Goodman Mfg RT6100004R13 S-16CCHECKING ECM MOTOR WINDINGS, S-16DECM CFM ADJUSTMENTS, Servicing

SERVICING

1}Lines 1 and 2 will be connected for 12OVAC Power Connector

2applications only

3Gnd

4AC Line Connection

5AC Line Connection

	OUT -		8	16		OUT +
ADJUST +/-
			7		15	G (FAN)
		Y1	6	14		Y/Y2
5		13	EM Ht/W2
					COOL
						24 Vac (R)
			4		12
	DELAY
			3	11		HEAT
COMMON2
		W/W1				BK/PWM (SPEED)
			2		10
COMMON1						O (REV VALVE)
			1	9

16-PIN ECM HARNESS CONNECTOR

If you do not read voltage and continuity as described, the problem is in the control or interface board, but not the motor. If you register voltage as described , the ECM power head is defective and must be replaced.

S-16C CHECKING ECM MOTOR WINDINGS

1.Disconnect the 5-pin and the 16-pin connectors from the ECM power head.

2.Remove the 2 screws securing the ECM power head and separate it from the motor.

3.Disconnect the 3-pin motor connector from the power head and lay it aside.

4.Using an ohmmeter, check the motor windings for continuity to ground (pins to motor shell). If the ohmme- ter indicates continuity to ground, the motor is defective and must be replaced.

5.Using an ohmmeter, check the windings for continuity (pin to pin). If no continuity is indicated, the thermal limit (over load) device may be open. Allow motor to cool and retest.

3-pin motor connector

16-pin connector

5-pin connector

S-16D ECM CFM ADJUSTMENTS

MBE MOTOR

This section references the operation characteristics of the MBE model motor only. The ECM control board is factory set with the dipswitch #4 in the “ON” position and all other dipswitches are factory set in the “OFF” position. When MBE is used with 2-stage cooling units, dipswitch #4 should be in the "OFF" position.

For most applications, the settings are to be changed according to the electric heat size and the outdoor unit selection.

The MBE product uses a General Electric ECMTM motor. This motor provides many features not available on the traditional PSC motor. These features include:

•Improved Efficiency

•Constant CFM

•Soft Start and Stop

•Improved Humidity Control

MOTOR SPEED ADJUSTMENT

Each ECM™ blower motor has been preprogrammed for operation at 4 distinct airflow levels when operating in Cooling/Heat Pump mode or Electric Heat mode. These 4 distinct levels may also be adjusted slightly lower or higher if desired. The adjustment between levels and the trim adjustments are made by changing the dipswitch(s) either to an "OFF" or "ON" position.

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