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amao164

Maytag JAZZ Control Board Information

7 posts in this topic

Hello,

 

My maytag fridge has a defrost problem (freezer cold but fridge is warm). Rather than simply buying a new board ($141.5), I decide to debug the board itself. So far, I know there are two Omron relays that may be relevant.

 

G2RL-1A4-E-CF (16A/24V) SPST for compressor.

G5Q-1A4 (10A/24V) SPST for defrost heater.

 

I know my defrost heater and terminator are good but the heater does not get energized (measuring voltage between white and orange wires of J1 on the Jazz board) when I put the board under forced-defrost mode. Same result when measuring between orange and brown wires. This means no voltage drop across the terminator.

 

My guess is that the defrost relay is dead or the transistor which drives the relay failed but not 100% sure yet. Does anyone have a schematic for the JAZZ board or have a similar experience? Which part was broken on yours?

 

 

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Need appliance parts? Call 877-803-7957 now!

Fridge model number ?

does the Defrost work when using "forced" defrost ?

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Make/Model = Maytag/MFF2558VEM4

JAZZ Board = TH172

                       MA7702278441-TH

                       JAZZ-Rev M

 

When the fridge is in forced defrost mode, the compressor stops but the evaporator wouldn't defrost. I had to use a hair drier to do it manually.

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... My guess is that the defrost relay is dead or the transistor which drives the relay failed

... Does anyone have a schematic for the JAZZ board

1) could be

2) not unless you draw your own ...

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I just replace the boards. With the jazz board, I would do my customers a disservice by repairing them. The boards are readily available, relatively cheap and easy to install.

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anymore i just replace them too .

also in the cases of jazz board failures  it's never a bad relay , i have taken these relay's out and used them in dishwashers , they work fine

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I just replace the boards. With the jazz board, I would do my customers a disservice by repairing them. The boards are readily available, relatively cheap and easy to install.

 

 

Jazz board:  http://www.repairclinic.com/PartDetail/Main-Control-Board/12784415/1541423?modelNumber=MFF2558VEM4

 

Main-Control-Board-12784415-00723729.jpg

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