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Joule Modul Air fault 95

Water pressure is critically low (< 0.3 bar)

Heat pump

What 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

  1. Low system water pressure
  2. Water leak

Where to start

  1. Check system water pressure gauge
  2. Check water pressure and fan/pump PWM values on Status screen

The full answer, free

  • 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
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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