Testing Motors; Other Component Resistance Chart; Inverter Drive Chart - Maytag MFR Series Service Manual

Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.

TeSTinG MOTORS

MFR18 - 25 motors have 3 motor winding
wires (black, white, brown) and 2 gray wires
(tachometer circuit) – resistance measurement
of the tachometer wires circuit is measured
between the two gray wires and typically
measures 155-190 ohms
Motors used in MFR30 - 80 models are dual
voltage motors and are wired for "low voltage"
(delta configuration) in most 60Hz models
Motor wires connected to inverter drive and
to motor junction box are marked "1", "2" and
"3" in all MFR30 - 80 models. Resistance
measurements are made from "1" to" 2", "2"
to" 3", and from "1" to "3".
Model:
MFR18PDC/PNC
MFR25PDC/PNC
MFR30PDC/PNC
MFR40PDC/PNC
MFR50PDC/PNC
MFR60PDC/PNC
MFR80PDC/PNC
Resistance (in ohms)
6.5 ohms, 6.5 ohms, 6.5 ohms
6.5 ohms, 6.5 ohms, 6.5 ohms
11 ohms, 11 ohms, 11 ohms
6 ohms, 6 ohms, 6 ohms
4.5 ohms, 4.5 ohms, 4.5 ohms
2 ohms, 2 ohms, 2 ohms
1.5 ohms, 1.5 ohms,1.5 ohms
Electrical Shock Hazard
OTHeR COMpOnenT
ReSiSTanCe CHaRT
Component:
Bimetal
Door Lock Coil
Door Unlock Coil
Contactor Coil
Control Board (P1 to
P3 on control board)
Water Valve Coil
Drain Valve

inveRTeR DRive CHaRT

Model
MFR18
MFR25
MFR30
MFR40
MFR50
MFR60
MFR80
7-13
Resistance:
1,800 ohms (1.8K)
7,700 ohms (7.7K)
7,700 ohms (7.7K)
525 ohms
160 ohms
4,600 ohms (4.6K)
120 ohms
Inverter Inverter E500 &
Brand D700 KW Rating
Diehl/AKO 0.4KW
Diehl/AKO 0.4KW
Mitsubishi 0.75KW
Mitsubishi 1.5KW
Mitsubishi 1.5KW
Mitsubishi 2.2KW
Mitsubishi 2.2KW