E23 : High Pressure
To avoid serious injury follow all warnings and instructions in the manual. Wear appropriate personal protective equipment.
Pressure in the hose and pumps will increase as the system heats up. Turn on heat and allow all zones to reach the temperature setpoint before turning on the pumps.
Verify the pressure reading on the display and the analog gauges at the manifold. Replace transducer if they do not match.
The alarm level is lower for E-20 and E-30 than for E-XP1 and E-XP2. Press the Settings key and check setting 9, proportioner type.