Glow-worm High Pressure Sensor 0020086304

The Glow-worm high pressure sensor is a monitoring component used on Envirosorb air/water heat pumps. It reads system pressure on the high side of the refrigerant circuit and feeds that signal back to the appliance controls. The sensor allows the heat pump to regulate operation and to shut down safely if pressure moves outside the permitted range.

• The heat pump locks out or shuts down on a high pressure fault
• A pressure-related fault code is displayed and will not clear
• Pressure readings at the controls appear erratic or implausible
• The appliance cuts out during heating or hot water demand and restarts only after a reset
• Reduced or intermittent output from the heat pump alongside pressure fault indications

• Confirm your appliance model against the Envirosorb range listed above
• Check the part number on the existing sensor matches 0020086304
• Note any fault codes shown before ordering so the diagnosis can be confirmed
• Work on the refrigerant circuit should be carried out by a competent heating engineer