
4 Flash Overload/Klixon Open applicable
5 Flash Stall applicable
6 Flash Wrong Line Voltage NA
7 Flash Start Winding not Detected/Mis-wiring NA


  • Power Interruption: Power was lost for several AC line voltage cycles and EasyStart shut down to prevent an overload. It is normal for this to occur with natural power disruptions.
  • Short-Cycle Timer Active: The 3-minute short-cycle prevention timer is active and is normal operation. If the A/C shuts down and wants to start again in under 3 minutes, then EasyStart will prevent starting for the full 3 minutes. This ensures pressure has equalized in the system and a low current start can occur.
  • Stall: EasyStart is not seeing the condition where it can declare that the compressor motor is running at the correct speed. This means that the start failed, or the motor speed was reduced enough to stop the motor. There are many possibilities for this fault which can include:
- Voltage collapse of the power source - Failing run capacitor or compressor
- Voltage collapses due to poor wiring - Bad learn data
- Improper wiring - Wrong model EasyStart
  • Over-Current: The current measured by EasyStart has exceeded the maximum amount it allows. Be sure you have the correct model EasyStart for your system. Look at our troubleshooting guides at the bottom of the page and contact Micro-Air for further assistance if needed.
  • Overload/Klixon Open: The compressor overload switch has opened during operation and was detected by EasyStart. This indicates poor air or water flow, or a problem with the compressor or the switch itself.
  • Wrong Line Voltage: 120VAC only models. EasyStart (-X20 or -T36) has detected the line voltage exceeds ~150 volts and will not operate.
  • Start Winding Not Detected: One or more of the following wiring problems has occurred:
- The orange wire is not connected to the start winding (compressor "S" wire)
- The black wire is not connected to the common winding (compressor "C" wire)
- L2 is not connected to the run capacitor L2 (capacitor "C" terminal). This may occur if you do not grab the correct compressor "R" wire to connect to EasyStart brown.
- L2 is connected to the start winding (compressor "S" wire)
  • Unexpected Current: EasyStart sees a large current at the beginning of the start process. Verify the wiring, then perform a relearn on the unit and monitor for additional faults. If faults persist after relearning then contact Micro-Air for assistance.

Next Steps: Please use our troubleshooting guides below for additional information, including a troubleshooting workflow and steps to take when met with these faults.
Basic Troubleshooting Guide: EasyStart Trouble Shooting
Advanced Troubleshooting Guide: EasyStart Trouble Shooting