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- Sat Jan 22, 2022 6:51 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: 92025
Re: HDM Z1 Have a fault 33 code. Anyone know how to fix it?
I also replaceed old BR1225(3V battery with soldering holder) to new CR2032(3V with replaceable holder). After I turned it on and set pressure and date/time, It worked at unstable air flow. Then I turned it off, It displayed FAULT 33 again. I thought unstable air flow is caused by over pressure dete...