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csx4127

Fisher Paykel dd24dctx7 top drawer won’t start

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csx4127

does this unit have a limit switch for the drawers 

when I open the top drawer it never “wakes up” / turns on. 
for a while I could push the drawer to one side to make it start.  
now no go.  

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J5*

The door switch is in the main control board , it’s an infra red light beam that goes out the Rh side through the light tubes on the tub it bounces through a prism in the side of the cabinet and then back into the board 

swap the control boards between the drawers to confirm it’s a board issue 

on the odd occasion I’ve seen enough cockroach crap on the sensors enough to block  the beam

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csx4127

Swapped controller with bottom unit  bottom works top still does not 

it looks to be lined up with the 2 clear plastic circles on the side but still doesn’t wake up when I open door.  And when I press start it beeps a few times but will not run 

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vunger1

There is a receiver piece on the frame , the infrared is emitted through the 2 tubes on controller and then basically reflected back when properly aligned. 

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vunger1

You can remove  the recieve prism from the frame and hold it closer to the door tubes and see if it works. I always start with a prism, they are just a few bucks, then if necessary replace board.

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J5*
2 hours ago, vunger1 said:

You can remove  the recieve prism from the frame and hold it closer to the door tubes and see if it works. I always start with a prism, they are just a few bucks, then if necessary replace board.

Considering I’ve repaired thousands of these units in the last 14 years the only prism I have really had to replace was the one that wasn’t there 

at some time during manufacture many years ago well before phase 7 units they had a defect with the cabinet and would supply a prism with the new module as it was out a couple of mm 

ive also had cabinets where the rivers that hold the cabinet together at the back pop and so the cabinet was twisted so the light beams wouldn’t work , along with units that weren’t level in the first place and have a twisted cabinet

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vunger1
21 minutes ago, J5* said:

Considering I’ve repaired thousands of these units in the last 14 years the only prism I have really had to replace was the one that wasn’t there 

at some time during manufacture many years ago well before phase 7 units they had a defect with the cabinet and would supply a prism with the new module as it was out a couple of mm 

ive also had cabinets where the rivers that hold the cabinet together at the back pop and so the cabinet was twisted so the light beams wouldn’t work , along with units that weren’t level in the first place and have a twisted cabinet

So in your opinion is it usually a board failure? 

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J5*
On 2/21/2020 at 2:37 PM, vunger1 said:

So in your opinion is it usually a board failure? 

Door switch issue is pretty unusual but yes normally board fault

actually did one this week which was intermittent 

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