I would think they are separate.

來源: RomaVacation 於 2024-01-22 10:55:44 [] [舊帖] [給我悄悄話] 閱讀數 : (239 bytes)

Don't short pressure switch unless you are sure it is bad. Some people suck it to test. Google you tube. 

If exhaust can not be vented and you short pressure switch. it could be risk. 

 

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