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- Sun May 01, 2022 12:59 pm
- Forum: CPAP and Sleep Apnea Message Board
- Topic: HDM Z1 Have a fault 33 code. Anyone know how to fix it?
- Replies: 63
- Views: 94391
Re: HDM Z1 Have a fault 33 code. Anyone know how to fix it?
I have made some progress. Because the motor was hunting, I guessed that the pressure switch was faulty. If i removed the tube, the motor could start and run for a time. I opened the machine and found the pressure switch. As the machine didn't work, I had nothing to lose and poked a soft wire in the...