User Guide

DIAGNOSTICS

If the motor does not operate:

The Evergreen

VS motor will only operate if it is receiving line voltage AND communication input from the user interface (UI).

1. Measure the line voltage at the 5-pin plug connected to the motor. Use the HVAC system schematic if needed. If proper voltage is

not present, solve the issue with the HVAC system controls or wiring. If/when proper voltage is present (voltage matching the

rating on the motor), go to the next step.

2. Energize any thermostat demand. The “UI Input Indicator” LED should change from SOLID ON to CONTINUOUS BLINKING. If this

does not occur, measure the voltage between the RED (R) and BLUE (common) wires from the UI and between the BLUE

(common) and the UI thermostat wire that matches the thermostat demand. If both do not read 24 VAC, solve the issue with

the HVAC system controls or wiring. If/when the “UI Input Indicator” LED is continuously blinking, go to the next step.

3. The “Motor Indicator” LED should change from OFF to SOLID ON. Wait at least 2 minutes in case the On Delay has been set to

its maximum value.

– If the “Motor Indicator” LED DOES NOT change from OFF to SOLID ON and the motor does not operate after following the

steps above, the UI is failed and should be replaced.

– If the “Motor Indicator” LED DOES change from OFF to SOLID ON, but the motor does not operate after following the steps

above, remove the 4-pin plug from the motor and measure the voltage in the harness plug as described below.

– If the voltage between the yellow and blue wires measures 0 VDC, the UI is failed and should be replaced.

– If the voltage measured between the yellow and blue wires measures ≥ (greater than or equal to) 2 VDC, the motor is failed

and should be replaced.

NOTE: Please contact technical support (866-503-8566) before replacing the UI or the motor if possible to conﬁrm the

diagnosis.

If the airﬂow needs to be adjusted:

See page 7 (Commissioning) for information related to airﬂow adjustment if needed. If the airﬂow has been adjusted to its maximum

value, see the suggestions below.

– Measure the Total External Static Pressure (TESP). If it is higher than the HVAC unit manufacturer’s guidelines correct the airside

issue.

– If the motor is operating in the wrong direction there will be low airﬂow regardless of the airﬂow setting and very low amperage.

See below for instructions to change the rotation.

– It is possible the horsepower (HP) rating of the motor has been reduced with the Evergreen VS Optimizer™ tool. If this is

suspected, download the app (see page 9) and follow the instructions in the app to read the motor’s horsepower rating.

– If all of the issues have been corrected or ruled out and there is still insufﬁcient airﬂow, contact technical support (866-503-8566).

CHANGING ROTATION

If the motor has been operating in one direction for more than one minute and is not operating in the correct direction continue below.

If the motor has not been operating for more than a minute, energize the motor and wait for it to complete the rotation sensing

process described on page 3. If the motor is operating in the wrong direction of rotation after the rotation sensing process is complete

continue below.

Change rotation with the app. The Evergreen VS Optimizer tool can be used to change the rotation (see page 9).

Change rotation with the reversing harness. The Evergreen rotation reversing harness is available wherever Evergreen products are

sold, catalog # 5K016. The installation instructions are included with the part.