Climate line tube requires more power for heater than unheated tube.
Could this pull down the voltage enough to cause faults?
Additional internal heating of the machine causing something to break down?
User movement tug on tube causes intermittent power connection and resultant voltage events?
CL tube heater fails intermittently allowing condensate build up with attendant problems.
Condensation on tube temp sensor causes current to ramp up and pull voltage down?
Power supply undersized or faulty?
Excessively dirty house power?
I am open to suggestions. DW has apt with sleepdoc soon so will hold my horses. If they do not resolve the problem then I will start by attaching a temperature/Rh data logger to see what happens at the mask tube connection.
If you have other ideas please add to my list.
Updated: Philips Respironics System One (60 Series)
RemStar BiPAP Auto with Bi-FlexModel 760P -
Rise Time x3 Fixed Bi-Level EPAP 9.0 IPAP 11.5 (cmH2O)