Joule Modul Air fault 95
Water pressure is critically low (< 0.3 bar)
Heat pumpWhat it means
System water pressure has dropped below the critical threshold of 0.3 bar. This code automatically resets when water pressure is increased.
Likely causes
- Low system water pressure
- Water leak
- Water pressure lower than 1 bar indicates system requires topping up
Where to start
- Check system water pressure gauge
- Check water pressure and fan/pump PWM values on Status screen
- Ensure system pressure is correct and system is free from air
The full answer, free
- 4 more checks in order
- The readings and component tests from the manual
- How to put it right, step by step
- The manual page for this fault (page 106), right under the answer
Safety: Isolate the outdoor unit and any backup heater, and give the inverter capacitors time to discharge before you open the electrics. Anything on the refrigerant circuit needs F-gas certification.
From the Joule manual for the Modul Air. Check the model on the data plate before you order parts.
Other Joule Modul Air fault codes
- 12No communication with the room thermostat
- 13No communication with the boiler
- 20Filter reached end of lifespan
- 30Top tank temperature sensor error
- 31Bottom tank temperature sensor error
- 32Back up heater water heater temperature sensor error
- 35Airflow sensor error - green comfort module
- 71Over-temperature flow protection triggered
- 80No temperature difference across the condenser