Reference - LG LFX28978 series Service Manual

10. Reference

10-1 TEST MODE and Removing TPA
1. How to enter the TEST MODE
Push the test button on the Main PCB to enter the TEST MODE.
Main PWB
2. How to remove Terminal Position Assurance (TPA)
<AC TPA>
After measure the values, you should put in the TPA again.
* 1 time : Comp / Damper / All FAN on
(Everything is displayed)
* 2 times : Damper closed
(22 22 displayed)
* 3 times : Forced defrost mode
(33 33 displayed)
<DC TPA>
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