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- Mon Aug 22, 2022 11:53 am
- Forum: CPAP and Sleep Apnea Message Board
- Topic: HDM Z1 Have a fault 33 code. Anyone know how to fix it?
- Replies: 63
- Views: 89311
Re: HDM Z1 Have a fault 33 code. Anyone know how to fix it?
I too received the Fault 33 error (and fault 21) on my HdM Z-1 made in 2014. Used only once or twice a year for travel so the total number of in-use hours is extremely low. By disconnecting the power and restarting it runs for a few seconds before the Fault 33 returns. I haven’t tried the above sugg...