Maytag Ice2O MFI2665XEM Owner's Manual download pdf (Page 7)

Component Testing

WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test

procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.

Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Component Description Test Procedures

Overload / Relay

When voltage is connected and relay is

cool, current passes through relay

to start

winding.

After a short time, current heats the

resistor in relay

and resistance will rise

blocking current flow through relay.

Start winding remains in the circuit through

run capacitor.

Solid state relay plugs directly on

compressor start and run terminals. Relay

terminals 2 and 3 are connected within

relay. Run capacitor is connected to relay

terminal 3. L2 side of 120 VAC power is

connected to relay terminal 2.

1. Disconnect power to the refrigerator.

2. Remove relay cover and disconnect leads.

3. Check resistance across terminals 2 and 3 with an ohmmeter:

Normal = 3 to 12 ohms

Shorted = 0 ohms

Open = infinite ohms

Control board

See “Control Board” section for

troubleshooting information.

Evaporator fan

motor

Evaporator fan moves air across

evaporator coil and throughout refrigerator

cabinet.

1. Use Control board testing to check operation of motor.

2. If fan motor does not operate, check for voltage at motor leads.

3. Replace motor if power is present.

4. Replace Control board if no power.

Ice Box fan motor

Ice Box fan moves air across Ice Maker

and throughout refrigerator cabinet.

1. Use Control board testing to check operation of motor.

2. If fan motor does not operate check for voltage at motor leads.

3. Replace motor if power is present.

4. Replace Control board if no power.

Right Refrigerator

& Freezer light

switch

Single pole, single throw switch completes

circuit for light w

hen door is open.

Check resistant across terminals.

Switch arm depressed

“C“ and ”NC” terminals Open

Switch arm up

“C“ and ”NC” terminals Closed

Ice maker water

valve

Controls water flow to the ice maker.

Controlled by ice maker.

See “Control Board” section for further

testing information.

Check resistance across coil windings.

Evaporator heater

(defrost)

Activated when defrost thermostat control

board completes circuit through heater.

Check resistance across heater.

To check defrost system :

1. Use Control Board testing to check operation of defrost heater.

2. If heater does not operate, check defrost thermostat to see if closed.

3. If no power to heater, replace control board.

Left Refrigerator

Light Switch

Single pole, double throw switch

completes circuit for light when door is

open.

Check resistant across terminals.

Switch arm depressed

“C” and “NC” terminals Open

“C” and ”NO” terminals Closed

Switch arm up

“C” and “NC” terminals Closed

“C” and “NO” terminals Open

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Maytag Ice2O MFI2665XEM Owner's Manual Page 7

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